WO2024063102A1

WO2024063102A1 - Drawing lamp

Info

Publication number: WO2024063102A1
Application number: PCT/JP2023/034142
Authority: WO
Inventors: 健太郎谷
Original assignee: 株式会社小糸製作所
Priority date: 2022-09-21
Filing date: 2023-09-20
Publication date: 2024-03-28

Abstract

This drawing lamp is configured to shine output light from a first light emitting element (20A) forwardly of the lamp via a projection lens (30), to thereby form a drawing light distribution pattern (PA). A light-blocking plate (40) for blocking some of the light travelling from the first light emitting element (20A) to the projection lens (30) is disposed between the first light emitting element (20A) and the projection lens (30). A first opening portion (40Aa) having a V-shaped opening is formed in the light-blocking plate (40). A first collecting lens (52A) is disposed between the first light emitting element (20A) and the light-blocking plate (40) to collect the output light from the first light emitting element (20A) toward the first opening portion (40Aa). The first collecting lens (52A) is formed to extend in V-shape in an overlapping positional relationship with the first opening portion (40Aa) in a frontal view of the lamp.

Description

drawing lamp

The present disclosure relates to a drawing lamp configured to form a drawing light distribution pattern.

Conventionally, as a drawing lamp for forming a drawing light distribution pattern (i.e., a light distribution pattern for drawing characters, symbols, etc. on the road surface in front of the lamp), light emitted from a light emitting element is transmitted through a projection lens. There are known lamps configured to emit light toward the front of the lamp.

In such a drawing lamp, a light-shielding plate is arranged between the light-emitting element and the projection lens to block a part of the light traveling from the light-emitting element to the projection lens. The drawing light distribution pattern is formed by projecting the aperture shape of the aperture with a projection lens.

Patent Document 1 describes a configuration of a light shielding plate in a vehicle-mounted drawing lamp in which an opening is formed to have a V-shaped opening shape.

Further, Patent Document 2 describes a configuration of a light shielding plate in a vehicle-mounted drawing lamp in which a plurality of openings are formed at a plurality of locations at intervals in the vertical direction.

Furthermore, in the in-vehicle drawing lamp described in Patent Document 3, a light shielding plate is arranged between the light emitting element and the projection lens to block part of the light directed from the light emitting element to the projection lens. By projecting the shape of the opening formed in the light shielding plate using a projection lens, a drawing light distribution pattern is formed on the road surface in front of the lamp.

International Publication No. 2021/140932 International Publication No. 2022/019231 Japanese Patent Application Publication No. 2022-60057

By forming a drawing light distribution pattern using the light emitted from the in-vehicle drawing lamp, it is possible to express the intention of the own vehicle to the surroundings when driving at night, etc., and thereby make it easier for other vehicles to This makes it possible to alert people such as pedestrians and pedestrians.

In this case, if the opening formed in the light-shielding plate is set to have a V-shaped opening shape, as in the drawing lamp described in Patent Document 1, the shape will be an inverted V-shape (i.e., a shape that is pointed toward the front of the lamp). Since the drawing light distribution pattern is formed, it is possible to enhance the effect of calling attention to the surroundings. However, when the opening is formed to have a V-shaped opening in this way, it is not easy to form the entire drawing light distribution pattern with uniform brightness.

On the other hand, as in the drawing lamp described in Patent Document 1, a condenser lens is disposed between the light emitting element and the light shielding plate, and the light emitted from the light emitting element is focused toward the opening. By doing so, it becomes possible to equalize the brightness of the drawing light distribution pattern.

However, in the drawing lamp described in Patent Document 1, a condenser lens is used to condense the light emitted from the light emitting element toward an aperture formed in a V-shaped aperture shape. There is no choice but to make it larger.

A first object of the present disclosure is to provide a drawing lamp configured to form a drawing light distribution pattern, which can efficiently form an inverted V-shaped drawing light distribution pattern. That's true.

If the drawing lamp described in Patent Document 2 has a configuration in which a plurality of openings are formed in the light shielding plate at intervals in the vertical direction, the drawing light distribution pattern is arranged in series toward the front of the lamp. Since they are formed side by side, it is possible to increase the effect of calling attention to the surroundings.

However, when such a configuration is adopted, the vertical width of the portion of the light shielding plate located between the openings becomes narrower, and its rigidity tends to decrease, making it difficult to maintain the desired opening shape. Therefore, it becomes difficult to form a plurality of drawing light distribution patterns in series in close proximity to each other.

A second object of the present disclosure is to provide a drawing lamp configured to form a drawing light distribution pattern, which is capable of forming a plurality of drawing light distribution patterns in series in close proximity to each other. The goal is to provide the following.

If the drawing lamp described in Patent Document 1 has a configuration in which a condenser lens is disposed between a light emitting element and a light shielding plate, the light emitted from the light emitting element can be made to efficiently enter the projection lens. becomes possible.

However, even in the case of a configuration including such a condensing lens, it is not always easy to efficiently make the emitted light from the light emitting element enter the opening formed in the light shielding plate. Therefore, it is not easy to efficiently form a drawing light distribution pattern.

Such a problem can similarly occur in drawing lamps other than those for vehicle use.

A third object of the present disclosure is to provide a drawing lamp configured to form a drawing light distribution pattern that can efficiently form a drawing light distribution pattern.

The drawing lamp according to the first aspect of the present disclosure includes:
In a drawing lamp configured to form a drawing light distribution pattern by irradiating light emitted from a light emitting element toward the front of the lamp through a projection lens,
A light-shielding plate is disposed between the light-emitting element and the projection lens to block a part of the light directed from the light-emitting element to the projection lens,
The light shielding plate has an opening formed in a V-shaped opening shape,
A condensing lens for condensing light emitted from the light emitting element toward the opening is disposed between the light emitting element and the light shielding plate,
The condensing lens is formed to extend in a V-shape so as to overlap the opening when viewed from the front of the lamp.

The drawing lamp according to the second aspect of the present disclosure includes:
In a drawing lamp configured to form a drawing light distribution pattern by irradiating light emitted from a light emitting element toward the front of the lamp through a projection lens,
A light-shielding plate is disposed between the light-emitting element and the projection lens to block a part of the light directed from the light-emitting element to the projection lens,
The projection lens has a configuration in which the first and second projection lens portions are arranged side by side in a required direction intersecting the front-rear direction of the lamp,
A plurality of openings are formed in the light shielding plate,
The light shielding plate includes, as the plurality of openings, a plurality of first openings arranged at intervals in a direction intersecting the required direction on the rear side of the lamp of the first projection lens section, and a plurality of first openings arranged at intervals in a direction intersecting the required direction. and at least one second opening disposed on the rear side of the lamp of the lens part,
The light emitting element includes a first light emitting element disposed on the rear side of the lamp of the plurality of first openings, and a second light emitting element disposed on the rear side of the lamp of the at least one second opening. Ori,
each of the plurality of first drawing light distribution patterns formed by the light emitted from the first light emitting element that enters the first projection lens section through the plurality of first openings; Each of the at least one second drawing light distribution pattern formed by the light emitted from the second light emitting element that enters the second projection lens part through the second opening is arranged alternately in series. The arrangement of the first projection lens section and the plurality of first openings and the arrangement of the second projection lens section and the at least one second opening are set so that

A drawing lamp according to a third aspect of the present disclosure includes:
In a drawing lamp configured to form a drawing light distribution pattern by irradiating light emitted from a light emitting element toward the front of the lamp through a projection lens,
A light-shielding plate is disposed between the light-emitting element and the projection lens to block a part of the light directed from the light-emitting element to the projection lens,
The light shielding plate includes a main body in which an opening is formed for allowing light emitted from the light emitting element to enter the projection lens, and a cylindrical shape extending from the main body toward the rear of the lamp so as to surround the opening. It is equipped with a cylindrical part,
The inner circumferential surface of the cylindrical portion is formed as a reflective surface whose cross-sectional shape becomes smaller toward the rear of the lamp,
The light emitting element is arranged to be located behind the lamp of the cylindrical part.

The drawing lamp according to the first aspect of the present disclosure is configured to form a drawing light distribution pattern by irradiating the light emitted from the light emitting element toward the front of the lamp via a projection lens. A light-shielding plate is arranged between the light-emitting element and the projection lens to block part of the light traveling from the light-emitting element to the projection lens. Since this light-shielding plate has an aperture formed to have a V-shaped aperture shape, an inverted V-shaped drawing light distribution pattern is formed as an inverted projection image of the aperture. It is possible to increase the effect of calling attention to.

Moreover, a condenser lens is arranged between the light emitting element and the light shielding plate to condense the light emitted from the light emitting element toward the opening. Further, the condenser lens is formed to extend in a V-shape so as to overlap the opening when viewed from the front of the lamp. Therefore, the light emitted from the light emitting element can be efficiently incident on the aperture without increasing the size of the condensing lens, so the entire light distribution pattern for drawing can be formed with approximately uniform brightness. .

As described above, according to the present disclosure, in a drawing lamp configured to form a drawing light distribution pattern, an inverted V-shaped drawing light distribution pattern can be efficiently formed.

A drawing lamp according to a second aspect of the present disclosure is configured to form a drawing light distribution pattern by irradiating light emitted from a light emitting element toward the front of the lamp through a light shielding plate and a projection lens. ing. The projection lens is arranged such that the first and second projection lens parts are lined up in a required direction intersecting the front-rear direction of the lamp. A plurality of first openings are formed at intervals in a direction intersecting a desired direction on the rear side of the lamp of the first projection lens section in the light shielding plate. At least one second opening is formed on the rear side of the lamp in the second projection lens section. Furthermore, a first light emitting element is arranged on the rear side of the lamp in the first opening, and a second light emitting element is arranged on the rear side of the lamp in at least one second opening.

Therefore, by the light emitted from the first light emitting element that enters the first projection lens section through the plurality of first openings, the plurality of first drawing light distribution patterns are created as inverted projection images of the plurality of first openings. can be formed. Further, the light emitted from the second light emitting element that enters the second projection lens section through the at least one second opening allows the at least one second drawing arrangement to be displayed as an inverted projection image of the at least one second opening. Light patterns can be formed. This allows other vehicles, pedestrians, etc. to be alerted.

Further, the first projection lens section and the plurality of first apertures are arranged such that each of the plurality of first drawing light distribution patterns and each of the at least one second drawing light distribution pattern are alternately formed in a series arrangement. The arrangement of the parts and the arrangement of the second projection lens part and the at least one second opening are set.

For this reason, the plurality of first openings are formed on the rear side of the lamp of the first projection lens part, and at least one second opening is formed on the rear side of the lamp of the second projection lens part. Therefore, there is no need to make the intervals between the plurality of first openings and the intervals between at least one second opening extremely narrow.

Therefore, even if the light shielding plate is provided, the rigidity of the portion located between the plurality of first openings and the portion located between at least one second opening is unlikely to decrease. Thereby, a plurality of drawing light distribution patterns can be formed in series in close proximity to each other.

According to the present disclosure, in a drawing lighting fixture configured to form a drawing light distribution pattern, multiple drawing light distribution patterns can be formed in series and close to each other. This makes it possible to form a drawing light distribution pattern that has excellent functionality for calling attention to the surroundings.

The drawing lamp according to the third aspect of the present disclosure creates a drawing light distribution pattern as an inverted projection image of the opening by making the light emitted from the light emitting element enter the projection lens through the opening of the light shielding plate. can be formed.

Furthermore, the light shielding plate is formed with a cylindrical part that protrudes toward the rear of the lamp so as to surround the opening formed in the main body of the light shielding plate. Since the inner circumferential surface of the cylindrical portion is formed as a reflective surface, the light emitted from the light emitting element can be guided to the opening directly or after being reflected on the inner circumferential surface. Since the inner peripheral surface of the cylindrical part is formed so that the cross-sectional shape becomes smaller toward the rear of the lamp, it is possible to efficiently guide the emitted light from the light emitting element to the opening and then input it into the projection lens. can. As a result, the light distribution pattern for drawing can be efficiently formed.

As described above, according to the present disclosure, a drawing light distribution pattern can be efficiently formed in a drawing lamp configured to form a drawing light distribution pattern. This can enhance the effect of alerting the surroundings.

FIG. 1 is a front view showing a drawing lamp according to a first embodiment of the present disclosure. FIG. 2 is a plan view showing the drawing lamp according to the first embodiment of the present disclosure. FIG. 3 is a side view showing the drawing lamp according to the first embodiment of the present disclosure. FIG. 4 is an exploded perspective view of the main components of the drawing lamp according to the first embodiment of the present disclosure. FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a side view showing a state in which the drawing lamp according to the first embodiment is mounted on a vehicle. FIG. 9 is a plan view showing the drawing lamp according to the first embodiment mounted on a vehicle. FIG. 10 is a front view showing a drawing lamp according to a first modification of the first embodiment. FIG. 11 is a front view showing a drawing lamp according to a second modification of the first embodiment. FIG. 12 is a sectional view taken along line XII-XII in FIG. 11. FIG. 13 is a front view showing a drawing lamp according to a third modification of the first embodiment. FIG. 14 is a front view showing a drawing lamp according to a second embodiment of the present disclosure. FIG. 15 is a plan view showing a drawing lamp according to the second embodiment. FIG. 16 is a side view showing a drawing lamp according to the second embodiment. FIG. 17 is an exploded perspective view of the main components of the drawing lamp according to the second embodiment. FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. 14. FIG. 19 is a cross-sectional view taken along line XIX-XIX in FIG. 14. FIG. 20 is a side view showing the drawing lamp according to the first embodiment mounted on a vehicle. FIG. 21 is a plan view showing the drawing lamp according to the first embodiment mounted on a vehicle. FIG. 22A is a front view of a drawing lamp according to the second embodiment. FIG. 22B is a front view of a drawing lamp according to a comparative example. FIG. 23 is a front view showing a main part of a drawing lamp according to a first modified example of the second embodiment. FIG. 24A is a cross-sectional view taken along line XXIVa-XXIVa in FIG. 23. FIG. 24B is a cross-sectional view taken along line XXIVb-XXIVb in FIG. 23. FIG. 25A is a sectional view of a drawing lamp according to a second modification of the second embodiment. FIG. 25B is a sectional view of a drawing lamp according to a second modification of the second embodiment. FIG. 26 is a front view showing a drawing lamp according to a third embodiment of the present disclosure. FIG. 27 is a cross-sectional view taken along line XXVII-XXVII in FIG. 26. FIG. 28 is a cross-sectional view taken along line XXVIII-XXVIII in FIG. 26. FIG. 29 is an exploded perspective view of the main components of the drawing lamp according to the third embodiment. FIG. 30 is a side view showing the drawing lamp according to the third embodiment mounted on a vehicle. FIG. 31 is a plan view showing the drawing lamp according to the third embodiment mounted on a vehicle. FIG. 32 is a front view of a drawing lamp according to a modification of the third embodiment. FIG. 33 is a sectional view of a drawing lamp according to a modification of the third embodiment.

(First embodiment)
Hereinafter, a drawing lamp according to a first embodiment of the present disclosure will be described using the drawings.

FIG. 1 is a front view showing a drawing lamp 10 according to a first embodiment of the present disclosure. Further, FIG. 2 is a plan view showing the drawing lamp 10 according to the first embodiment. FIG. 3 is a side view showing the drawing lamp 10 according to the first embodiment. FIG. 4 is an exploded perspective view showing the drawing lamp 10 according to the first embodiment broken down into main components.

In Figures 1 to 4, the direction indicated by The direction is "upward". The same applies to figures other than FIGS. 1 to 4.

Before explaining the specific configuration of the drawing lamp 10 according to this embodiment, its outline will be explained.

FIG. 8 is a side view showing the drawing lamp 10 mounted on the vehicle 100. FIG. 9 is a plan view showing a state in which the drawing lamp 10 is mounted on the vehicle 100. Note that FIG. 9 shows a state in which the drawing lamp 10 on the left side is lit.

As shown in FIGS. 8 and 9, the drawing lamp 10 is mounted on the front end of the vehicle 100 on the vehicle width direction side, and emits light diagonally downward toward the outside in the vehicle width direction. It is configured as follows. The drawing lamp 10 is turned on in synchronization with the lighting of a front turn signal lamp (not shown). Thereby, the drawing lamp 10 is configured to form a drawing light distribution pattern PA on the road surface 2 in front of the vehicle.

As shown in FIGS. 8 and 9, when the drawing lamp 10 is mounted on the vehicle 100, the front of the lamp is oriented diagonally downward with respect to the longitudinal direction of the vehicle. . However, as shown in FIGS. 1 to 4, when the drawing lamp 10 is a single item, the front of the lamp is configured to face in the horizontal direction.

Next, the specific configuration of the drawing lamp 10 will be explained.

FIG. 5 is a cross-sectional view taken along line VV in FIG. 1. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG.

As shown in FIGS. 5 to 7, the drawing lamp 10 is configured to emit light emitted from a light emitting element toward the front of the lamp through a projection lens 30. The drawing lamp 10 includes three light emitting elements: a first light emitting element 20A, a second light emitting element 20B, and a third light emitting element 20C.

The projection lens 30 has a structure in which three first projection lens parts 32A, second projection lens parts 32B, and third projection lens parts 32C are integrally formed in a state in which they are lined up in the left-right direction. At this time, the first projection lens section 32A, the second projection lens section 32B, and the third projection lens section 32C are arranged so that their respective optical axes Axa, Axb, and Axc extend in the front-rear direction of the lamp at the same height position. is formed.

The first projection lens section 32A located on the right side (left side when looking at the lamp from the front) is a projection lens section for long-distance drawing. The second projection lens section 32B located in the center is a projection lens section for close-up drawing. The second projection lens section 32B located on the left side is a projection lens section for close-up drawing.

The first projection lens section 32A, the second projection lens section 32B, and the third projection lens section 32C are plano-convex lenses whose respective front surfaces 32Aa, 32Ba, and 32Ca are constituted by convex curved surfaces, and have a rectangular outer shape when viewed from the front of the lamp. It has a shape. The first projection lens section 32A to the third projection lens section 32C are integrally formed with their effective lens surfaces (that is, front surfaces 32Aa to 32Ca that perform lens functions) adjacent to each other.

Specifically, the first projection lens section 32A to the third projection lens section 32C are formed with the same vertical width, but the horizontal width of the first projection lens section 32A is the same as that of the second projection lens section 32B and the third projection lens section 32C. It is configured to be larger than each of the projection lens sections 32C. That is, the first projection lens section 32A has a substantially square external shape when viewed from the front of the lamp, whereas each of the second projection lens section 32B and the third projection lens section 32C has an elongated rectangular shape when viewed from the front of the lamp. It has an external shape.

The first projection lens section 32A to the third projection lens section 32C are disposed in this order in a stepped manner displaced toward the rear side of the lamp. At that time, the first projection lens section 32A to the third projection lens section 32C are arranged at respective focal points Fa, Fb, and Fc on the rear side of the first projection lens section 32A, the second projection lens section 32B, and the third projection lens section 32C. are configured to be at the same position in the longitudinal direction of the lamp.

The first projection lens section 32A to the third projection lens section 32C are surrounded by an outer peripheral flange section 34 formed to extend in a stepped manner along the rear surface of each section. A pair of mounting flange sections 36 are formed on both the left and right sides of the outer peripheral flange section 34. The pair of left and right mounting flange sections 36 have L-shaped horizontal cross sections with different lengths in the fore-aft direction of the lamp. The rear end faces of the pair of left and right mounting flange sections 36 are formed to be located on the same plane perpendicular to the fore-aft direction of the lamp.

The first light emitting element 20A to the third light emitting element 20C are all white light emitting diodes and have a rectangular (specifically square) light emitting surface 20a.

The first light emitting element 20A to the third light emitting element 20C are mounted on the common substrate 22 in a state where they are arranged on the rear side of the lamp of the first projection lens part 32A to the third projection lens part 32C, respectively. The substrate 22 is supported by the heat sink 60 and is arranged so as to extend along a plane perpendicular to the front-rear direction of the lamp.

Between the first light emitting element 20A to third light emitting element 20C and the first projection lens part 32A to third projection lens part 32C, the first to third light emitting elements 20A to 20C are connected to the first projection lens part 32A to A light shielding plate 40 is arranged to shield a portion of the light directed toward the third projection lens section 32C. The light shielding plate 40 is composed of a thin plate extending along a plane orthogonal to the front-rear direction of the lamp.

The light shielding plate 40 is positioned such that its left and right ends are in contact with the pair of left and right mounting flanges 36 of the projection lens 30 from the rear side of the lamp. Thereby, the light shielding plate 40 is arranged along a vertical plane including the rear focal points Fa to Fc of the first to third projection lens sections 32A to 32C.

The first projection lens section 32A, second projection lens section 32B, and third projection lens section 32C in the light shielding plate 40 have a first opening 40Aa, a second opening 40Ba, and a third opening 40Ca at the rear side of the lamp. is formed.

The first opening 40Aa to the third opening 40Ca are all formed to have a V-shaped opening when viewed from the front of the lamp. At this time, the opening angle of the V-shape in the first opening 40Aa to the third opening 40Ca is about 90 to 150° (for example, about 120°).

Among the first opening 40Aa to the third opening 40Ca, the second opening 40Ba is located higher than the first opening 40Aa, and the third opening 40Ca is located higher than the second opening 40Ba. is located on the upper side.

Specifically, the first opening 40Aa is formed such that the lower end position of the central portion of the upper inner peripheral edge of the first opening 40Aa is located below the optical axis Axa of the first projection lens section 32A. There is. The second opening 40Ba is formed such that the lower end position of the central portion of the upper inner peripheral edge of the second opening 40Ba is located on the optical axis Axb of the second projection lens section 32B. The third opening 40Ca is formed such that the lower end position of the central portion of the upper inner peripheral edge of the third opening 40Ca is located above the optical axis Axc of the third projection lens section 32C. The amount of upward displacement Dc from the optical axis Axc of the lower end position of the central part on the upper inner peripheral edge of the third opening 40Ca is the upward displacement amount Dc from the optical axis Axa of the lower end position of the central part on the upper inner peripheral edge of the first opening 40Aa. It is set to a larger value (for example, about twice the value) than the downward displacement amount Da.

Among the first opening 40Aa to the third opening 40Ca, the second opening 40Ba has a larger vertical width than the first opening 40Aa, and the third opening 40Ba has a larger vertical width than the second opening 40Ba. 40Ca is formed with a larger vertical width.

Furthermore, the inner circumferential edges on both the left and right sides of the first opening 40Aa to the third opening 40Ca extend upward in a direction that slightly expands with respect to the vertical direction. The second opening 40Ba has a slightly larger horizontal width than the first opening 40Aa. Further, the third opening 40Ca is formed to have a slightly larger horizontal width than the second opening 40Ba.

The first light-emitting element 20A is disposed below the optical axis Axa of the first projection lens unit 32A. The second light-emitting element 20B is disposed on the optical axis Axb of the second projection lens unit 32B. The third light-emitting element 20C is disposed above the optical axis Axc of the third projection lens unit 32C.

Specifically, the first light emitting element 20A, the second light emitting element 20B, and the third light emitting element 20C have their light emission centers located on the first reference axis La, the second reference axis Lb, and the third reference axis Lc, respectively. It is arranged so that The first reference axis La, the second reference axis Lb, and the third reference axis Lc are at the center of the upper inner peripheral edge of the first opening 40Aa, the second opening 40Ba, and the third opening 40Ca of the light shielding plate 40, respectively. It extends in the front-rear direction of the lamp so as to pass through the lower end position.

The first light emitting element 20A to the third light emitting element 20C are connected to an electronic control unit (not shown), and are configured so that the electronic control unit performs lighting/extinguishing control according to vehicle running conditions and the like.

A condensing lens assembly 50 is arranged between the substrate 22 and the light shielding plate 40.

The condenser lens assembly 50 is integrally formed with a first condenser lens 52A, a second condenser lens 52B, and a third condenser lens 52C, which are arranged in the left-right direction, via a plate-shaped portion. . The first condensing lens 52A, the second condensing lens 52B, and the third condensing lens 52C are arranged so as to be located on the first reference axis La, the second reference axis Lb, and the third reference axis Lc, respectively. .

The first condenser lens 52A, the second condenser lens 52B, and the third condenser lens 52C overlap with the first aperture 40Aa, the second aperture 40Ba, and the third aperture 40Ca of the light shielding plate 40, respectively, when viewed from the front of the lamp. It is formed so as to extend in a V-shape in a positional relationship.

Specifically, the first condensing lens 52A is formed to surround the first opening 40Aa all around the first opening 40Aa with a vertical width larger than the first opening 40Aa, and has a substantially heart-shaped outer shape. ing. Further, the second condenser lens 52B is formed to surround the second aperture 40Ba all around the second aperture 40Ba with a vertical width larger than that of the second aperture 40Ba, and has an approximately heart-shaped shape that is one size larger than the first condenser lens 52A. It has an external shape of a shape. Furthermore, the third condensing lens 52C is formed to surround the third opening 40Ca all around the third opening 40Ca with a vertical width larger than that of the third opening 40Ca, and has a substantially heart shape that is one size larger than the second opening 40Ba. It has an external shape.

The rear surfaces 52Ab, 52Bb, and 52Cb of the first condenser lens 52A, the second condenser lens 52B, and the third condenser lens 52C are formed into convex curved surfaces. In the first condenser lens 52A, the second condenser lens 52B, and the third condenser lens 52C, the respective front surfaces 52Aa, 52Ba, and 52Ca are formed in a convex curved shape with a smaller curvature than the respective rear surfaces 52Ab, 52Bb, and 52Cb. ing.

As a result, the first condenser lens 52A to the third condenser lens 52C direct the incident light emitted from the first light emitting element 20A to the third light emitting element 20C to the first aperture 40Aa to the third aperture 40Ca, respectively. The light beam is configured to be emitted toward the light shielding plate 40 as light that converges in the direction.

The condensing lens assembly 50 has a configuration in which a pair of mounting flanges 54 are formed on both left and right sides of a plate-shaped portion located around the first to third condensing lenses 52A to 52C. The pair of left and right mounting flange portions 54 have an L-shaped horizontal cross-sectional shape. The front end surface of the mounting flange portion 54 contacts both left and right end portions of the light shielding plate 40 from the rear side of the lamp, so that the first to third condensing lenses 52A to 52C are aligned from the first reference axis La to the third It is positioned on the reference axis Lc.

The heat sink 60 includes a main body 62 extending along a plane perpendicular to the front-rear direction of the lamp, a plurality of radiation fins 64 extending along a vertical plane from the main body 62 toward the rear of the lamp, and left and right sides of the main body 62. A pair of mounting flange portions 66 are formed.

The board 22 is in surface contact with the main body 62 of the heat sink 60, and is positioned and supported by tightening screws 72 at two diagonal locations.

Further, the projection lens 30, the light shielding plate 40, and the condensing lens assembly 50 are positioned by tightening screws 74 at two diagonal locations on the pair of left and right mounting flanges 66 of the heat sink 60. Supported. The screw tightening is performed by connecting the pair of left and right mounting flanges 36 of the projection lens 30, both left and right ends of the light shielding plate 40, and the pair of left and right mounting flanges 54 of the condensing lens assembly 50 to the pair of left and right mounting flanges of the heat sink 60. This is done by co-tightening with the parts 66 superimposed on each other. Note that positioning pins 36a are formed on the pair of left and right mounting flanges 36 of the projection lens 30, respectively. On the other hand, pin insertion holes 40a into which the positioning pins 36a are inserted are provided at both left and right ends of the light shielding plate 40, a pair of left and right mounting flanges 54 of the condenser lens assembly 50, and a pair of left and right mounting flanges 66 of the heat sink 60; 54a and 66a are formed, respectively.

Next, the drawing light distribution pattern PA shown in FIGS. 8 and 9 will be described.

As described above, the drawing light distribution pattern PA is formed by the irradiation light from the drawing lamp 10. The drawing light distribution pattern PA is composed of three drawing light distribution patterns PAa, PAb, and PAc, as shown in FIGS. 8 and 9.

The three drawing light distribution patterns PAa, PAb, and PAc are all light distribution patterns in an inverted V shape (that is, a shape pointed toward the front of the lamp). The three drawing light distribution patterns PAa, PAb, and PAc have approximately the same size and are arranged in series at approximately equal intervals.

The drawing light distribution pattern PAa formed in a long distance area of the road surface 2 in front of the vehicle is created by emitting light from the first light emitting element 20A toward the front of the lamp via the first projection lens section 32A. This is the light distribution pattern formed by this.

The drawing light distribution pattern PAa is formed as an inverted projection image of the first opening 40Aa formed in the light shielding plate 40 so as to have a V-shaped opening shape.

The first opening 40Aa is located such that the lower end position of the central part of the upper inner peripheral edge of the first opening 40Aa is below the optical axis Axa of the first projection lens section 32A. The light distribution pattern PAa is emitted toward the front of the lamp as light directed upward from the optical axis Axa. Thereby, the drawing light distribution pattern PAa is formed in a long distance area.

Further, the light emitted from the first light emitting element 20A efficiently enters the first opening 40Aa by the first condenser lens 52A formed so as to surround the first opening 40Aa in a V-shape over the entire circumference. Therefore, the drawing light distribution pattern PAa is formed with sufficient and substantially uniform brightness. Moreover, the first light emitting element 20A and the first condensing lens 52A are arranged on the first reference axis La passing through the lower end position of the central part of the upper inner peripheral edge of the first opening 40Aa. Sufficient brightness of the light pattern PAa is ensured.

The drawing light distribution pattern PAb formed in a short distance area of the road surface 2 in front of the vehicle is created by emitting light from the second light emitting element 20B toward the front of the lamp via the second projection lens section 32B. This is a light distribution pattern formed by

The drawing light distribution pattern PAb is formed as an inverted projection image of the second opening 40Ba, which is formed to have a V-shaped opening shape in the light shielding plate 40.

The lower end of the central portion of the upper inner peripheral edge of the second opening 40Ba is located on the optical axis Axb of the second projection lens portion 32B. Therefore, the drawing light distribution pattern PAb is emitted toward the front of the lamp as light substantially parallel to the optical axis Axb. Thereby, the drawing light distribution pattern PAb is formed in the short distance area.

Further, the light emitted from the second light emitting element 20B efficiently enters the second opening 40Ba by the second condensing lens 52B formed so as to surround the second opening 40Ba in a V-shape all around. Therefore, the drawing light distribution pattern PAb is formed with sufficient and substantially uniform brightness. Moreover, the second light emitting element 20B and the second condensing lens 52B are arranged on the second reference axis Lb passing through the lower end position of the central part of the upper inner peripheral edge of the second opening 40Ba. Sufficient brightness of the light pattern PAb is ensured.

The drawing light distribution pattern PAc formed in a close range area of the road surface 2 in front of the vehicle is created by emitting light from the third light emitting element 20C toward the front of the lamp via the third projection lens section 32C. This is a light distribution pattern formed by

This drawing light distribution pattern PAc is formed as an inverted projection image of the third opening 40Ca formed in the light shielding plate 40 so as to have a V-shaped opening shape.

The lower end of the central portion of the upper inner peripheral edge of the third opening 40Ca is located above the optical axis Axc of the third projection lens section 32C. Therefore, the drawing light distribution pattern PAc is emitted toward the front of the lamp as light directed downward from the optical axis Axc of the third projection lens section 32C. Thereby, the drawing light distribution pattern PAc is formed in a close range area.

Furthermore, the light emitted from the third light emitting element 20C efficiently enters the third opening 40Ca by the second condenser lens 52B formed so as to surround the third opening 40Ca in a V-shape. Therefore, the drawing light distribution pattern PAc is formed with sufficient brightness and substantially uniform brightness. Moreover, the third light emitting element 20C and the second condensing lens 52B are arranged on the third reference axis Lc passing through the lower end position of the central part of the upper inner peripheral edge of the third opening 40Ca. Sufficient brightness of the light pattern PAc is ensured.

The upward displacement amount Dc of the third opening 40Ca from the optical axis Axc is set to a larger value than the downward displacement amount Da of the first opening 40Aa from the optical axis Axa. Therefore, although the irradiation angles of the light emitted from the first projection lens section 32A to the third projection lens section 32C with respect to the road surface 2 in front of the vehicle are different, the light distribution pattern for drawing PAb and the light distribution pattern for drawing The distance from PAc is approximately the same as that between the drawing light distribution pattern PAa and the drawing light distribution pattern PAb.

The three drawing light distribution patterns PAa to PAc are formed with approximately the same size. This is because the vertical widths of the first opening 40Aa to the third opening 40Ca increase in this order, and the inner peripheral edges on both left and right sides of the openings expand slightly in the vertical direction. This is due to the fact that the opening 40A is elongated, and the left and right widths also become somewhat larger in the order of the first opening 40Aa to the third opening 40Ca.

Next, the operation of this embodiment will be explained.

The drawing lamp 10 according to the present embodiment has a drawing light distribution pattern PAa to Configured to form a PAc. The projection lens 30 has a first projection lens section 32A for long-distance drawing, a second projection lens section 32B for short-distance drawing, and a third projection lens section 32C for close-range drawing in the left-right direction (intersecting the front-rear direction of the lamp). The configuration is such that they are arranged in a line in the required direction. The light shielding plate 40 disposed between the first light emitting element 20A to the third light emitting element 20C and the projection lens 30 includes a portion on the rear side of the lamp of the first projection lens section 32A to third projection lens section 32C. A first opening 40Aa to a third opening 40Ca are formed to have a V-shaped opening shape. Therefore, the light emitted from the first light emitting element 20A to the third light emitting element 20C and passing through the first opening 40Aa to the third opening 40Ca forms an inverted V-shaped drawing light distribution pattern PAa to PAc as an inverted projection image. Form in 3 places near and far. This can increase the effect of alerting the surroundings.

Moreover, between the first light emitting element 20A to the third light emitting element 20C and the light shielding plate 40, the emitted light from the first light emitting element 20A to the third light emitting element 20C is transmitted to the first opening 40Aa to the third opening. A first condenser lens 52A to a third condenser lens 52C are arranged to condense light toward the portion 40Ca. The first condenser lens 52A to the third condenser lens 52C are all formed to extend in a V-shape so as to overlap with the first aperture 40Aa to the third aperture 40Ca when viewed from the front of the lamp. Therefore, there is no need to increase the size of each of the first condenser lens 52A to third condenser lens 52C, and the light emitted from the first light emitting element 20A to third light emitting element 20C is The light can be efficiently incident on the opening 40Ca. As a result, all of the drawing light distribution patterns PAa to PAc can be formed with substantially uniform brightness.

In this way, according to this embodiment, in the drawing lamp 10 configured to form the drawing light distribution pattern PA, the three inverted V-shaped drawing light distribution patterns PAa to Pac that make up the drawing light distribution pattern PA can be efficiently formed.

Moreover, as in this embodiment, the first to third projection lens parts 32A to 32C are integrally formed with their effective lens surfaces adjacent to each other. Thereby, the projection lens 30 can be seen as one unified lens, and the design of the first to third projection lens parts 32A to 32C can be improved.

Furthermore, in the projection lens 30 of this embodiment, the first projection lens section 32A is formed in a larger size than the second projection lens section 32B and the third projection lens section 32C. Therefore, the light distribution pattern for drawing PAa formed in the far-distance area is approximately as clear as the light distribution pattern for drawing PAb formed in the near-distance area and the light distribution pattern for drawing PAc formed in the close-distance area. formed by degree and brightness. Thereby, the function of calling attention to the surroundings by forming the drawing light distribution pattern PA can be enhanced.

In this embodiment, the first opening 40Aa to the third opening 40Ca, which are formed to have a V-shaped opening shape, are all formed with a constant vertical width. However, other opening shapes may be adopted as long as the lower inner peripheral edges of the first opening 40Aa to the third opening 40Ca extend in a V-shape. For example, the first opening 40Aa to the third opening 40Ca are formed such that the vertical width of the first opening 40Aa to the third opening 40Ca gradually narrows from the center position in the left-right direction toward both end positions. It may have an opening shape. Further, the first opening 40Aa to the third opening 40Ca may have an asymmetrical opening shape, an opening shape shaped like a downward arrow, or the like. Even when these opening shapes are adopted, it is possible to form the drawing light distribution patterns PAa to PAc as an inverted V-shaped light distribution pattern (that is, a shape pointed toward the front of the lamp).

In this embodiment, the first projection lens unit 32A to the third projection lens unit 32C are formed so that their optical axes Axa to Axc all extend in the front-to-rear direction of the lamp at the same height position. However, the first projection lens unit 32A to the third projection lens unit 32C may have other configurations. For example, the first projection lens unit 32A to the third projection lens unit 32C may be formed so that the optical axis Axa of the first projection lens unit 32A extends upward more than the optical axis Axb of the second projection lens unit 32B, and the optical axis Axc of the third projection lens unit 32C extends downward more than the optical axis Axb of the second projection lens unit 32B.

In this embodiment, the first to third light emitting elements 20A to 20C emit light in white, but other colors (for example, amber, red, etc.) may be used.

In this embodiment, the drawing lamp 10 is mounted on the vehicle width direction side end at the front end of the vehicle 100, but it may also be mounted on the rear end or side of the vehicle 100, etc.

In this embodiment, the drawing light distribution pattern PA is formed on the road surface 2 in front of the vehicle by the irradiation light from the drawing lamp 10, but the drawing light distribution pattern PA is formed on the road surface 2 in front of the vehicle. A drawing light distribution pattern may be formed on a wall surface or the like.

Next, a modification of this embodiment will be described.

First, a first modification of the first embodiment will be described.

FIG. 10 is a front view showing a drawing lamp according to a first modification of the first embodiment.

The basic configuration of the first modification is the same as that of the first embodiment, but the arrangement of the first light emitting element 120A is different from the first embodiment.

Specifically, the first light emitting element 120A of the first modification is arranged in a state rotated by 45 degrees around the first reference axis La of the first light emitting element 20A of the first embodiment. That is, like the first light emitting element 20A of the first embodiment, the first light emitting element 120A has a rectangular (specifically square) light emitting surface 120a, but the light emitting surface 120a is The vertices are arranged in a diamond shape with the vertices facing up, down, left and right.

Note that also in this modification, the configurations of the first projection lens section 32A, the first opening 40Aa of the light shielding plate 40, and the first condensing lens 52A, and the optical axis Axa and the first reference axis La of the first projection lens section 32A are changed. The positional relationship is the same as in the first embodiment.

By adopting the configuration of this modified example, the following effects can be obtained.

The first light emitting element 120A is arranged so that its light emitting surface 120a appears to be a diamond shape with the apex facing in the vertical and horizontal directions when the lamp is viewed from the front. Thereby, the light emitted from the first light emitting element 120A that has entered the first condensing lens 52A can be made to enter the first opening 40Aa, which is formed to have a V-shaped opening, more efficiently. .

Note that the same configuration as this modification may be applied to the second light emitting element 20B and the third light emitting element 20C of the first embodiment.

In addition, when the first opening 40Aa is configured such that the included angle of the V-shape constituting the opening shape of the first opening 40Aa is close to 90°, the configuration of this modification example is It is particularly effective if the system is adopted.

Next, a second modification of the first embodiment will be described.

FIG. 11 is a front view showing a drawing lamp according to a second modification of the first embodiment.

The basic configuration of the second modification is the same as that of the first embodiment, but the number and arrangement of the first light emitting elements 220A are different from the first embodiment.

In this modification, the first light emitting elements 220A are arranged in three locations in a V-shaped arrangement.

Three first light emitting elements 220A having the same configuration as the first light emitting element 20A of the first embodiment are arranged so as to be located at the center and both ends of the first opening 40Aa of the light shielding plate 40 in the left and right direction. ing. At this time, the first light emitting element 220A, which is disposed at the center in the left-right direction among the three first light emitting elements 220A, is located below the first reference axis La and approximately at the vertical center of the first opening 40Aa. ing. Moreover, the first light emitting elements 220A, which are arranged at both ends in the left and right direction among the three first light emitting elements 220A, are also located approximately at the vertical center of the first opening 40Aa.

FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. 11. FIG. 12 shows a cross-sectional shape of the V-shaped first opening 40Aa along an inclined linear portion on one side.

As shown in FIG. 12, in the cross-sectional position along the inclined straight portion, the rear surface 52Ab of the first condensing lens 52A has a central portion 52Ab1 extending linearly in a vertical plane perpendicular to the front-rear direction of the lamp. . The rear surface 52Ab of the first condensing lens 52A extends in a convex curve shape so that both end portions 52Ab2 and 52Ab3 wrap around toward the front side of the lamp. Further, the front surface 52Aa of the first condensing lens 52A is configured similarly to the rear surface 52Ab of the first condensing lens 52A.

Therefore, the light emitted from each first light emitting element 220A and incident on the central portion 52Ab1 of the rear surface 52Ab of the first condensing lens 52A is emitted from the front surface 52Aa at the same output angle as the incident angle, and most of the light is emitted from the front surface 52Aa at the same output angle as the incident angle. reaches the first opening 40Aa of the light shielding plate 40.

Further, the light emitted from each first light emitting element 220A and incident on both ends 52Ab2 and 52Ab3 of the rear surface 52Ab of the first condensing lens 52A is refracted in a direction toward each other, and then further toward each other from the front surface 52Aa. Most of the light reaches the first opening 40Aa of the light shielding plate 40.

By adopting the configuration of this modification, the following effects can be obtained.

That is, since the first light emitting elements 220A are arranged in three locations in a V-shaped arrangement, the inverted V-shaped drawing light distribution pattern PAa (see FIGS. 8 and 9) can be made brighter and more uniform. can be formed.

Moreover, the first condensing lens 52A is configured to direct the emitted light from the first light emitting elements 220A arranged at three locations in a direction in which they approach each other. Therefore, the light emitted from the first light emitting elements 220A arranged at three locations can be made to enter the first opening 40Aa more efficiently.

In particular, it is not easy to ensure sufficient brightness for the drawing light distribution pattern PAa formed in a long distance area. However, by forming the drawing light distribution pattern PAa with the light emitted from the three first light emitting elements 220A as in this modification, sufficient brightness of the drawing light distribution pattern PAa can be ensured.

Next, a third modification of the first embodiment will be described.

FIG. 13 is a front view showing a drawing lamp according to a third modification of the first embodiment.

This modification differs from the first embodiment in the following points. A first opening 340Aa, a second opening 340Ba, and a third opening 340Ca are formed at intervals in the vertical direction in a light shielding plate 340 arranged on the rear side of the lamp of the first projection lens section 332A. A first condensing lens 352A, a second condensing lens 352B, and a third condensing lens 352C are arranged vertically on the rear side of the lamp of the first projection lens section 332A. Furthermore, a first light emitting element 320A, a second light emitting element 320B, and a third light emitting element 320C are arranged at intervals in the vertical direction on the rear side of the lamp of the first projection lens section 332A.

Specifically, the first opening 340Aa is formed such that the lower end position of the central part of the upper inner peripheral edge of the first opening 340Aa is located below the optical axis Axa of the first projection lens section 332A. There is. The second opening 340Ba is formed such that the lower end position of the central portion of the upper inner peripheral edge of the second opening 340Ba is located on the optical axis Axa. The third opening 340Ca is formed such that the lower end position of the central portion of the upper inner peripheral edge of the third opening 340Ca is located above the optical axis Axa. At this time, the amount of upward displacement from the optical axis Axa of the central lower end position of the upper inner peripheral edge in the third opening 340Ca is greater than the amount of downward displacement from the optical axis Axa of the central lower end position of the upper inner peripheral edge in the first opening 340Aa. It's also big.

Among the first opening 340Aa to the third opening 340Ca, the second opening 340Ba has a larger vertical width than the first opening 340Aa, and the third opening 340Ba has a larger vertical width than the second opening 340Ba. 340Ca is formed with a larger vertical width.

Further, the inner peripheral edges on both the left and right sides of the first opening 340Aa to the third opening 340Ca extend upward in a direction slightly expanding with respect to the vertical direction. The second opening 340Ba has a slightly larger horizontal width than the first opening 340Aa, and the third opening 340Ca has a slightly larger horizontal width than the second opening 340Ba.

The first light emitting element 320A, the second light emitting element 320B, and the third light emitting element 320C are arranged such that their light emission centers are located on the first reference axis La, the second reference axis Lb, and the third reference axis Lc, respectively. ing. The first reference axis La, the second reference axis Lb, and the third reference axis Lc pass through the lower end positions of the central portions of the upper inner peripheral edges of the first opening 340Aa, the second opening 340Ba, and the third opening 340Ca, respectively. In this way, it extends in the front and back direction of the lamp.

The first condensing lens 352A, the second condensing lens 352B, and the third condensing lens 352C are arranged at V in a positional relationship overlapping with the first aperture 340Aa, the second aperture 340Ba, and the third aperture 340Ca when viewed from the front of the lamp. It is formed to extend in the shape of a letter.

Specifically, the first condensing lens 352A is formed to surround the first opening 340Aa all around the first opening 340Aa with a vertical width larger than the first opening 340Aa, and has a substantially heart-shaped outer shape. ing. Further, the second condenser lens 352B is formed to surround the second aperture 340Ba all around the second aperture 340Ba with a vertical width larger than that of the second aperture 340Ba. It has an external shape of a shape. Furthermore, the third condenser lens 352C is formed to surround the third aperture 340Ca all around the third aperture 340Ca with a vertical width larger than that of the third aperture 340Ca, and has a substantially heart-shaped shape that is one size larger than the second condenser lens 352B. It has an external shape of a shape.

The shapes of the front and rear surfaces of the first condensing lens 352A to the third condensing lens 352C are the same as those in the first embodiment, but the first condensing lens 352A has an upper edge of the first condensing lens 352A. is connected to the lower edge of the second condenser lens 352B. Further, the second condenser lens 352B is connected to the upper edge of the second condenser lens 352B and to the lower edge of the third condenser lens 352C.

The first condenser lens 352A to the third condenser lens 352C input the emitted light from the first light emitting element 320A to the third light emitting element 320C, respectively, and then open the first aperture 340Aa to the third aperture 340Ca. The light beam is configured to be emitted toward the light shielding plate 340 as light that converges in the direction.

In this modification, the light emitted from the first light emitting element 320A to the third light emitting element 320Ca that has entered the first projection lens section 332A through the first opening 340Aa to the third opening 340Ca is different from that in the first embodiment. As in the case of , three inverted V-shaped drawing light distribution patterns PAa, PAb, and PAc are formed as the drawing light distribution patterns PA. The three drawing light distribution patterns PAa, PAb, and PAc are formed to have substantially the same size and to be arranged in series at substantially equal intervals (see FIGS. 8 and 9).

By adopting the configuration of this modified example, it is possible to form a drawing light distribution pattern similar to that of the first embodiment using light emitted from a single first projection lens portion 332A.

Furthermore, in this modification, the first to third condenser lenses 352A to 352C extending in a V-shape are arranged adjacent to each other in the vertical direction. Therefore, the light emitted from the first light emitting element 320A to the third light emitting element 320C can be made to efficiently enter the first opening 340Aa to the third opening 340Ca.

The drawing lamp according to the first embodiment and its modifications may be a vehicle-mounted lamp, or a lamp used for purposes other than vehicle-mounted.

The light shielding plate is arranged between the light emitting element and the projection lens so as to block a portion of the light traveling from the light emitting element to the projection lens, and there are no particular limitations on its specific arrangement.

The specific opening shape of the opening is not particularly limited as long as it is formed to have a V-shaped opening. The V-shaped opening does not necessarily have to have a V-shaped upper inner periphery as long as its lower inner periphery extends in a V-shape.

The specific arrangement and shape of the condenser lens is not particularly limited as long as it is formed to extend in a V-shape overlapping the opening of the light shielding plate when viewed from the front of the lamp. . Moreover, the condensing lens does not necessarily have to be arranged in a positional relationship that completely overlaps the opening of the light shielding plate.

(Second embodiment)
FIG. 14 is a front view showing a drawing lamp 410 according to the second embodiment of the present disclosure. Further, FIG. 15 is a plan view showing a drawing lamp 410 according to the second embodiment. FIG. 16 is a side view showing a drawing lamp 410 according to the second embodiment. Furthermore, FIG. 17 is an exploded perspective view of the main components of the drawing lamp 410 according to the second embodiment.

In Figures 14 to 17, the direction indicated by The direction is "upward". The same applies to figures other than FIGS. 14 to 17.

Before explaining the specific configuration of the drawing lamp 410 according to this embodiment, we will provide an overview of it.

FIG. 20 is a side view showing the drawing lamp 410 according to the first embodiment mounted on a vehicle 500. FIG. 21 is a plan view showing the drawing lamp 410 according to the first embodiment mounted on a vehicle 500. Note that FIG. 21 shows a state in which the drawing lamp 410 on the left side is lit.

As shown in FIGS. 20 and 21, the drawing lamp 410 is mounted on a side end in the vehicle width direction of the front end of the vehicle 500, and is designed to emit light diagonally downward toward the outside in the vehicle width direction. It is composed of The drawing lamp 410 lights up in synchronization with the lighting of a front turn signal lamp (not shown). Thereby, the drawing lamp 410 is configured to form a drawing light distribution pattern PA2 on the road surface 402 in front of the vehicle.

As shown in FIGS. 20 and 21, when the drawing lamp 410 is mounted on the vehicle 500, the front of the lamp is oriented diagonally downward with respect to the longitudinal direction of the vehicle. There is. However, as shown in FIGS. 14 to 17, when the drawing lamp 410 is a single item, the front of the lamp is configured to face in the horizontal direction.

Next, the specific configuration of the drawing lamp 410 will be described.

FIG. 18 is a cross-sectional view taken along the line XVIII-XVIII in FIG. 14. FIG. 19 is a cross-sectional view taken along line XIX-XIX in FIG. 14.

As shown in FIGS. 18 and 19, the drawing lamp 410 is configured to emit light emitted from a light emitting element toward the front of the lamp through a projection lens 430. The drawing lamp 410 includes a first light emitting element 420A and a second light emitting element 420B as light emitting elements.

The projection lens 430 has a configuration in which two first projection lens sections 432A and a second projection lens section 432B having the same configuration are arranged side by side in the left-right direction. The first projection lens section 432A and the second projection lens section 432B are formed such that their respective optical axes Axa2 and Axb2 extend in the lamp longitudinal direction at the same height position.

The first projection lens section 432A and the second projection lens section 432B are plano-convex lenses whose respective front faces 432Aa, 432Ba are formed from convex curved surfaces, and have a rectangular (specifically, substantially square) outer shape when viewed from the front of the lamp. The first projection lens section 432A and the second projection lens section 432B are integrally formed with their respective effective lens surfaces (i.e. the front faces 432Aa, 432Ba that perform the lens function) adjacent to each other.

The first projection lens section 432A and the second projection lens section 432B are surrounded by an outer peripheral flange section 434 formed to extend along the respective rear surfaces. A pair of mounting flanges 436 are formed on both left and right sides of the outer peripheral flange portion 434 . The pair of left and right mounting flange portions 436 each have an L-shaped horizontal cross-sectional shape. The pair of left and right mounting flange portions 436 are formed such that their respective rear end surfaces are located on the same plane orthogonal to the front-rear direction of the lamp.

The first light-emitting element 420A and the second light-emitting element 420B are both white light-emitting diodes and have a rectangular (specifically, square) light-emitting surface 420a.

The first light emitting element 420A and the second light emitting element 420B are mounted on a common substrate 422 in a state where they are arranged on the rear side of the lamp of the first projection lens part 432A and the second projection lens part 432B, respectively. This substrate 422 is supported by a heat sink 460 while being arranged so as to extend along a plane orthogonal to the front-rear direction of the lamp.

A light shielding plate 440 is disposed between the first light-emitting element 420A and the second light-emitting element 420B and the first projection lens unit 432A and the second projection lens unit 432B to block a portion of the light traveling from the first light-emitting element 420A and the second light-emitting element 420B to the first projection lens unit 432A and the second projection lens unit 432B. The light shielding plate 440 is made of a thin plate extending along a plane perpendicular to the front-to-rear direction of the lamp.

The light shielding plate 440 is positioned so as to be in contact with the pair of right and left mounting flanges 436 of the projection lens 430 from the rear side of the lamp at both left and right ends. Thereby, the light shielding plate 440 is arranged along a vertical plane including the rear focal points Fa2 and Fb2 of the first projection lens section 432A and the second projection lens section 432B.

Two first openings 440Aa and 440Ac are formed in the light shielding plate 440 at a portion on the rear side of the lamp of the first projection lens portion 432A. Furthermore, two second openings 440Bb and 440Bd are formed in the light shielding plate 440 at a portion on the rear side of the lamp of the second projection lens section 432B.

FIG. 22A is a front view showing the main parts of the drawing lamp 410.

In FIG. 22A, the two-dot chain line shows the state in which the two second openings 440Bb and 440Bd are moved in parallel to the position of the first projection lens section 432A located on the right side (left side when viewed from the front of the lamp). Further, a state in which the two first openings 440Aa and 440Ac are moved in parallel to the position of the second projection lens section 432B located on the left side is shown by a two-dot chain line.

As shown in FIG. 22A, the two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd are all formed to have a V-shaped opening shape when the lamp is viewed from the front. In this case, the opening angle of the V-shape is set to a value of about 90 to 150° (for example, a value of about 120°).

Among the first opening 440Aa and the second opening 440Bb, the second opening 440Bb is located higher than the first opening 440Aa. Moreover, in the first opening 440Ac and the second opening 440Bb, the first opening 440Ac is located higher than the second opening 440Bb. Furthermore, in the first opening 440Ac and the second opening 440Bd, the second opening 440Bd is located higher than the first opening 440Ac.

At this time, the two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd are arranged in the following order: first opening 440Aa, second opening 440Bb, first opening 440Ac, and second opening 440Bd. , the vertical width of the opening gradually increases. The two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd are arranged in the vertical direction in the order of first opening 440Aa, second opening 440Bb, first opening 440Ac, and second opening 440Bd. They are formed so that the distance between them gradually increases.

As for the overall arrangement of the two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd, the central lower end position of the upper inner peripheral edge of the first opening 440Ac is the optical axis of the first projection lens section 432A. It is arranged so as to be located above Axa2.

Furthermore, the two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd are formed such that their respective inner peripheral edges on both left and right sides extend upward in a direction slightly expanding with respect to the vertical direction. There is. In addition, the two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd are formed such that their inner peripheral edges on both left and right sides are located on the same pair of left and right imaginary straight lines.

The first light-emitting element 420A is disposed below the optical axis Axa2 of the first projection lens unit 432A. The second light-emitting element 420B is disposed above the optical axis Axb2 of the second projection lens unit 432B.

Specifically, the first light emitting element 420A is arranged such that its light emitting center is located on the first reference axis La2 extending in the longitudinal direction of the lamp below the optical axis Axa2, and the second light emitting element 420B is , the light emitting center is positioned on a second reference axis Lb2 extending in the longitudinal direction of the lamp above the optical axis Axb2. At this time, the first reference axis La2 is set at a position passing through the central lower end position of the lower inner peripheral edge of the first opening 440Aa of the light shielding plate 440. Further, the second reference axis Lb2 is set at a position passing through the center lower end position of the lower inner peripheral edge of the second opening 440Bd of the light shielding plate 440.

The first light emitting element 420A and the second light emitting element 420B are connected to an electronic control unit (not shown), and are controlled to turn on and off depending on the vehicle running condition and the like.

A condensing lens assembly 450 is arranged between the substrate 422 and the light shielding plate 440.

The condensing lens assembly 450 has a configuration in which a first condensing lens 452A and a second condensing lens 452B are aligned in the left-right direction and are integrally formed via a plate-shaped portion. The first condenser lens 452A and the second condenser lens 452B are arranged such that their respective optical axes are located on the first reference axis La2 and the second reference axis Lb2.

The first condensing lens 452A and the second condensing lens 452B have rear surfaces 452Ab and 452Bb formed in a convex curved shape. The first condensing lens 452A and the second condensing lens 452B have respective front surfaces 452Aa and 452Ba formed into convex curved surfaces having a smaller curvature than rear surfaces 452Ab and 452Bb.

Thereby, the first condensing lens 452A is configured to make the emitted light from the first light emitting element 420A enter the first opening 440Aa of the light shielding plate 440 as light parallel to the first reference axis La2. . Further, the second condensing lens 452B makes the light emitted from the second condensing lens 452B enter the two second openings 440Bb and 440Bd of the light shielding plate 440 as light parallel to the second reference axis Lb2. It is configured.

The condensing lens assembly 450 has a configuration in which a pair of mounting flanges 454 are formed on both left and right sides of a plate-shaped portion located around the first condensing lens 452A and the second condensing lens 452B. The pair of left and right mounting flanges 454 have an L-shaped horizontal cross-sectional shape. The front end surfaces of the pair of left and right mounting flanges 454 abut against both the left and right ends of the light shielding plate 440 from the rear side of the lamp, so that the first condenser lens 452A and the second condenser lens 452B are aligned with the first reference axis La2. and is positioned on the second reference axis Lb2.

The heat sink 460 comprises a main body 462 extending along a plane perpendicular to the front-to-rear direction of the lamp, a number of heat dissipation fins 464 extending along a vertical plane from the main body 462 toward the rear of the lamp, and a pair of mounting flanges 466 formed on both the left and right sides of the main body 462.

The board 422 is positioned and supported by tightening screws 472 at two diagonal locations while being in surface contact with the main body 462 of the heat sink 460.

Furthermore, the projection lens 430, light shielding plate 440, and condensing lens assembly 450 are positioned by tightening the screws 374 at two diagonal locations on the pair of left and right mounting flanges 466 of the heat sink 460. Supported. The screws are tightened by connecting the pair of left and right mounting flanges 436 of the projection lens 430, the left and right ends of the light shielding plate 440, and the pair of left and right mounting flanges 454 of the condensing lens assembly 450 to the pair of left and right mounting flanges of the heat sink 460. This is done by co-tightening with the parts 466 superimposed on each other. Note that positioning pins 436a are formed on the pair of left and right mounting flanges 436 of the projection lens 430, respectively. On the other hand, pin insertion holes 440a into which positioning pins 436a are inserted are provided at both left and right ends of the light shielding plate 440, a pair of left and right mounting flanges 454 of the condenser lens assembly 450, and a pair of left and right mounting flanges 466 of the heat sink 460; 454a and 466a are formed, respectively.

Next, the drawing light distribution pattern PA2 shown in FIGS. 20 and 21 will be described.

As described above, the drawing light distribution pattern PA2 is formed by the irradiation light from the drawing lamp 410. The drawing light distribution pattern PA2 is composed of four first drawing light distribution patterns PAa2, PAc2 and second drawing light distribution patterns PAb2, PAd2, as shown in FIGS. 20 and 21.

The four first drawing light distribution patterns PAa2, PAc2 and the second drawing light distribution patterns PAb2, PAd2 are all light distribution patterns in an inverted V shape (that is, a shape pointed toward the front of the lamp). The four first drawing light distribution patterns PAa2, PAc2 and the second drawing light distribution patterns PAb2, PAd2 have approximately the same size and are arranged in series at approximately equal intervals, and are arranged at long distances on the road surface 2 in front of the vehicle. area, intermediate range area, short range area, and close range area.

The first drawing light distribution patterns PAa2 and PAc2 formed in the long-distance area and the short-distance area are formed by emitting light from the first light emitting element 420A toward the front of the lamp via the first projection lens section 432A. This is a light distribution pattern formed by In addition, the second drawing light distribution patterns PAb2 and PAd2 formed in the intermediate distance region and the close distance region are such that the light emitted from the second light emitting element 420B is directed toward the front of the lamp via the second projection lens portion 432B. This is a light distribution pattern formed by irradiation.

The first drawing light distribution pattern PAa2 is formed as an inverted projection image of the first opening 440Aa formed in the light shielding plate 440 so as to have a V-shaped opening shape. The first opening 440Aa is located considerably below the optical axis Axa2 of the first projection lens section 432A. For this reason, the light emitted from the first light emitting element 420A is irradiated toward the front of the lamp as light that is directed considerably upward relative to the optical axis Axa2. As a result, the first drawing light distribution pattern PAa2 is formed in a long distance area. Ru.

The second drawing light distribution pattern PAb2 is formed as an inverted projection image of the second opening 440Bb, which is formed in the light shielding plate 440 so as to have a V-shaped opening shape. The second opening 440Bb is located below the optical axis Axb2 of the second projection lens portion 432B. Therefore, the light emitted from the second light-emitting element 420B is irradiated toward the front of the lamp as light directed upward from the optical axis Axb2. As a result, the second drawing light distribution pattern PAb2 is formed in the mid-distance region.

The first drawing light distribution pattern PAc2 is formed as an inverted projection image of the first opening 440Ac formed in the light shielding plate 440 so as to have a V-shaped opening shape. The first opening 440Ac is located approximately on the optical axis Axa2 of the first projection lens section 432A. Therefore, the light emitted from the first light emitting element 420A is emitted toward the front of the lamp as light substantially parallel to the optical axis Axa2. Thereby, the first drawing light distribution pattern PAc2 is formed in a short distance area.

The second drawing light distribution pattern PAd2 is formed as an inverted projection image of the second opening 440Bd formed in the light shielding plate 440 so as to have a V-shaped opening shape. Since the second opening 440Bd is located above the optical axis Axb2 of the second projection lens section 432B, the light emitted from the second light emitting element 420B is forward of the lamp as light directed downward from the optical axis Axb2. The second drawing light distribution pattern PAd2 is thereby formed in a close range area.

At that time, the light emitted from the first light emitting element 420A efficiently enters the first openings 440Aa and 440Ac by the first condenser lens 452A having a biconvex lens shape. Therefore, sufficient brightness of the first drawing light distribution patterns PAa2 and PAc2 is ensured. Further, the light emitted from the second light emitting element 420B efficiently enters the second openings 4440Bb and 440Bd by the second condensing lens 452B having a biconvex lens shape. Therefore, sufficient brightness of the second drawing light distribution patterns PAb2 and PAd2 is ensured.

The four first drawing light distribution patterns PAa2, PAc2 and the second drawing light distribution patterns PAb2, PAd2 are formed to have substantially the same size. This is because the vertical widths of the first opening 440Aa, second opening 440Bb, first opening 440Ac, and second opening 440Bd increase in this order, and the inner peripheral edges on both left and right sides thereof are directed upward. This is because the inner peripheral edges on both the left and right sides are located on the same pair of left and right imaginary straight lines.

Next, the operation of this embodiment will be explained.

The drawing lamp 410 according to the present embodiment distributes light for drawing by irradiating the light emitted from the first light emitting element 420A and the second light emitting element 420B toward the front of the lamp through the light shielding plate 440 and the projection lens 430. The structure is such that a pattern PA2 is formed. The projection lens 430 has a configuration in which a first projection lens section 432A and a second projection lens section 432B are arranged side by side in the left-right direction (a required direction intersecting the front-rear direction of the lamp). Furthermore, two first openings 440Aa and 440Ac are formed at the rear side of the lamp of the first projection lens section 432A in the light shielding plate 440 at intervals in the vertical direction (direction intersecting the above-mentioned required direction). Two second openings 440Bb and 440Bd are formed on the rear side of the lamp of the second projection lens section 432B with an interval in the vertical direction. Further, a first light emitting element 420A is arranged on the rear side of the lamp between the two first openings 440Aa and 440Ac, and a second light emitting element 420B is arranged on the rear side of the lamp between the two second openings 440Bb and 440Bd. ing.

By the light emitted from the first light emitting element 420A that enters the first projection lens section 432A through the two first openings 440Aa and 440Ac, two first Drawing light distribution patterns PAa2 and PAc2 are formed. Furthermore, the light emitted from the second light emitting element 420B that enters the second projection lens section 432B through the two second openings 440Bb and 440Bd produces two inverted projected images of the two second openings 440Bb and 440Bd. Second drawing light distribution patterns PAb2 and PAd2 are formed. This allows other vehicles, pedestrians, etc. to be alerted.

The first projection lens section 432A and the two first openings 440Aa, 440Ac, as well as the second projection lens section 432B and the two second openings 440Bb, 440Bd are arranged so that the two first drawing light distribution patterns PAa2, PAc2 and the two second drawing light distribution patterns PAb2, PAd2 are alternately formed in a series arrangement.

The two first openings 440Aa and 440Ac are formed on the rear side of the lamp of the first projection lens section 432A. Two second openings 440Bb and 440Bd are formed on the rear side of the lamp of the second projection lens section. Therefore, there is no need to make the distance between the two first openings 440Aa and 440Ac and the distance between the two second openings 440Bb and 440Bd extremely narrow.

Therefore, even if the light shielding plate 440 is provided, the rigidity of the portion located between the two first openings 440Aa and 440Ac and the portion located between the two second openings 440Bb and 440Bd is reduced. It becomes difficult. Thereby, the four first drawing light distribution patterns PAa2, PAc2 and the second drawing light distribution patterns PAb2, PAd2 constituting the drawing light distribution pattern PA2 can be formed in series in close proximity to each other.

As described above, according to the present embodiment, in the drawing lamp 410 configured to form the drawing light distribution pattern PA2, the four first drawing light distribution patterns PAa2, PAc2, and The second drawing light distribution patterns PAb2 and PAd2 can be formed in series in close proximity to each other. Thereby, it is possible to form a drawing light distribution pattern that has an excellent function of calling attention to the surroundings.

Further, in this embodiment, since the two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd are arranged at intervals in the vertical direction, the two first drawing light distribution patterns PAa2 , PAc2 and the two second drawing light distribution patterns PAb2 and PAd2 can be formed in series in the direction along the lamp irradiation direction, thereby further enhancing the effect of calling attention to the surroundings.

In the drawing lamp 410 of this embodiment, the two first openings 440Aa and 440Ac and the two second openings 440Bb and 440Bd are both formed to have a V-shaped opening shape. Therefore, the light emitted from the light emitting element and passing through the two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd forms the four inverted V-shaped first drawing light distribution patterns as an inverted projection image. PAa2, PAc2 and second drawing light distribution patterns PAb2, PAd2 are formed in series. Thereby, the effect of calling attention to the surroundings can be further enhanced.

Furthermore, when the four inverted V-shaped first drawing light distribution patterns PAa2, PAc2 and the second drawing light distribution patterns PAb2, PAd2 are formed in series, the configuration of this embodiment is It is desirable that it be adopted. This point will be explained in detail below.

FIG. 22B is a front view showing a drawing lamp according to a comparative example. FIG. 22B is a front view of the drawing lamp viewed from the same direction as FIG. 22A.

As shown in FIG. 22B, in this comparative example, instead of the light shielding plate 440 of this embodiment, a projection lens section 432' having the same configuration as the first projection lens section 432A of this embodiment is provided on the rear side of the lamp. A light shielding plate 440' is disposed in which four openings 440a', 440b', 440c', and 440d' each having a V-shaped opening are formed at intervals in the vertical direction. .

At that time, the four openings 440a', 440b', 440c', and 440d' are formed to have the same opening shape as the first openings 440Aa, 440Ac and the second openings 440Bb, 440Bd of this embodiment, respectively. has been done.

Furthermore, in this comparative example, the light emitting element 420' is arranged on the optical axis Ax2' of the projection lens section 432'. Further, a condenser lens 452' for making the light emitted from the light emitting element 420' enter the four openings 440a' to 440d' is arranged on the optical axis Ax2'.

When a light shielding plate 440' like this comparative example is employed, the portions located between the four openings 440a' to 440d' are formed to have a narrow width and extend in a V-shape. For this reason, it becomes difficult to ensure the rigidity of the light shielding plate 440'.

In contrast, as shown in FIG. 22A, in the light shielding plate 440 of this embodiment, the distance between the two first openings 440Aa, 440Ac and the distance between the two second openings 440Bb, 440Bd are sufficiently ensured. This makes it possible to ensure sufficient rigidity in the portion between the two first openings 440Aa, 440Ac and the portion between the two second openings 440Bb, 440Bd.

Furthermore, in this embodiment, a first light emitting element is provided between the first light emitting element 420A and the light shielding plate 440 for condensing the emitted light from the first light emitting element 420A toward the two first openings 440Aa and 440Ac. A condensing lens 452A is arranged. A second condensing lens 452B is arranged between the second light emitting element 420B and the light shielding plate 440 to condense the light emitted from the second light emitting element 420B toward the two second openings 440Bb and 440Bd. ing. Therefore, the four first drawing light distribution patterns PAa2, PAc2 and the second drawing light distribution patterns PAb2, PAd2 can be formed as brighter and more uniform light distribution patterns.

In the second embodiment, the two first openings 440Aa and 440Ac and the two second openings 440Bb and 440Bd formed in the light shielding plate 440 are both formed to have a V-shaped opening shape. However, the two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd may have other opening shapes (for example, opening shapes such as a downward arrow or an inverted trapezoid).

In the second embodiment, the emitted light from the first light emitting element 420A and the second light emitting element 420B passes through the first condensing lens 452A and the second condensing lens 452B to the two first openings 440Aa, 440Ac and The light enters the two second openings 440Bb and 440Bd. However, the drawing lamp is configured such that the light emitted from the first light emitting element 420A and the second light emitting element 420B directly enters the two first openings 440Aa, 440Ac and the two second openings 440Bb, 440Bd. Good too.

In the second embodiment, two first openings 440Aa, 440Ac are formed on the rear side of the lamp of the first projection lens portion 432A in the light shielding plate 440. Two second openings 440Bb, 440Bd are formed on the rear side of the lamp of the second projection lens portion 432B. However, only a single second opening 440Bb may be formed on the rear side of the lamp of the second projection lens portion 432B.

In the second embodiment, the first projection lens section 432A and the second projection lens section 432B are formed such that their respective optical axes Axa2 and Axb2 extend in the front-rear direction of the lamp at the same height position. However, other configurations may be adopted. For example, the optical axis Axa2 of the first projection lens section 432A may be formed to extend upward more than the optical axis Axb2 of the second projection lens section 432B.

In the second embodiment, the first light emitting element 420A and the second light emitting element 420B have been described as emitting white light, but it is also possible to adopt other light emitting colors (for example, amber or red). It is.

In the second embodiment, the drawing lamp 410 has been described as being mounted on the side end in the vehicle width direction of the front end of the vehicle 500, but it may also be mounted on the rear end, side surface, etc. of the vehicle 500. It is also possible to do so.

In the second embodiment, the drawing light distribution pattern PA2 is formed on the road surface 402 in front of the vehicle by the light emitted from the drawing lamp 410, but it is also possible to configure the drawing light distribution pattern to be formed on a wall surface located in front of the lamp or a wall surface extending toward the front of the lamp.

Next, a modification of the second embodiment will be described.

First, a first modification of the second embodiment will be described.

FIG. 23 is a front view showing the main parts of the drawing lamp 510 according to the first modification of the second embodiment. FIG. 23 is a diagram of the drawing lamp 510 viewed from the same direction as FIG. 22A. 24A is a cross-sectional view taken along the line XXIVa-XXIVa in FIG. 23, and FIG. 24B is a cross-sectional view taken along the line XXIVb-XXIVb in FIG.

As shown in FIGS. 23, 24A, and 24B, the basic configuration of this modification is the same as that of the second embodiment, but the number and arrangement of the first light emitting element 420A and the second light emitting element 420B are different. This is partially different from the second embodiment.

In this modification, a first light emitting element 420A is arranged on the rear side of each of the two first openings 440Aa and 440Ac formed in the light shielding plate 440. A second light emitting element 420B is arranged on the rear side of each of the two second openings 440Bb and 440Bd.

Specifically, the two first light emitting elements 420A arranged on the rear side of the two first openings 440Aa and 440Ac have their respective light emission centers located above the first openings 440Aa and 440Ac when viewed from the front of the lamp. It is arranged so as to be located at the center lower end position of the inner peripheral edge. In addition, the two second light emitting elements 420B arranged on the rear side of the two second openings 440Bb and 440Bd have their respective light emitting centers located at the upper inner periphery of the second openings 440Bb and 440Bd when viewed from the front of the lamp. It is arranged so as to be located at the center lower end position.

Thereby, in this modification, the emitted light from the first light emitting element 420A located on the lower side efficiently enters the first opening 440Aa via the first condensing lens 452A. Emitted light from the first light emitting element 420A located on the upper side efficiently enters the first opening 440Ac via the first condenser lens 452A. Furthermore, the light emitted from the second light emitting element 420B located on the lower side efficiently enters the second opening 440Bb via the second condenser lens 452B. Emitted light from the second light emitting element 420B located on the upper side efficiently enters the second opening 440Bd via the second condenser lens 452B.

By adopting the configuration of this modification, the amount of light that enters the first projection lens section 432A through the two first openings 440Aa and 440Ac increases. Therefore, it becomes easy to ensure the brightness of the first drawing light distribution patterns PAa2 and PAc2 (see FIGS. 20 and 21) formed in the long-distance area and the short-distance area. Furthermore, the amount of light that enters the second projection lens section 432B via the two second openings 440Bb and 440Bd increases. Therefore, it becomes easy to ensure the brightness of the second drawing light distribution patterns PAb2 and PAd2 formed in the intermediate distance area and the close distance area.

Next, a second modification of the above embodiment will be described.

25A and 25B show main parts of a drawing lamp 610 according to a second modification of the second embodiment, and FIGS. 25A and 25B are sectional views illustrating the same cross section as FIGS. 24A and 24B, respectively. It is.

As shown in FIGS. 25A and 25B, the basic configuration of this modification is the same as that of the first modification, except that a light guide 680 is disposed between the substrate 422 and the light shielding plate 440. This differs from the first modification in this point.

In other words, in this modified example, a light guide 680 is disposed between the substrate 422 and the light shielding plate 440, instead of the focusing lens assembly 450 of the first modified example. The light guide 680 includes a plate-shaped portion 682 formed to extend along the rear surface of the light shielding plate 440, and four light guide portions 684Aa, 684Ac, 684Bb, and 684Bd formed to protrude from the rear surface of the plate-shaped portion 682 toward the rear of the lamp.

The four light guide portions 684Aa to 684Bd are formed at positions corresponding to the two first openings 440Aa and 440Ac and the two second openings 440Bb and 440Bd formed in the light shielding plate 440.

Specifically, the light-guiding portion 684Aa is formed so as to expand from the first light-emitting element 420A located below toward the first opening 440Aa. The light-guiding portion 684Aa has a trapezoidal vertical cross-sectional shape, and its rear end face is located near the front of the first light-emitting element 420A located below. In addition, the front edge of the light-guiding portion 684Aa is connected to the plate-shaped portion 682 at a position surrounding the first opening 440Aa.

The light guide portion 684Ac is formed to expand from the first light emitting element 420A located on the upper side toward the first opening portion 440Ac. The light guide portion 684Ac has a trapezoidal vertical cross-sectional shape, and the rear end surface is located near the front of the first light emitting element 420A located on the upper side. Further, the front end edge of the light guide section 684Ac is connected to the plate-like section 682 at a position surrounding the first opening section 440Ac.

The light guide portion 684Bb is formed to expand from the second light emitting element 420B located on the lower side toward the second opening portion 440Bb. The light guide portion 684Bb has a trapezoidal vertical cross-sectional shape, and its rear end surface is located near the front of the second light emitting element 420B located below. Further, the front edge of the light guide section 684Bb is connected to the plate-like section 282 at a position surrounding the second opening section 440Bb.

The light guide portion 684Bd is formed to expand from the second light emitting element 420B located on the upper side toward the second opening portion 440Bd. The light guide portion 684Bd has a trapezoidal vertical cross-sectional shape, and its rear end surface is located near the front of the second light emitting element 420B located above. Further, the front edge of the light guide section 684Bd is connected to the plate-like section 682 at a position surrounding the second opening section 440Bd.

As a result, in this modification, after the light emitted from the first light emitting element 420A located on the lower side enters the light guide section 684Aa from the rear end surface, it is totally reflected directly or on the peripheral wall surface of the light guide section 684Aa. After that, the light enters the first opening 440Aa. Further, after the emitted light from the first light emitting element 420A located on the upper side enters the light guide section 684Ac from the rear end surface, it is directly reflected or completely reflected on the peripheral wall surface of the light guide section 684Ac, and then the light is emitted from the first opening. 440Ac.

Similarly, after the light emitted from the second light emitting element 420B located on the lower side enters the light guide section 684Bb from the rear end surface, it is directly reflected or completely reflected on the peripheral wall surface of the light guide section 684Bb, and then the light emitted from the second light emitting element 420B located on the lower side enters the light guide section 684Bb from the rear end surface. The light enters the opening 440Bb. Further, after the light emitted from the second light emitting element 420B located on the upper side enters the light guide section 684Bd from the rear end surface, it is directly or completely reflected on the peripheral wall surface of the light guide section 684Bd and then enters the second opening. 440Bd.

That is, the light emitted from the first light emitting element 420A located on the lower side can efficiently enter the first opening 440Aa via the light guide section 684Aa. Furthermore, the light emitted from the first light emitting element 420A located on the upper side can efficiently enter the first opening 440Ac via the light guide 684Ac.

Similarly, the light emitted from the second light emitting element 420B located on the lower side can efficiently enter the second opening 440Bb via the light guide 684Bb. Furthermore, the light emitted from the second light emitting element 420B located on the upper side can efficiently enter the second opening 440Bd via the light guide section 684Bd.

Therefore, in this modification as well, as in the case of the first modification, it is possible to increase the amount of light incident on the first projection lens section 432A and the second projection lens section 432B. As a result, the first drawing light distribution patterns PAa2 and PAc2 are formed in the long distance area and the short distance area, the second drawing light distribution pattern PAb2 is formed in the middle distance area, and the second drawing light distribution pattern is formed in the close distance area. It becomes easy to ensure the brightness of the light distribution pattern PAd2 (see FIGS. 20 and 21).

Moreover, in this modification, the light emitted from the first light emitting element 420A located on the lower side becomes difficult to enter the first opening 440Ac located on the upper side. Furthermore, the light emitted from the first light emitting element 420A located on the upper side becomes difficult to enter the first opening 440Aa located on the lower side. Similarly, the light emitted from the second light emitting element 420B located on the lower side becomes difficult to enter the second opening 440Bd located on the upper side. Further, the light emitted from the second light emitting element 420B located on the upper side becomes difficult to enter the second opening 440Bb located on the lower side.

Therefore, by individually lighting each of the two first light emitting elements 420A and the two second light emitting elements 420B, the four first drawing light distribution patterns PAa2, PAc2 and the second drawing light distribution patterns PAb2, PAd2 are generated. can be formed individually. Therefore, as the drawing light distribution pattern PA2, a mode in which the four first drawing light distribution patterns PAa2, PAc2 and a second drawing light distribution pattern PAb2, PAd2 are formed simultaneously and a mode in which these are formed individually are selected. It becomes possible to do so.

The drawing lamp according to the second embodiment may be an in-vehicle lamp, or may be a lamp used for purposes other than in-vehicle use.

The specific arrangement of the light-shielding plate is not particularly limited as long as it is configured between the light-emitting element and the projection lens to block part of the light traveling from the light-emitting element to the projection lens.

The arrangement of the first projection lens section and the plurality of first apertures and the arrangement of the second projection lens section and at least one second aperture are defined as "each of the plurality of first drawing light distribution patterns" and "at least one The specific arrangement is not particularly limited as long as it is possible to alternately form the "second drawing light distribution patterns" in series.

For example, as a configuration for realizing this, the first projection lens section and the second projection lens are arranged so that the optical axis of the first projection lens section and the optical axis of the second projection lens section are parallel to each other. be done. The first projection lens section and the second projection lens are arranged such that the amount of displacement of the plurality of first apertures from the optical axis of the first projection lens section in a direction intersecting with the required direction and the amount of displacement of the plurality of first apertures from the optical axis of the first projection lens section and the second The amount of displacement of the projection lens section from the optical axis may be set to different values. The first projection lens section and the second projection lens are arranged such that the amount of displacement of the plurality of first apertures from the optical axis of the first projection lens section in a direction intersecting with the required direction and the amount of displacement of the plurality of first apertures from the optical axis of the first projection lens section and the second The amount of displacement of the projection lens section from the optical axis may be set to the same value. The first projection lens section and the second projection lens may be arranged at different inclination angles between the optical axis of the first projection lens section and the optical axis of the second projection lens section in a direction intersecting the desired direction.

Hereinafter, embodiments of the present disclosure will be described using the drawings.

Third Embodiment
Fig. 26 is a front view showing a drawing lamp 710 according to a third embodiment of the present disclosure. Fig. 27 is a cross-sectional view taken along line XXVII-XXVII in Fig. 26. Fig. 28 is a cross-sectional view taken along line XXVIII-XXVIII in Fig. 26. Fig. 29 is an exploded perspective view of the main components of the drawing lamp 710 according to the third embodiment.

In FIGS. 26 to 29, the direction indicated by The direction shown is "upward". The same applies to figures other than FIGS. 26 to 29.

Before explaining the specific configuration of the drawing lamp 710 according to this embodiment, its outline will be explained.

FIG. 30 is a side view showing a drawing lamp 710 according to the third embodiment mounted on a vehicle 800. FIG. 31 is a plan view showing a drawing lamp 710 according to the third embodiment mounted on a vehicle 800. Note that FIG. 31 shows a state in which the drawing lamp 710 on the left side is lit.

As shown in FIGS. 30 and 31, the drawing lamp 710 is mounted on the front end of the vehicle 800 at the side end in the vehicle width direction, and is designed to emit light diagonally downward toward the outside in the vehicle width direction. It is composed of At this time, the drawing lamp 710 is turned on in synchronization with the lighting of the front turn signal lamp (not shown). Thereby, the drawing lamp 710 is configured to form a drawing light distribution pattern PA3 on the road surface 702 in front of the vehicle.

As shown in FIGS. 30 and 31, when the drawing lamp 710 is mounted on the vehicle 800, the front of the lamp is oriented diagonally downward with respect to the longitudinal direction of the vehicle. . However, as shown in FIGS. 26 to 29, when the drawing lamp 710 is a single item, the front of the lamp is configured to face in the horizontal direction.

Next, the specific configuration of the drawing lamp 710 will be described.

As shown in FIGS. 27 and 28, the drawing lamp 710 is configured to emit light emitted from a light emitting element toward the front of the lamp through a projection lens 730. The drawing lamp 710 includes three light emitting elements: a first light emitting element 720A, a second light emitting element 720B, and a third light emitting element 720C.

The projection lens 730 comprises a lens body 732, an outer peripheral flange 734, and a pair of left and right mounting flanges 736.

The lens body 732 is a plano-convex lens in which the front surface 732a of the lens body 732 is a convex curved surface, and has an optical axis Ax3 extending in the front-to-rear direction of the lamp. The lens body 732 has a rectangular (specifically, square) outer shape when viewed from the front of the lamp, and is surrounded by an outer peripheral flange portion 734.

The outer peripheral flange portion 734 is formed to extend along the rear surface of the lens body portion 732. The pair of left and right mounting flange portions 736 are formed on both left and right sides of the outer peripheral flange portion 734 to have an L-shaped horizontal cross section and extend toward the rear of the lamp. The rear end surfaces of the pair of left and right mounting flange portions 736 are located on a vertical plane perpendicular to the front-rear direction of the lamp.

The first light emitting element 720A, the second light emitting element 720B, and the third light emitting element 720C are all white light emitting diodes and have a rectangular (specifically square) light emitting surface 720a.

The first light-emitting element 720A to the third light-emitting element 720C are mounted on a common substrate 722, arranged on the rear side of the lamp of the lens body 732. The substrate 722 is supported by a heat sink 760, arranged so as to extend along a vertical plane perpendicular to the front-to-rear direction of the lamp.

A light shielding plate 740 is disposed between the first light-emitting element 720A to the third light-emitting element 720C and the projection lens 730 to block a portion of the light traveling from the first light-emitting element 720A to the third light-emitting element 720C toward the lens body 732 of the projection lens 730. The light shielding plate 740 is made of an opaque resin molded product.

The light shielding plate 740 has a first opening 742Aa, a second opening 742Ba, and a third opening for allowing the light emitted from the first light emitting element 720A, the second light emitting element 720B, and the third light emitting element 720C to enter the lens body 732. A main body 742 in which an opening 742Ca is formed, and a first cylindrical member extending from the main body 742 toward the rear of the lamp so as to surround the first opening 742Aa, the second opening 742Ba, and the third opening 742Ca. It includes a portion 744A, a second cylindrical portion 744B, and a third cylindrical portion 744C.

The main body portion 742 is formed to extend along a vertical plane perpendicular to the front-rear direction of the lamp. The circular area 742d centered on the optical axis Ax3 is configured such that the front surface of the circular area 742d extends along a concave curved surface (specifically, a meridional image surface) C3 including the rear focal point F of the lens body 732 of the projection lens 730. is formed.

The first opening 742Aa to the third opening 742Ca are formed at intervals in the vertical direction. The first opening 742Aa is located below the optical axis Ax3. The second opening 742Ba is located on the optical axis Ax3. The third opening 742Ca is located above the optical axis Ax3.

The first opening 742Aa to the third opening 742Ca are all formed to have an opening shape in which the horizontal width is larger than the vertical width. Specifically, the first opening 742Aa to the third opening 742Ca are all formed to have a V-shaped opening when viewed from the front of the lamp.

The first opening 742Aa, the second opening 742Ba, and the third opening 742Ca are formed such that the vertical width of the opening gradually increases in this order. The vertical distance between the first opening 742Aa, the second opening 742Ba, and the third opening 742Ca is formed to gradually increase in this order. Further, the first opening 742Aa to the third opening 742Ca are formed such that their respective inner peripheral edges on both left and right sides extend upward in a direction slightly expanding with respect to the vertical direction. The first opening 742Aa to the third opening 742Ca are formed such that their inner peripheral edges on both left and right sides are located on the same pair of left and right imaginary straight lines.

The first cylindrical part 744A, the second cylindrical part 744B, and the third cylindrical part 744C have inner peripheral surfaces 744Aa, 744Ba, and 744Ca that are connected to the first opening 742Aa, the second opening 742Ba, and the third opening 742Ca. It is formed to extend flush. At this time, the inner circumferential surfaces 744Aa to 744Ca of the first to third cylindrical portions 744A to 744C are formed as reflective surfaces whose cross-sectional shapes become smaller toward the rear of the lamp. Specifically, the inner circumferential surfaces 744Aa to 744Ca of the first to third cylindrical portions 744A to 744C are subjected to a reflective surface treatment such as vacuum evaporation of aluminum.

The rear end openings 744Ab, 744Bb, and 744Cb of the first cylindrical portion 744A, the second cylindrical portion 744B, and the third cylindrical portion 744C are all formed to have a V-shaped opening shape.

The light shielding plate 740 is positioned at both left and right end portions of the main body portion 742 so as to be in contact with a pair of left and right mounting flanges 736 of the projection lens 730 from the rear side of the lamp.

The first light emitting element 720A, the second light emitting element 720B, and the third light emitting element 720C are arranged to be located on the rear side of the lamp of the first cylindrical part 744A, the second cylindrical part 744B, and the third cylindrical part 744C. has been done.

That is, the first light emitting element 720A is arranged so as to face the rear end opening 744Ab of the first cylindrical portion 744A on the lower side of the optical axis Ax3. The second light emitting element 720B is arranged on the optical axis Ax so as to face the rear end opening 744Bb of the second cylindrical portion 744B. The third light emitting element 720C is arranged so as to face the rear end opening 744Cb of the third cylindrical portion 744C on the upper side of the optical axis Ax3.

As shown in FIGS. 27 and 28, the light emitted from the first light emitting element 720A, the second light emitting element 720B, and the third light emitting element 720C is The light enters the shaped portion 744C through rear end openings 744Ab, 744Bb, and 744Cb. The light incident on the first cylindrical part 744A, the second cylindrical part 744B, and the third cylindrical part 744C is reflected by the inner circumferential surfaces 744Aa, 744Ba, and 744Ca, and then is reflected by the first opening 742Aa and the third cylindrical part 742A of the main body part 742. After being guided to the second opening 742Ba and the third opening 742Ca, the light enters the lens body 732 of the projection lens 730 as it is. The inner circumferential surfaces 744Aa to 744Ca of the first to third cylindrical portions 744A to 744C are formed such that their cross-sectional shapes become smaller toward the rear of the lamp. Therefore, the light emitted from the first light emitting element 720A to the third light emitting element 720C is easily guided to the first opening 742Aa to the third opening 742Ca.

The first light emitting element 720A to the third light emitting element 720C are connected to an electronic control unit (not shown), and the electronic control unit performs lighting/extinguishing control according to vehicle running conditions and the like.

The heat sink 760 includes a main body 762 extending along a vertical plane perpendicular to the front-rear direction of the lamp, a plurality of radiation fins 764 extending along the vertical plane from the main body 762 toward the rear of the lamp, and left and right sides of the main body 762. A pair of mounting flanges 766 are formed on both sides.

The board 722 is positioned and supported by tightening the screws 752 at two diagonal locations while being in surface contact with the main body 762 of the heat sink 760 .

Furthermore, the projection lens 730 and the light shielding plate 740 are positioned and supported by tightening screws 754 at two diagonal locations on the pair of right and left mounting flanges 766 of the heat sink 760. This screw tightening is performed by co-tightening the pair of left and right mounting flanges 736 of the projection lens 730 and both left and right ends of the light shielding plate 740 overlapping the pair of left and right mounting flanges 766 of the heat sink 760. ing. Note that positioning pins 736a are formed on the pair of left and right mounting flanges 736 of the projection lens 730, respectively, and on the other hand, the left and right ends of the main body 742 of the light shielding plate 740 and the pair of left and right mounting flanges of the heat sink 760

Pin insertion holes

742e and 766a are formed in the portion 766, respectively, into which the positioning pin 736a is inserted.

Next, the drawing light distribution pattern PA3 shown in FIGS. 30 and 31 will be described.

As described above, the drawing light distribution pattern PA is formed by the irradiation light from the drawing lamp 710. As shown in FIGS. 30 and 31, the drawing light distribution pattern PA is composed of three first drawing light distribution patterns PAa3, second drawing light distribution patterns PAb3, and third drawing light distribution patterns PAc3. .

The three first drawing light distribution patterns PAa3 to third drawing light distribution patterns PAc3 are all light distribution patterns in an inverted V shape (that is, a shape pointed toward the front of the lamp). The three first drawing light distribution patterns PAa3 to third drawing light distribution patterns PAc3 have approximately the same size and are arranged in series at approximately equal intervals, and are arranged in a long distance area, a middle area, and a middle area, respectively, on the road surface 702 in front of the vehicle. It is formed in the distance area and short distance area.

The first drawing light distribution pattern PAa3 formed in the long distance area is a light distribution pattern formed by emitting light from the first light emitting element 720A toward the front of the lamp via the projection lens 730. be. The second drawing light distribution pattern PAb formed in the middle distance region is a light distribution pattern formed by emitting light from the second light emitting element 720B toward the front of the lamp via the projection lens 730. be. The third drawing light distribution pattern PAc formed in the short distance area is a light distribution pattern formed by emitting light from the third light emitting element 720C toward the front of the lamp via the projection lens 730. be.

The first drawing light distribution pattern PAa3 is formed as an inverted projection image of the first opening 742Aa formed in the main body portion 742 of the light shielding plate 740 so as to have a V-shaped opening shape. The first opening 742Aa is located below the optical axis Ax3 of the projection lens 730. Therefore, the light emitted from the first light emitting element 720A is emitted toward the front of the lamp as light directed upward from the optical axis Ax3. Thereby, the first drawing light distribution pattern PAa3 is formed in a long distance area.

The second drawing light distribution pattern PAb3 is formed as an inverted projection image of the second opening 742Ba, which is formed to have a V-shaped opening shape in the main body 742 of the light shielding plate 740. The second opening 742Ba is located on the optical axis Ax3 of the projection lens 730. Therefore, the light emitted from the second light-emitting element 720B is irradiated toward the front of the lamp as light approximately parallel to the optical axis Ax3. As a result, the second drawing light distribution pattern PAb3 is formed in the mid-distance region.

The third drawing light distribution pattern PAc3 is formed as an inverted projection image of the third opening 742Ca formed in the main body portion 742 of the light shielding plate 740 so as to have a V-shaped opening shape. This third opening 742Ca is located above the optical axis Ax3 of the projection lens 730. Therefore, the light emitted from the third light emitting element 720C is emitted toward the front of the lamp as light directed downward from the optical axis Ax3. Thereby, the third drawing light distribution pattern PAc3 is formed in the short distance area.

At this time, the light emitted from the first light emitting element 720A to the third light emitting element 720C is efficiently guided to the first opening 742Aa to the third opening 742Ca by the first cylindrical part 744A to the third cylindrical part 744C. . Therefore, sufficient brightness of the first drawing light distribution pattern PAa3 to the third drawing light distribution pattern PAc3 is ensured.

The vertical widths of the first opening 740Aa, the second opening 740Ba, and the third opening 740Ca increase in this order. In addition, the inner peripheral edges on both left and right sides of the first opening 740Aa, the second opening 740Ba, and the third opening 740Ca are formed to extend upward in a direction slightly expanding with respect to the vertical direction. The inner peripheral edges on both right sides of the first opening 740Aa, the second opening 740Ba, and the third opening 740Ca are located on the same pair of left and right imaginary straight lines. Therefore, the three first drawing light distribution patterns PAa3 to third drawing light distribution patterns PAc3 are formed to have substantially the same size.

Next, the operation of this embodiment will be explained.

The drawing lamp 710 according to the present embodiment distributes light for drawing by irradiating the light emitted from the first light emitting element 720A to the third light emitting element 720C toward the front of the lamp via the light shielding plate 740 and the projection lens 730. It is configured to form a pattern PA. The light shielding plate 740 includes a main body portion 742 in which a first opening 742Aa to a third opening 742Ca are formed for allowing the light emitted from the first light emitting element 720A to the third light emitting element 720C to enter the projection lens 730; A first cylindrical portion 744A to a third cylindrical portion 744C extend from the main body portion 742 in a cylindrical shape toward the rear of the lamp so as to surround the first opening 742Aa to the third opening 742Ca. Inner peripheral surfaces 744Aa to 744Ca of the first to third cylindrical portions 744A to 744C are formed as reflective surfaces whose cross-sectional shapes become smaller toward the rear of the lamp. The first light emitting element 720A to the third light emitting element 720C are arranged to be located behind the lamps of the first cylindrical part 744A to the third cylindrical part 744C.

The light emitted from the first light emitting element 720A to the third light emitting element 720C and entering the projection lens 730 through the first opening 742Aa to the third opening 742Ca of the light shielding plate 740 is transmitted through the first opening 742Aa to the third opening 742Ca, respectively. As an inverted projection image of the third opening 742Ca, a drawing light distribution pattern PA consisting of the first drawing light distribution pattern PAa3 to the third drawing light distribution pattern PAc3 can be formed.

In addition, the light shielding plate 740 has first to third cylindrical parts that protrude toward the rear of the lamp so as to surround the first to third openings 742Aa to 742Ca formed in the main body part 742. A portion 744C is formed. Inner peripheral surfaces 744Aa to 744Ca of the first to third cylindrical portions 744A to 744C are formed as reflective surfaces. Therefore, the light emitted from the first light emitting element 720A to the third light emitting element 720C can be guided to the first opening 742Aa to the third opening 742Ca directly or after being reflected by the inner peripheral surfaces 744Aa to 744Ca. . The inner circumferential surfaces 744Aa to 744Ca of the first to third cylindrical portions 744A to 744C are formed so that their cross-sectional shapes become smaller toward the rear of the lamp. Therefore, the light emitted from the first light emitting element 720A to the third light emitting element 720C is guided to the first opening 742Aa to the third opening 742Ca, and then enters the projection lens 730 more easily. Thereby, the drawing light distribution pattern PA3 can be efficiently formed.

As described above, according to the present embodiment, the drawing light distribution pattern PA3 can be efficiently formed in the drawing lamp 710 configured to form the drawing light distribution pattern PA3. Thereby, the effect of alerting the surroundings can be enhanced.

The first opening 742Aa to the third opening 742Ca of the light shielding plate 740 are formed to have an opening shape in which the horizontal width is larger than the vertical width. The inner circumferential surfaces 744Aa to 744Ca of the first cylindrical portion 744A to the third cylindrical portion 744C are formed so that the rate of decrease in the horizontal width toward the rear of the lamp is greater than the rate of decrease in the vertical width.

The opening shapes of the first opening 742Aa to the third opening 742Ca are formed so that the horizontal width is larger than the vertical width. The first drawing light distribution pattern PAa3 to the third drawing light distribution pattern PAc3 constituting the drawing light distribution pattern PA3 can be formed as horizontally elongated light distribution patterns that are easy to visually recognize. Thereby, the effect of alerting the surroundings can be enhanced.

In addition, the inner circumferential surfaces 744Aa to 744Ca of the first to third cylindrical portions 744A to 744C are formed such that the rate of decrease in the horizontal width toward the rear of the lamp is greater than the rate of decrease in the vertical width. ing. Therefore, the emitted light from the first light emitting element 720A to the third light emitting element 720C reflected by the inner circumferential surfaces 744Aa to 744Ca is guided to the first opening 742Aa to the third opening 742Ca as light with substantially uniform brightness. It will be destroyed. This makes it possible to form the first drawing light distribution pattern PAa3 to the third drawing light distribution pattern PAc3 with substantially uniform brightness.

In this case, the first opening 742Aa to the third opening 742Ca are formed to have a V-shaped opening shape. Therefore, the light emitted from the first light emitting element 720A to the third light emitting element 720C and passing through the first opening 742Aa to the third opening 742Ca has an inverted V shape (i.e., a sharp point toward the front of the lamp) as an inverted projected image. A first drawing light distribution pattern PAa3 to a third drawing light distribution pattern PAc3 are formed. Thereby, the effect of alerting the surroundings can be further enhanced.

In addition, the light shielding plate 740 has a circular region 742d formed on the front surface of its main body 742, extending along a concave curved surface C3 that includes the rear focal point F of the projection lens 730. Therefore, the first drawing light distribution pattern PAa3 to the third drawing light distribution pattern PAc3 can be formed as light distribution patterns having clear outlines.

Further, in the light shielding plate 740, a first opening 742Aa to a third opening 742Ca and a first cylindrical part 744A to a third cylindrical part 744C are formed at intervals in the vertical direction. A first light emitting element 720A to a third light emitting element 720C are arranged for each of the first opening 742Aa to the third opening 742Ca and the first cylindrical part 744A to the third cylindrical part 744C. Therefore, the three first drawing light distribution patterns PAa3 to third drawing light distribution patterns PAc3 can be efficiently formed in series. Thereby, the effect of alerting the surroundings can be further enhanced.

In this embodiment, the first opening 742Aa to the third opening 742Ca formed in the light shielding plate 740 are all formed to have a V-shaped opening shape. However, the first opening 742Aa to the third opening 742Ca may be formed to have an opening shape other than this (for example, an opening shape such as a downward arrow or an inverted trapezoid).

In the present embodiment, the inner peripheral surfaces 744Aa to 744Ca of the first to third cylindrical portions 744A to 744C formed on the light shielding plate 740 are subjected to reflection treatment, so that the inner peripheral surfaces 744Aa to 744Ca are It is formed as a reflective surface. However, the inner circumferential surfaces 744Aa to 744Ca may be formed as reflective surfaces by forming the light shielding plate 740 with a white resin molded product with high surface reflectance.

In the present embodiment, the first light emitting element 720A to the third light emitting element 720C have been described as emitting white light, but other light emitting colors (for example, amber color, red, etc.) may be employed.

In the present embodiment, the drawing lamp 710 is mounted on the front end of the vehicle 800 at the side end in the vehicle width direction, but it may also be mounted on the rear end, side surface, etc. of the vehicle 800.

In this embodiment, a drawing light distribution pattern PA is formed on the road surface 702 in front of the vehicle by the irradiation light from the drawing lamp 710. However, the drawing light distribution pattern may be formed on a wall surface disposed in front of the lamp, a wall surface extending toward the front of the lamp, or the like.

Next, a modification of the third embodiment will be described.

FIG. 32 is a front view of a drawing lamp 810 according to a modification of the third embodiment. FIG. 32 is a diagram of the drawing lamp 810 viewed from the same direction as FIG. 26. FIG. 33 is a sectional view of a drawing lamp 810 according to a modification of the third embodiment. FIG. 33 is a diagram of the drawing lamp 810 viewed from the same direction as FIG. 28.

As shown in FIGS. 32 and 33, the basic configuration of this modification is the same as that of the third embodiment, but the configuration of the light shielding plate 840 is partially different from that of the third embodiment. Accordingly, the arrangement of the first to third light emitting elements 720A to 720C is partially different from that of the third embodiment.

In the light shielding plate 840 of this modification, the shape and arrangement of the first opening 842Aa, second opening 842Ba, and third opening 842Ca formed in the main body portion 842 are the same as in the third embodiment. However, the first cylindrical part 844A, the second cylindrical part 844B, and the third cylindrical part 844C are formed to extend toward the rear of the lamp at different angles of inclination with respect to the vertical direction. This is different from the case of the embodiment.

Specifically, the shape of the second cylindrical portion 844B is similar to the second cylindrical portion 744B of the third embodiment. However, the first cylindrical portion 844A is formed to extend further downward toward the rear of the lamp than the first cylindrical portion 744A of the third embodiment. The third cylindrical portion 844C is formed to extend upward toward the rear of the lamp compared to the third cylindrical portion 744C of the third embodiment.

Furthermore, in this modification, the light shielding plate 840 is configured by vertically stacking three light

shielding plate components

840A, 840B, and 840C.

That is, in the light shielding plate 840 of this modification, the main body portion 842 is connected to three light

shielding plate components

840A, 840B, and 840C with the lower end position of the first opening 842Aa and the upper end position of the third opening 842Ca as the border. It consists of being divided. At this time, the light shielding plate component 840A located at the lowermost side is formed into a substantially U-shape. The light

shielding plate components

840B and 840C are supported so as to be fitted into the light shielding plate component 840A from above.

Note that the cross-sectional shapes of the inner circumferential surfaces 844Aa, 844Ba, and 844Ca of the first cylindrical portion 844A, the second cylindrical portion 844B, and the third cylindrical portion 844C are the same as in the third embodiment. The shapes of the rear end openings 844Ab, 844Bb, and 844Cb of the first cylindrical portion 844A, the second cylindrical portion 844B, and the third cylindrical portion 844C are also the same as in the third embodiment. Furthermore, the circular region 842d of the main body portion 842 is also formed to extend along the concave curved surface C3 similar to the case of the third embodiment.

Also in this modified example, the first light-emitting element 720A, the second light-emitting element 720B, and the third light-emitting element 720C are arranged so as to be located behind the lamp of the first cylindrical portion 844A, the second cylindrical portion 844B, and the third cylindrical portion 844C. The first cylindrical portion 844A to the third cylindrical portion 844C are formed so as to extend toward the rear of the lamp at different vertical inclination angles. The first light-emitting element 720A is displaced slightly upward compared to the third embodiment. The third light-emitting element 720C is displaced slightly downward compared to the third embodiment.

By employing the configuration of this modification, the first light emitting element 720A to the third The light emitted from the light emitting element 720C can be easily made to enter the central region of the projection lens 730 near the optical axis Ax3. This improves the accuracy of deflection control by the projection lens 730.

Further, as in this modification, the structure of the light shielding plate 840 is such that three light

shielding plate components

840A, 840B, and 840C are stacked in the vertical direction, so that the first to third cylindrical portions 844A to 844C are The degree of freedom in shape can be increased.

Specifically, in the light shielding plate 840 of this modification, the first to third cylindrical portions 844A to 844C extend toward the rear of the lamp at different angles of inclination with respect to the vertical direction.

That is, if the light shielding plate 840 of this modification is molded as a single member, an undercut will occur, which is difficult to realize.

On the other hand, by stacking the three light shielding plate components 840A to 840C in the light shielding plate 840, it becomes possible to easily mold each of them. Thereby, the degree of freedom in the shape of the first to third cylindrical portions 844A to 844C can be increased.

The drawing lamp according to the third embodiment may be an in-vehicle lamp, or may be a lamp used for purposes other than in-vehicle use.

The specific arrangement and shape of the opening are not particularly limited as long as the opening is formed so that the light emitted from the light emitting element is incident on the projection lens.

The cylindrical portion extends cylindrically from the main body toward the rear of the lamp, surrounding the opening, but does not necessarily have to be formed to completely surround the opening.

The specific shape of the inner circumferential surface of the cylindrical portion is not particularly limited as long as it is formed as a reflective surface whose cross-sectional shape becomes smaller toward the rear of the lamp. Further, the reflective surface of the inner circumferential surface may be configured by being subjected to reflective surface treatment, or may be configured by a surface with high reflectance such as a white smooth surface. Good too.

Note that the numerical values shown as specifications in the first embodiment to the third embodiment and their modifications are merely examples, and it goes without saying that these may be set to different values as appropriate.

Further, the present disclosure is not limited to the configurations described in the first embodiment to the third embodiment and their modifications, and configurations with various changes other than these can be adopted.

This application is a Japanese patent application filed on September 21, 2022 (Japanese Patent Application No. 2022-150309), a Japanese patent application filed on September 21, 2022 (Japanese Patent Application No. 2022-150310), The content disclosed in the Japanese patent application (Japanese Patent Application No. 2022-182184) filed on November 14, 2022 is appropriately incorporated.

Claims

In a drawing lamp configured to form a drawing light distribution pattern by irradiating light emitted from a light emitting element toward the front of the lamp through a projection lens,
A light-shielding plate is disposed between the light-emitting element and the projection lens to block a part of the light directed from the light-emitting element to the projection lens,
The light shielding plate has an opening formed in a V-shaped opening shape,
A condensing lens for condensing light emitted from the light emitting element toward the opening is disposed between the light emitting element and the light shielding plate,
In the drawing lamp, the condenser lens is formed to extend in a V-shape so as to overlap the opening when viewed from the front of the lamp.
The drawing lamp according to claim 1, wherein the light emitting element has a rectangular light emitting surface, and the light emitting surface is arranged so as to appear diamond-shaped when the lamp is viewed from the front.
The drawing lamp according to claim 1 or 2, wherein the light emitting elements are arranged in three locations in a V-shape arrangement.
The drawing lamp according to claim 3, wherein the condenser lens is configured to direct the light emitted from the light emitting elements arranged at the three locations in a direction toward each other.
The drawing lamp according to claim 1 or 2, wherein the openings are formed at multiple locations at intervals in the vertical direction.
In a drawing lamp configured to form a drawing light distribution pattern by irradiating light emitted from a light emitting element toward the front of the lamp through a projection lens,
A light-shielding plate is disposed between the light-emitting element and the projection lens to block a part of the light directed from the light-emitting element to the projection lens,
The projection lens has a configuration in which the first and second projection lens portions are arranged side by side in a required direction intersecting the front-rear direction of the lamp,
A plurality of openings are formed in the light shielding plate,
The light shielding plate includes, as the plurality of openings, a plurality of first openings arranged at intervals in a direction intersecting the required direction on the rear side of the lamp of the first projection lens section, and a plurality of first openings arranged at intervals in a direction intersecting the required direction. and at least one second opening disposed on the rear side of the lamp of the lens part,
The light emitting element includes a first light emitting element disposed on the rear side of the lamp of the plurality of first openings, and a second light emitting element disposed on the rear side of the lamp of the at least one second opening. Ori,
each of the plurality of first drawing light distribution patterns formed by the light emitted from the first light emitting element that enters the first projection lens section through the plurality of first openings; Each of the at least one second drawing light distribution pattern formed by the light emitted from the second light emitting element that enters the second projection lens part through the second opening is arranged alternately in series. The drawing lamp, wherein the arrangement of the first projection lens section and the plurality of first openings and the arrangement of the second projection lens section and the at least one second opening are set so that
The drawing lamp according to claim 6, wherein a direction intersecting the required direction is set to an up-down direction.
The drawing lamp according to claim 7, wherein each of the plurality of first openings and the at least one second opening are formed to have a V-shaped opening shape.
A first condensing lens for condensing light emitted from the first light emitting element toward the plurality of first openings is disposed between the first light emitting element and the light shielding plate,
A second condensing lens for condensing light emitted from the second light emitting element toward the at least one second opening is disposed between the second light emitting element and the light shielding plate. , The drawing lamp according to claim 6 or 7.
The first light emitting element is arranged at a position corresponding to each of the plurality of first openings,
The drawing lamp according to claim 6 or 7, wherein the second light emitting element is arranged at a position corresponding to each of the at least one second opening.
In a drawing lamp configured to form a drawing light distribution pattern by irradiating light emitted from a light emitting element toward the front of the lamp through a projection lens,
A light-shielding plate is disposed between the light-emitting element and the projection lens for blocking a part of the light traveling from the light-emitting element to the projection lens,
The light shielding plate includes a main body in which an opening is formed for allowing light emitted from the light emitting element to enter the projection lens, and a cylindrical shape extending from the main body toward the rear of the lamp so as to surround the opening. It is equipped with a cylindrical part,
The inner peripheral surface of the cylindrical portion is formed as a reflective surface whose cross-sectional shape becomes smaller toward the rear of the lamp,
A drawing lamp, wherein the light emitting element is arranged to be located behind the lamp of the cylindrical part.
The opening is formed so that the horizontal width is larger than the vertical width,
12. The drawing lamp according to claim 11, wherein the inner circumferential surface of the cylindrical portion is formed such that the rate of decrease in horizontal width is greater than the rate of decrease in vertical width toward the rear of the lamp.
The drawing lamp according to claim 12, wherein the opening is formed to have a V-shaped opening.
The drawing lamp according to claim 11 or 12, wherein the light shielding plate is formed such that the front surface of the main body extends along a concave curved surface that includes a rear focal point of the projection lens.
The light blocking plate is configured such that the openings and the cylindrical portions are formed at a plurality of locations at intervals in the up-down direction,
The drawing lamp according to claim 11 or 12, wherein the light emitting element is disposed at each of the plurality of locations.
The drawing lamp according to claim 15, wherein the cylindrical portion is formed to extend toward the rear of the lamp at different vertical inclination angles at each of the plurality of locations.
The drawing lamp according to claim 15, wherein the light shielding plate has a structure in which a plurality of light shielding plate components are stacked vertically.