Drawing lamp

Abstract

To provide a drawing lamp 10 for forming a light distribution pattern for drawing, capable of enhancing an attention calling function to the surroundings.SOLUTION: In addition to a configuration in which light emitted from a light-emitting element 20 is irradiated toward the front of a lamp via a projection lens 50, a light-shielding control member 40 for shielding a part of light directed from the light-emitting element 20 to the projection lens 50 is arranged. The projecting lens 50 is constituted by integrally forming a pair of right and left projecting lens body parts 52L, 52R disposed in a direction inclined to both right and left sides with respect to the front direction of the lamp. The light-shielding control member 40 has a configuration in which a pair of left and right light-shielding control member main body portions 42L and 42R disposed in directions inclined to both the left and right sides with respect to the lamp front direction are integrally formed, and opening portions 42La, 42Lb, 42Lc, 42Ra, 42Rb, and for causing the light emitted from the light-emitting elements 20 to be incident on each of the pair of left and right projection-lens main body portions 52L and 52R are formed in each of the light-shielding control member main body portions. 42Rc.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a drawing lighting fixture configured to form a drawing light distribution pattern. [Background technology]

[0002] Conventionally, drawing lamps for forming a drawing light distribution pattern (i.e., a light distribution pattern for drawing letters, symbols, etc. on the road surface in front of the lamp) have been known that are configured to irradiate light emitted from a light-emitting element toward the front of the lamp via a projection lens.

[0003] Patent Document 1 describes a configuration of an in-vehicle drawing lamp in which a light blocking plate is arranged between a light-emitting element and a projection lens to block a portion of the light traveling from the light-emitting element to the projection lens, and a light distribution pattern for drawing is formed by allowing the light emitted from the light-emitting element to enter the projection lens through an opening formed in the light blocking plate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2024-71308 Summary of the Invention [Problem to be solved by the invention]

[0005] By using the light emitted from such an in-vehicle drawing lamp to form a drawing light distribution pattern on the road surface in front of the lamp, the vehicle's intentions can be communicated to those around it when driving at night, thereby making it possible to alert other drivers of vehicles, pedestrians, etc.

[0006] The drawing lamp described in the above-mentioned "Patent Document 1" is configured to form a drawing light distribution pattern in one direction on the road surface in front of the lamp, but further improvements are desired to enhance its function of calling attention to those in the surrounding area.

[0007] It should be noted that such problems may also occur in drawing lamps other than those for vehicles.

[0008] The present invention has been made in consideration of the above circumstances, and aims to provide a drawing lighting fixture that is configured to form a drawing light distribution pattern and that can enhance the function of calling attention to those in the surrounding area. [Means for solving the problem]

[0009] The present invention is intended to achieve the above object by devising the configuration of the projection lens and the light blocking control member.

[0010] That is, the drawing lamp according to the present invention is: A drawing lamp configured to form a drawing light distribution pattern by irradiating light emitted from a light-emitting element forward through a projection lens, a light blocking control member is disposed 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 projection lens is configured as an integral unit consisting of a pair of left and right projection lens bodies arranged in a direction inclined on both the left and right sides relative to the front of the lamp, The light-blocking control member is characterized in that it is configured such that a pair of left and right light-blocking control member main bodies are integrally formed and arranged in directions inclined on both the left and right sides relative to the front direction of the lamp, and that each of the pair of left and right light-blocking control member main bodies is formed with a translucent portion for allowing light emitted from the light-emitting element to enter each of the pair of left and right projection lens main bodies.

[0011] The "drawing lamp" may be a lamp for use in a vehicle, or may be a lamp for use in a non-vehicle application.

[0012] The above-mentioned "projection lens" is configured as a pair of left and right projection lens main bodies that are integrally formed and arranged in directions inclined on both the left and right sides relative to the front direction of the lamp fixture, and the specific configuration and inclination angle of each of them are not particularly limited.

[0013] The "light blocking control member" is not particularly limited in its specific configuration as long as it is configured to block a portion of the light traveling from the light emitting element to the projection lens.

[0014] The specific configuration and inclination angle of each of the above-mentioned "pair of left and right shading control member main bodies" are not particularly limited as long as they are arranged in a direction inclined to both the left and right sides with respect to the front direction of the lamp fixture.

[0015] The specific configuration and light-transmitting shape of the above-mentioned "light-transmitting portion" are not particularly limited, as long as it is configured to allow the light emitted from the light-emitting element to be incident on each of the pair of left and right projection lens main body portions. [Effects of the Invention]

[0016] The drawing lighting fixture of the present invention is configured to form a drawing light distribution pattern by irradiating light emitted from a light-emitting element toward the front of the lighting fixture through a projection lens, and in this case, a shading control member is arranged between the light-emitting element and the projection lens to block a portion of the light traveling from the light-emitting element toward the projection lens.The projection lens is configured to be integrally formed with a pair of left and right projection lens main body portions arranged in directions inclined on both the left and right sides with respect to the front direction of the lighting fixture, and the shading control member is configured to be integrally formed with a pair of left and right shading control member main body portions arranged in directions inclined on both the left and right sides with respect to the front direction of the lighting fixture, and each of the pair of left and right shading control member main body portions is formed with a translucent portion to allow light emitted from the light-emitting element to enter each of the pair of left and right projection lens main body portions, so that the following functional effects can be obtained.

[0017] That is, by making the light emitted from the light-emitting element incident on the pair of left and right projection lens main bodies of the projection lens through the light-transmitting portions formed in each of the pair of left and right shading control member main bodies of the shading control member, a pair of left and right drawing light distribution patterns extending in directions inclined to both the left and right with respect to the front direction of the lamp can be formed as drawing light distribution patterns. Therefore, other vehicle drivers, pedestrians, etc. can easily recognize their own distance from the drawing lamp by visually checking the change in the spacing between the pair of left and right drawing light distribution patterns. This can enhance the function of calling the attention of other vehicle drivers, pedestrians, etc.

[0018] Moreover, by forming a pair of left and right drawing light distribution patterns as drawing light distribution patterns using light emitted from a single drawing lamp in this manner, the following effects can be obtained.

[0019] That is, if a pair of left and right drawing light distribution patterns were formed by light irradiated from a pair of left and right drawing lamps, it would not be easy to ensure sufficient accuracy in the positional relationship between these pair of left and right drawing light distribution patterns. In contrast, by using a configuration in which a pair of left and right drawing light distribution patterns are simultaneously formed by light irradiated from a single drawing lamp, it becomes easy to ensure sufficient accuracy in the positional relationship between the two.

[0020] According to the present invention, a lighting fixture for drawing that is configured to form a light distribution pattern for drawing can enhance the function of calling attention to those in the surroundings. Moreover, this can be achieved with a simple lighting fixture configuration.

[0021] In the above configuration, if the translucent portions are formed at multiple locations spaced apart in the vertical direction, each of the pair of left and right drawing light distribution patterns can be formed at multiple locations in the fore-and-aft direction of the lamp on the road surface in front of the lamp, thereby further enhancing the function of drawing attention to those in the surrounding area.

[0022] In the above configuration, if the projection lens configuration is such that each of the pair of left and right projection lens main bodies is arranged in a state inclined downward with respect to the front direction of the lamp, and if the light shading control member configuration is such that each of the pair of left and right light shading control member main bodies is arranged in a state inclined downward with respect to the front direction of the lamp, the brightness and clarity of the pair of left and right drawing light distribution patterns can be improved.

[0023] In the above configuration, if the light-blocking control member is further configured as a light-blocking plate having openings formed as light-transmitting portions in each of a pair of left and right light-blocking control member main bodies, a pair of left and right light distribution patterns for drawing can be formed with a simple configuration.

[0024] In this case, if each of the pair of left and right shading control member main bodies is configured to extend in a convex curve toward the rear of the lamp when viewed in a plane, it becomes easy to make them correspond to the image plane curvature of each of the pair of left and right projection lens main bodies, thereby making it possible to form each of the pair of left and right drawing light distribution patterns as light distribution patterns with clear contours on both the left and right sides.

[0025] In this case, the configuration is provided with a reflector that reflects the light emitted from the light-emitting element toward the projection lens, and this reflector is configured to have a pair of left and right reflective surfaces formed to cover the light-emitting element from above, and each of these pair of left and right reflective surfaces is configured to reflect the light emitted from the light-emitting element as convergent light toward the openings formed in each of the pair of left and right shading control member main body portions, thereby improving the utilization efficiency of the light emitted from the light-emitting element. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a cross-sectional plan view showing a drawing lamp according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view showing the main components of the drawing lamp as viewed from the front and diagonally above the lamp. [Figure 3] Cross section of line III-III in Figure 1 [Figure 4] FIG. 1 is a plan view showing the drawing lamp mounted on a vehicle. [Figure 5] FIG. 1 is a side view showing the drawing lamp mounted on a vehicle. [Figure 6] FIG. 4 is a view similar to FIG. 3, illustrating a modification of the embodiment. [Figure 7] FIG. 5 is a diagram similar to FIG. 4, illustrating the above modification. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0028] Fig. 1 is a plan cross-sectional view showing a drawing lamp 10 according to an embodiment of the present invention. Fig. 2 is a perspective view showing the main components of the drawing lamp 10 as seen from diagonally above the front of the lamp, and Fig. 3 is a cross-sectional view taken along line III-III in Fig. 1. Figs. 4 and 5 are a plan view and a side view showing the drawing lamp 10 mounted on a vehicle 100.

[0029] 1 to 5, the direction indicated by X is "forward of the lamp" ("rearward" from the vehicle's perspective), the direction indicated by Y is "leftward" ("rightward" when viewed from the front of the lamp, "rightward" from the vehicle's perspective) perpendicular to "forward of the lamp", and the direction indicated by Z is "upward". This is the same in other figures as well.

[0030] Before describing the specific configuration of the drawing lamp 10 according to this embodiment, an outline thereof will be described.

[0031] As shown in FIGS. 4 and 5, the drawing lamp 10 is mounted at the center of the rear end of the vehicle 100 in the vehicle width direction, and is configured to emit light obliquely downward toward the rear of the vehicle.

[0032] Specifically, the drawing lamp 10 is configured to light up in synchronization with the illumination of the backup lamps (not shown) when the vehicle is backing up, as shown by the arrow in the figure, and to form a pair of left and right drawing light distribution patterns PL, PR on the road surface in front of the lamp (i.e., the road surface behind the vehicle) 2 with its emitted light (details of these will be described later).

[0033] Next, a specific configuration of the drawing lamp 10 will be described.

[0034] As shown in FIGS. 1 to 3, the drawing lamp 10 has a bilaterally symmetrical configuration.

[0035] That is, the drawing lamp 10 is configured such that, within a lamp chamber formed by a lamp body 12 and a projection lens 50 attached to its front end opening, there are incorporated a light emitting element 20 as a light source, a reflector 30 for reflecting light emitted from the light emitting element 20 toward the projection lens 50, and a light blocking control member 40 for blocking part of the light emitted from the light emitting element 20 that has been reflected by the reflector 30. A body adapter 14 is attached to the top of the front end opening of the lamp body 12, and the top of the projection lens 50 is attached to the front end opening of this body adapter 14.

[0036] The light emitting element 20 is a white light emitting diode, and is mounted on a substrate 22 with its light emitting surface 20 a facing upward, and is supported by the lamp body 12 via this substrate 22 .

[0037] The projection lens 50 is configured to have a pair of left and right projection lens bodies 52L, 52R integrally formed and arranged in directions inclined on both the left and right sides with respect to the front direction of the lamp. In this projection lens 50, each of the pair of left and right projection lens bodies 52L, 52R is arranged in a state inclined downward with respect to the front direction of the lamp.

[0038] Specifically, the left projection lens main body 52L is disposed so that its optical axis AxL extends in a direction tilted leftward by about 10 to 20 degrees (for example, about 15 degrees) with respect to the front direction of the lamp, and the right projection lens main body 52R is disposed so that its optical axis AxR extends in a direction tilted rightward by about 10 to 20 degrees (for example, about 15 degrees) with respect to the front direction of the lamp.The pair of left and right projection lens main bodies 52L, 52R are disposed so that their optical axes AxL, AxR extend in a direction tilted downward by about 10 to 20 degrees (for example, about 15 degrees) with respect to the front direction of the lamp.

[0039] Each of the pair of left and right projection lens bodies 52L, 52R is configured as a plano-convex lens with its front surfaces 52La, 52Ra formed as convex curved surfaces and its rear surfaces 52Lb, 52Rb formed as flat surfaces. Each of the pair of left and right projection lens bodies 52L, 52R has an outer shape in which both the upper and lower ends are cut out to form flat surfaces.

[0040] The projection lens 50 includes a central connecting portion 54 formed in a flat plate shape midway between the pair of left and right projection lens main bodies 52L, 52R, and a pair of left and right side end flange portions 56 formed in a flat plate shape on both sides of the pair of left and right projection lens main bodies 52L, 52R. The projection lens 30 is supported by the lamp body 12 and the body adapter 14 at the rear end of its outer periphery.

[0041] The light-blocking control member 40 is configured to have a pair of left and right light-blocking control member main bodies 42L, 42R integrally formed therewith and arranged in directions inclined on both the left and right sides with respect to the front direction of the lamp. Furthermore, in this light-blocking control member 40, each of the pair of left and right light-blocking control member main bodies 42L, 42R is arranged in a state inclined downward with respect to the front direction of the lamp. The inclination angle of each of the pair of left and right light-blocking control member main bodies 42L, 42R with respect to the front direction of the lamp is set to the same value as the inclination angle of each of the pair of left and right projection lens main bodies 52L, 52R with respect to the front direction of the lamp.

[0042] The light-blocking control member 40 is made up of a thin light-blocking plate with a constant thickness, and each of the pair of left and right light-blocking control member main bodies 42L, 42R is formed to extend in a convex curve toward the rear of the lamp in a plan view. The curvature of this convex curve is set to a value that approximately matches the magnitude of the field curvature of each of the pair of left and right projection lens main bodies 52L, 52R.

[0043] Each of the pair of left and right light blocking control member main bodies 42L, 42R has two left and right sets of openings 42La, 42Lb, 42Lc, 42Ra, 42Rb, and 42Rc formed as light transmitting sections for transmitting light emitted from the light emitting element 20 and reflected by the reflector 30. Specifically, the left light blocking control member main body 42L has three openings 42La, 42Lb, and 42Lc formed at three locations spaced apart in the vertical direction, and the right light blocking control member main body 42R has three openings 42Ra, 42Rb, and 42Rc formed at three locations spaced apart in the vertical direction.

[0044] Of the three openings 42La-42Lc and 42Ra-42Rc formed in each of the left and right pair of light-blocking control member main bodies 42L and 42R, the middle openings 42Lb and 42Rb are openings for medium-distance imaging and have a horizontally elongated inverted isosceles trapezoidal shape. Each of the left and right pair of openings 42Lb and 42Rb is formed so that its opening center is located at the rear focal point F of the left and right pair of projection lens main bodies 52L and 52R.

[0045] Of the three openings 42La-42Lc, 42Ra-42Rc formed in each of the left and right pair of light-blocking control member main bodies 42L, 42R, the upper openings 42La, 42Ra are openings for close-distance drawing and have a horizontally elongated inverted isosceles trapezoidal opening shape. Each of the left and right pair of openings 42La, 42Ra has an opening shape larger than that of the openings 42Lb, 42Rb, and is formed so that both side end faces are located on extensions of both side end faces of the openings 42Lb, 42Rb.

[0046] Of the three openings 42La-42Lc and 42Ra-42Rc formed in each of the left and right pair of light-blocking control member main bodies 42L and 42R, the lower openings 42Lc and 42Rc are openings for long-distance drawing and have a horizontally elongated inverted isosceles trapezoidal opening shape. Each of the left and right pair of openings 42Lc and 42Rc has an opening shape smaller than that of the openings 42Lb and 42Rb, and is formed so that both side end faces are located on extensions of both side end faces of the openings 42Lb and 42Rb.

[0047] The light blocking control member 40 is supported by the lamp body 12 and the body adapter 14 in a state where both its upper and lower ends are positioned.

[0048] The reflector 30 has a pair of left and right reflecting surfaces 30aL and 30aR formed so as to cover the light emitting element 20 from above.

[0049] Each of the pair of left and right reflective surfaces 30aL, 30aR is configured to reflect light emitted from the light emitting element 20 as convergent light toward three openings 42La-42Lc, 42Ra-42Rc formed in each of the pair of left and right shading control member main bodies 42L, 42R. Specifically, each of the pair of left and right reflective surfaces 30aL, 30aR has an ellipsoidal surface shape with a first focal point at the light emission center of the light emitting element 20 and a second focal point at a point on the optical axis AxL, AxR located significantly further forward of the lamp than each of the pair of left and right shading control member main bodies 42L, 42R.

[0050] The reflector 30 is supported by the lamp body 12 at a flange portion 30b formed at the lower end portion thereof.

[0051] Figure 1 shows the optical path of light emitted from the light-emitting center of the light-emitting element 20, which is reflected by the right-side reflecting surface 30aR of the reflector 30 and then enters the right-side projection lens main body 52R through the middle opening 42Rb in the right-side shading control member main body 42R.

[0052] In addition to the optical path shown in FIG. 1, FIG. 2 also shows the optical path of light emitted from the light-emitting center of the light-emitting element 20 when it is reflected by the left-side reflecting surface 30aL of the reflector 30 and then enters the left-side projection lens main body 52L through the middle opening 42Lb in the left-side light-blocking control member main body 42L.

[0053] Furthermore, Figure 3 shows the optical path of light emitted from the light-emitting center of the light-emitting element 20, which is reflected by the right-side reflecting surface 30aR of the reflector 30 and then enters the right-side projection lens main body 52R through each of the three openings 42Ra, 42Rb, and 42Rc in the right-side shading control member main body 42R.

[0054] Next, the pair of left and right drawing light distribution patterns PL and PR shown in FIGS. 4 and 5 will be described in detail.

[0055] The left-side drawing light distribution pattern PL is composed of three drawing light distribution patterns PLa, PLb, and PLc, and the right-side drawing light distribution pattern PR is composed of three drawing light distribution patterns PRa, PRb, and PRc. In this case, the three drawing light distribution patterns PLa to PLc constituting the left-side drawing light distribution pattern PL and the three drawing light distribution patterns PRa to PRc constituting the right-side drawing light distribution pattern PR are formed in a symmetrical positional relationship on the road surface 2 in front of the lamp. Therefore, the configuration of the three drawing light distribution patterns PRa to PRc constituting the right-side drawing light distribution pattern PR will be described below.

[0056] Each of the three drawing light distribution patterns PRa to PRc is formed as a substantially rectangular light distribution pattern that is elongated and extends diagonally right with respect to the front direction of the lamp (i.e., the front direction behind the vehicle).The three drawing light distribution patterns PRa to PRc are formed in three locations, namely, a short-distance area, a middle-distance area, and a long-distance area, of substantially the same size and arranged in series at substantially equal intervals from one another on a road surface 2 in front of the lamp.

[0057] The drawing light distribution pattern PRa formed in the near-distance region is a light distribution pattern formed as an inverted projection image of the opening 42Ra when the light emitted from the light-emitting element 20 is irradiated toward the front of the lamp through the reflecting surface 30aR of the reflector 30, the upper opening 42Ra in the shading control member main body 42R, and the projection lens main body 52R.

[0058] The drawing light distribution pattern PRb formed in the mid-distance region is a light distribution pattern formed as an inverted projection image of the opening 42Rb when the light emitted from the light-emitting element 20 is irradiated toward the front of the lamp through the reflecting surface 30aR of the reflector 30, the middle opening 42Rb in the shading control member main body 42R, and the projection lens main body 52R.

[0059] The drawing light distribution pattern PRc formed in the long-distance region is a light distribution pattern formed as an inverted projection image of the opening 42Rc when the light emitted from the light-emitting element 20 is irradiated toward the front of the lamp through the reflecting surface 30aR of the reflector 30, the lower opening 42Rc in the shading control member main body 42R, and the projection lens main body 52R.

[0060] In this case, the shading control member 40, which is made up of a shading plate, is formed so that each of the pair of left and right shading control member main bodies 42L, 42R extends in a convex curved shape toward the rear of the lamp when viewed in a plane, so that the three drawing light distribution patterns PLa to PLc that make up the left-side drawing light distribution pattern PL and the three drawing light distribution patterns PRa to PRc that make up the right-side drawing light distribution pattern PR are all formed as light distribution patterns with clear contours on both the left and right sides.

[0061] Next, the operation of this embodiment will be described.

[0062] The drawing lamp 10 according to this embodiment is configured to form a drawing light distribution pattern by irradiating light emitted from the light-emitting element 20 toward the front of the lamp through the projection lens 50. At this time, a light blocking control member 40 is disposed between the light-emitting element 20 and the projection lens 50 to block a portion of the light traveling from the light-emitting element 20 toward the projection lens 50. The projection lens 50 is configured to be integrally formed with a pair of left and right projection lens main bodies 52L and 52R disposed in directions inclined on both the left and right sides with respect to the front direction of the lamp. Furthermore, the light blocking control member 40 is configured to be an integral structure of a pair of left and right light blocking control member main bodies 42L, 42R arranged in directions inclined on both the left and right sides with respect to the front direction of the lamp, and each of the pair of left and right light blocking control member main bodies 42L, 42R is formed with openings 42La, 42Lb, 42Lc, 42Ra, 42Rb, 42Rc as light-transmitting portions for allowing light emitted from the light-emitting element 20 to enter each of the pair of left and right projection lens main bodies 52L, 52R, thereby obtaining the following effects.

[0063] That is, by making the light emitted from the light-emitting element 20 incident on the pair of left and right projection lens main bodies 52L and 52R of the projection lens 50 through the openings 42La-42Lc and 42Ra-42Rc formed in each of the pair of left and right shading control member main bodies 42L and 42R of the shading control member 40, it is possible to form a pair of left and right drawing light distribution patterns PL and PR extending in directions inclined to both the left and right with respect to the front direction of the lamp as the drawing light distribution pattern. Therefore, other vehicle drivers, pedestrians, etc. can easily recognize their own distance from the drawing lamp 10 by visually checking the change in the distance between the pair of left and right drawing light distribution patterns PL and PR. This can enhance the function of calling the attention of other vehicle drivers, pedestrians, etc.

[0064] Moreover, by forming a pair of left and right drawing light distribution patterns PL, PR as drawing light distribution patterns using light emitted from a single drawing lamp 10 in this manner, the following effects can be obtained.

[0065] That is, if a pair of left and right plotting light distribution patterns PL, PR were formed by irradiating light from a pair of left and right plotting lamps, it would not be easy to ensure sufficient accuracy in the positional relationship between these pair of left and right plotting light distribution patterns PL, PR. In contrast, by using a configuration in which a pair of left and right plotting light distribution patterns PL, PR are simultaneously formed by irradiating light from a single plotting lamp 10, it becomes easy to ensure sufficient accuracy in the positional relationship between them.

[0066] As described above, according to this embodiment, the drawing lighting fixture 10 configured to form a drawing light distribution pattern can enhance the function of calling attention to the surroundings. Moreover, this can be achieved with a simple lighting fixture configuration.

[0067] In addition, in this embodiment, each of the pair of left and right shading control member main bodies 42L and 42R has openings 42La, 42Lb, 42Lc, 42Ra, 42Rb, and 42Rc as translucent portions formed at three locations spaced apart in the vertical direction, so that each of the pair of left and right drawing light distribution patterns PL and PR can be formed as drawing light distribution patterns PLa-PLc and PRa-PRc at three locations in the fore-and-aft direction of the lamp on the road surface 2 in front of the lamp, thereby further enhancing the function of attracting attention to those in the surrounding area.

[0068] In this embodiment, each of the pair of left and right projection lens main bodies 52L, 52R that make up the projection lens 50 is arranged in a state inclined downward with respect to the front direction of the lamp, and each of the pair of left and right shading control member main bodies 42L, 42R that make up the shading control member 40 is arranged in a state inclined downward with respect to the front direction of the lamp, thereby improving the brightness and clarity of the pair of left and right drawing light distribution patterns PL, PR.

[0069] Furthermore, in this embodiment, the shading control member 40 is composed of a shading plate in which openings 42La to 42Lc, 42Ra to 42Rc are formed as light-transmitting portions in each of a pair of left and right shading control member main bodies 42L and 42R, so that a pair of left and right drawing light distribution patterns PL and PR can be formed with a simple configuration.

[0070] In this case, each of the pair of left and right shading control member main bodies 42L, 42R is formed so as to extend in a convex curved shape toward the rear of the lamp when viewed in a plane, making it easy to make them correspond to the image plane curvature of each of the pair of left and right projection lens main bodies 52L, 52R, and thereby making it possible to form each of the pair of left and right drawing light distribution patterns PL, PR as a light distribution pattern with clear contours on both the left and right sides.

[0071] Furthermore, the drawing lamp 10 of this embodiment is equipped with a reflector 30 that reflects the light emitted from the light-emitting element 20 toward the projection lens 50, and this reflector 30 has a pair of left and right reflective surfaces 30aL, 30aR formed to cover the light-emitting element 20 from above, and each of these pair of left and right reflective surfaces 30aL, 30aR is configured to reflect the light emitted from the light-emitting element 20 as convergent light toward the openings 42La to 42Lc, 42Ra to 42Rc formed in each of the pair of left and right shading control member main bodies 42L, 42R, thereby improving the utilization efficiency of the light emitted from the light-emitting element 20.

[0072] In the above embodiment, the light emitting element 20 is described as emitting white light, but other light colors (such as blue and green) can also be used.

[0073] In the above embodiment, it has been described that a pair of left and right drawing light distribution patterns PL and PR are formed on the road surface 2 in front of the lamp by the light emitted from the drawing lamp 10, but it is also possible to configure the pair of left and right drawing light distribution patterns to be formed on a wall surface located in front of the lamp or a wall surface extending toward the front of the lamp.

[0074] Next, a modification of the above embodiment will be described.

[0075] Fig. 6 is a view similar to Fig. 3, showing a drawing lamp 110 according to this modified example. Fig. 7 is a view similar to Fig. 4, showing the drawing lamp 110 mounted on a vehicle 100.

[0076] As shown in FIG. 6, the basic configuration of this modified example is the same as that of the above embodiment, but the configuration of the light blocking control member 140 is different from that of the above embodiment, and therefore the configuration of the reflector 130 is also different from that of the above embodiment.Furthermore, the configurations of the lamp body 112 and the body adapter 114 are also partially different from those of the above embodiment.

[0077] That is, the shading control member 140 of this modified example also has a configuration in which a pair of left and right shading control member main bodies are integrally formed and arranged in directions inclined on both the left and right sides with respect to the front direction of the lamp, but this shading control member 140 is made of a colorless, transparent, translucent member. Note that only the right shading control member main body 142R is shown in Figure 6.

[0078] The reflector 130 of this modification also has a pair of left and right reflective surfaces formed so as to cover the light emitting element 20 from above, and is supported by the lamp body 112 at a flange portion 130b formed at the lower end thereof. Note that only the right reflective surface 130aR is shown in Fig. 6.

[0079] The right reflective surface 130aR is configured to reflect the light emitted from the light emitting element 20 as parallel light toward the right shading control member main body 142R. Specifically, the right reflective surface 130aR is configured as a paraboloid of revolution having a focal point at the light emitting center of the light emitting element 20 and a central axis extending in a direction inclined downward and facing rightward with respect to the front direction of the lamp, thereby reflecting the light emitted from the light emitting element 20 as parallel light to the optical axis AxR of the right projection lens main body 52R toward the right shading control member main body 142R.

[0080] The shading control member main body 142R is formed in a substantially flat plate shape and is disposed in a state of being inclined downward with respect to the front direction of the lamp. In this shading control member main body 142R, an incident surface 142Rb onto which the light emitted from the light-emitting element 20 and reflected by the reflecting surface 130aR of the reflector 130 is incident is formed in a flat shape. On the other hand, in this shading control member main body 142R, an exit surface 142Ra from which the incident light from the incident surface 142Rb exits is partially configured as a light-transmitting region 142RaA, and the surrounding region of this light-transmitting region 142RaA is configured as a light-blocking region 142RaB.

[0081] The light-transmitting area 142RaA is formed by a plane that extends perpendicular to the optical axis AxR at the position of the rear focal point F of the projection lens main body 52R, and its outer shape is set to be a vertically elongated inverted isosceles trapezoid.

[0082] The light-shielding region 142RaB is configured by forming a plurality of corner cubes 144 on the light-emitting surface 142Ra. These corner cubes 144 are configured by arranging equilateral triangular corner cubes two-dimensionally and continuously, one above the other.

[0083] In the right-side shading control member main body 142R, of the parallel light emitted from the light-emitting element 20 and reflected by the right-side reflecting surface 130aR of the reflector 130, which then enters from its incident surface 142Rb and proceeds toward its exit surface 142Ra, the light that reaches the light-transmitting region 142RaA as a light-transmitting portion is emitted directly into the space in front of the lamp, while the light that reaches the light-blocking region 142RaB is totally reflected (i.e., retroreflected) in the opposite direction toward the incident surface 142Rb by multiple corner cubes 144.

[0084] The light blocking control member 140 is supported by the lamp body 112 and the body adapter 114 in a state where both upper and lower ends thereof are positioned.

[0085] As shown in FIG. 7, in this modification as well, the plotting light distribution pattern formed by the light emitted from the plotting lamp 110 is made up of a pair of left and right plotting light distribution patterns PL1 and PR1.

[0086] However, in this modified example, each of the pair of left and right drawing light distribution patterns PL1, PR1 is formed as a single, approximately rectangular light distribution pattern that extends in an elongated direction inclined to both the left and right sides relative to the front direction of the lamp, in a symmetrical positional relationship on the road surface 2 in front of the lamp.

[0087] The right-side drawing light distribution pattern PR1 is a light distribution pattern formed as an inverted projection image of a vertically elongated inverted isosceles trapezoidal image formed on the light-transmitting region 142RaA in the exit surface 142Ra of the right-side shading control member main body 142R by light emitted from the light-emitting element 20. The same is true for the left-side drawing light distribution pattern PL1.

[0088] In this modified example, a pair of left and right drawing light distribution patterns PL1, PR1 are simultaneously formed by light emitted from a single drawing lighting fixture 110, so it is easy to ensure sufficient accuracy in the positional relationship between them. This makes it possible to enhance the function of calling attention to the surroundings, and this can be achieved with a simple lighting fixture configuration.

[0089] It should be noted that the numerical values ​​shown as the specifications in the above embodiment and its modified examples are merely examples, and it goes without saying that these may be set to different values ​​as appropriate.

[0090] Furthermore, the present invention is not limited to the configurations described in the above embodiment and its modified examples, and various other modified configurations can be adopted. [Explanation of symbols]

[0091] 2 Road surface in front of the light fixture 10, 110 Drawing lamp 12, 112 Lamp body 14, 114 Body adapter 20 Light-emitting element 20a Light-emitting surface 22 PCB 30, 130 reflector 30aL, 30aR, 130aR reflective surface 30b, 130b flange 40 Light blocking control member (light blocking plate) 42L, 42R, 142R Light blocking control member main body 42La, 42Lb, 42Lc, 42Ra, 42Rb, 42Rc opening (transparent part) 50 Projection Lens 52L, 52R Projection lens body 52La, 52Ra front 52Lb, 52Rb rear 54 Central connection part 56 Side end flange 100 vehicles 140 Light-blocking control member (translucent member) 142Ra Output surface 142RaA Translucent area (transparent part) 142RaB Shade area 142Rb entrance plane AxL, AxR Optical axis F back focus PL, PLa, PLb, PLc, PL1, PR, PRa, PRb, PRc, PR1 Light distribution pattern for drawing

Claims

1. A drawing lamp configured to form a drawing light distribution pattern by irradiating light emitted from a light-emitting element forward through a projection lens, a light blocking control member is disposed 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 projection lens is configured such that a pair of left and right projection lens main bodies are integrally formed and arranged in directions inclined on both the left and right sides with respect to the front direction of the lamp fixture, The drawing lamp is characterized in that the light-blocking control member is configured to be integrally formed with a pair of left and right light-blocking control member main bodies arranged in directions inclined on both the left and right sides with respect to the front direction of the lamp, and each of the pair of left and right light-blocking control member main bodies is configured to have a translucent portion formed therein for allowing light emitted from the light-emitting element to enter each of the pair of left and right projection lens main bodies.

2. 2. The drawing lamp according to claim 1, wherein the light transmitting portion is formed at a plurality of locations spaced apart in the vertical direction.

3. The projection lens is arranged such that each of the pair of left and right projection lens main bodies is inclined downward with respect to the front direction of the lamp fixture, 3. The drawing lamp according to claim 1, wherein the pair of left and right light blocking control member main bodies of the light blocking control member are arranged in a state in which each of the left and right light blocking control member main bodies is inclined downward with respect to a front direction of the lamp.

4. 3. The drawing lamp according to claim 1, wherein the light-blocking control member is configured as a light-blocking plate having an opening formed as the light-transmitting portion in each of the pair of left and right light-blocking control member main bodies.

5. 5. The drawing lamp according to claim 4, wherein each of the pair of left and right light blocking control member main bodies is formed so as to extend in a convex curved shape toward the rear of the lamp in a plan view.

6. a reflector that reflects the light emitted from the light emitting element toward the projection lens, the reflector includes a pair of left and right reflective surfaces formed so as to cover the light emitting element from above, 5. The drawing lamp according to claim 4, wherein each of the pair of left and right reflective surfaces is configured to reflect light emitted from the light-emitting element as convergent light toward an opening formed in each of the pair of left and right light-blocking control member main body portions.

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