Vehicular lighting fixture

Abstract

To provide a vehicular lighting fixture including an optical axis adjustment mechanism capable of stably supporting a lamp body.SOLUTION: A vehicular lighting fixture includes: a lamp body which irradiates the front with light; a bracket which supports the lamp body; an optical axis adjustment mechanism; and a housing which supports the bracket from a rear side through the optical axis adjustment mechanism. A direction crossing a longitudinal direction is defined as a first direction and a direction crossing both of the longitudinal direction and the first direction is defined as a second direction. The optical axis adjustment mechanism has a fulcrum section which supports the bracket with respect to the housing, a first adjustment section which can adjust a longitudinal position of the bracket with respect to the housing on one side in the first direction of the fulcrum section, and a second adjustment section which can adjust the longitudinal position of the bracket with respect to the housing on one side in the second direction of the fulcrum section. One of the bracket and the housing has a protrusion, and the other has a storage section which stores the protrusion and faces an outside surface of the protrusion on an inside surface.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a vehicle lamp. [Background technology]

[0002] Some vehicle lighting fixtures, such as vehicle headlamps, are equipped with an optical axis adjustment (aiming) mechanism that adjusts the optical axis of light irradiated toward the front of the vehicle (for example, see Patent Document 1 below). In such vehicle lighting fixtures equipped with an optical axis adjustment mechanism, the direction of the optical axis irradiated from the lamp toward the front of the vehicle can be adjusted by adjusting the left-right tilt and vertical tilt of the lamp body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-107923 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, the weight of lamps has increased as the lamps have become more multifunctional. In vehicle lamps equipped with a beam axis adjustment mechanism, the lamps with increased weight must be supported via the beam axis adjustment mechanism, which may cause the lamps to become unstable.

[0005] The present invention has been proposed in view of the above-mentioned conventional circumstances, and has an object to provide a vehicle lamp equipped with a light axis adjustment mechanism that can stably support the lamp body. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides the following means. [1] A lamp that emits light forward; A bracket for supporting the light body; An optical axis adjustment mechanism; a housing that supports the bracket from a rear side via the optical axis adjustment mechanism, The direction intersecting the front-rear direction is the first direction, A direction intersecting both the front-rear direction and the first direction is a second direction, The optical axis adjustment mechanism includes: a fulcrum portion for supporting the bracket on the housing; a first adjustment portion capable of adjusting a front-rear position of the bracket with respect to the housing on one side in the first direction of the fulcrum portion; a second adjustment portion that is capable of adjusting a front-rear position of the bracket relative to the housing on one side of the fulcrum portion in the second direction, One of the bracket and the housing has a protrusion, and the other has a receiving portion in which the protrusion is received and whose inner surface faces an outer surface of the protrusion. Vehicle lighting fixtures. [2] The inner surface of the storage portion is A bottom wall surface facing forward and facing the protruding portion; a first side wall surface facing the first direction and facing the protrusion; and a second side wall surface facing the other side in the first direction and facing the protrusion. [1] A vehicle lamp as described in the above. [3] A distance dimension between the first side wall surface and the second side wall surface in the first direction increases toward the front. [2] A vehicle lamp as described in the above. [4] The first side wall surface protrudes toward one side in the first direction with respect to a first imaginary plane connecting a rear end and a front end of the first side wall surface. [3] A vehicle lamp as described in the above. [5] The second side wall surface protrudes toward the other side in the first direction with respect to a second imaginary plane connecting the rear end and the front end of the second side wall surface. [4] A vehicle lamp as described in the above. [6] The second adjustment unit is An aiming bolt extending along the front-rear direction; an aiming nut having a screw hole into which the aiming bolt is inserted; one of the aiming bolt and the aiming nut is held by the housing, and the other is held by the bracket; A virtual axis line connecting the fulcrum portion and the screw hole is assumed, The protrusion is disposed on the virtual axis line. [2] A vehicle lamp as described in the above. [7] The storage portion has a third side wall surface facing one side in the second direction and facing the protrusion. [2] A vehicle lamp as described in the above. Effect of the Invention

[0007] As described above, according to the present invention, a vehicle lamp equipped with a light axis adjustment mechanism capable of stably supporting a lamp body is provided. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a front view of a vehicle lamp 1 according to an embodiment. [Diagram 2] FIG. 2 is a perspective view of the bracket and the optical axis adjusting mechanism according to the embodiment. [Diagram 3] FIG. 3 is a partial cross-sectional view of the vehicle lamp according to the embodiment taken along line III-III in FIG. [Figure 4] FIG. 4 is a partial cross-sectional view of the vehicle lamp according to the embodiment taken along line IV-IV in FIG. [Diagram 5] FIG. 5 is a cross-sectional perspective view of a rib and a housing according to one embodiment. [Figure 6] FIG. 6 is a partial cross-sectional view of the vehicle lamp taken along line VI-VI in FIG. 5, showing one attitude of the rib. [Figure 7] FIG. 7 is a partial cross-sectional view of the vehicle lamp corresponding to FIG. 6, showing one attitude of the rib. [Figure 8] FIG. 8 is a partial cross-sectional view of the vehicle lamp corresponding to FIG. 6, showing one attitude of the rib. [Figure 9] FIG. 9 is a partial cross-sectional view of the vehicle lamp corresponding to FIG. 6, showing one attitude of the rib. [Figure 10] FIG. 10 is a partial cross-sectional view of the vehicle lamp corresponding to FIG. 6, showing one attitude of the rib. [Figure 11] FIG. 11 is a partial cross-sectional view of the vehicle lamp corresponding to FIG. 6, showing one attitude of the rib. [Figure 12] FIG. 12 is a partial cross-sectional view of the vehicle lamp corresponding to FIG. 6, showing one attitude of the rib. [Figure 13] FIG. 13 is a partial cross-sectional view of the vehicle lamp corresponding to FIG. 6, showing one attitude of the rib. [Figure 14] FIG. 14 is a cross-sectional perspective view of a rib and a housing portion according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the drawings used in the following description, in order to make each component easier to see, the dimensions of the components may be shown at different scales, and the dimensional ratios of each component may not necessarily be the same as in reality.

[0010] In the drawings shown below, an XYZ Cartesian coordinate system is set, with the X-axis direction being the front-rear direction (length direction) of the vehicle lamp 1, the Y-axis direction being the left-right direction (width direction) of the vehicle lamp 1, and the Z-axis direction being the vertical direction (height direction) of the vehicle lamp 1. Each part of the vehicle lamp 1 will be described with the +Z side defined as the top, the -Z side defined as the bottom, the +X side defined as the front, the -X side defined as the rear, the +Y side defined as the left, and the -Y side defined as the right.

[0011] Furthermore, in the following description, the Z-axis direction may be referred to as the first direction, with the downward (-Z) side being referred to as one side of the first direction and the upward (+Z) side being referred to as the other side of the first direction. Furthermore, the X-axis direction may be referred to as the second direction, with the rightward (-Y) side being referred to as one side of the second direction and the leftward (+Y) side being referred to as the other side of the second direction. Note that the first direction may be any direction that intersects with the front-rear direction, and the second direction may be any direction that intersects with both the front-rear direction and the first direction.

[0012] <Vehicle lighting fixtures> FIG. 1 is a front view of a vehicle lamp 1 according to an embodiment. The vehicle lamp 1 of this embodiment is used as a vehicle headlamp (headlamp) for illuminating the area in front of a motorcycle (not shown), for example. The vehicle lamp 1 of this embodiment may be mounted on a vehicle other than a motorcycle.

[0013] The vehicle lamp 1 includes a housing 40, a pair of first lamp bodies 11, a pair of second lamp bodies 12, a pair of third lamp bodies 13, a pair of brackets 20, and a pair of optical axis adjustment mechanisms 30. The vehicle lamp 1 may further include an extension, a reflector, and the like.

[0014] <Housing> The housing 40 is disposed behind the pair of first lamp bodies 11, the pair of second lamp bodies 12, the pair of third lamp bodies 13, the pair of brackets 20, and the pair of optical axis adjustment mechanisms 30. The housing 40 supports the brackets 20 via the optical axis adjustment mechanisms 30. The housing 40 is fixed to a vehicle (not shown). A storage portion 45 is provided on a front surface 40a of the housing 40 to store a rib 24 of the bracket 20 (described later). The configuration of the storage portion 45 will be described in detail later.

[0015] The housing 40 has a bilaterally symmetrical shape when viewed from the front. In addition, the pair of first lamps 11, the pair of second lamps 12, the pair of third lamps 13, the pair of brackets 20, and the pair of optical axis adjustment mechanisms 30 are configured bilaterally symmetrically with respect to each other. The pair of first lamps 11, the pair of second lamps 12, the pair of third lamps 13, the pair of brackets 20, and the pair of optical axis adjustment mechanisms 30 are arranged bilaterally symmetrically with respect to the housing 40. As a result, the vehicle lamp 1 is configured bilaterally symmetrically as a whole. In the following description, the description will be given with attention to the configuration of the left side (+Y) of the vehicle lamp 1, and the description of the configuration of the right side (-Y) will be omitted.

[0016] <Light body> The first lamp body 11, the second lamp body 12, and the third lamp body 13 each emit light forward (+X). The first lamp body 11, the second lamp body 12, and the third lamp body 13 are arranged in a line in the vertical direction. The first lamp body 11, the second lamp body 12, and the third lamp body 13 are arranged in this order from top to bottom. The first lamp body 11, the second lamp body 12, and the third lamp body 13 are lamp bodies having different functions such as light distribution patterns. The first lamp body 11, the second lamp body 12, and the third lamp body 13 are lamp bodies that can emit any one of beams such as high beam, low beam, daytime running light (DRL) beam, and adaptive driving beam (ADB).

[0017] Although detailed illustration is omitted, the first lamp body 11, the second lamp body 12, and the third lamp body 13 each have a light source and an optical system arranged in front of the light source. As the light source of the first lamp body 11, the second lamp body 12, and the third lamp body 13, for example, a halogen lamp, a high intensity discharge (HID) lamp, a light emitting diode (LED) lamp, a laser diode (LD) lamp, etc. can be used.

[0018] In the following description, when the first lamp 11, the second lamp 12, and the third lamp 13 are not differentiated from one another, they may be collectively referred to as lamps 11, 12, and 13. In the present embodiment, the vehicle lamp 1 is provided with three types of lamps 11, 12, and 13 each having a different function. However, the vehicle lamp 1 may have any one of the three types of lamps 11, 12, and 13.

[0019] <bracket> Fig. 2 is a perspective view of the bracket 20 and the optical axis adjustment mechanism 30 of this embodiment. Fig. 2 shows only one of the pair of brackets 20 and the pair of optical axis adjustment mechanisms 30 provided in the vehicle lamp 1, which is on the left side (+Y). Also, in Fig. 2, the second lamp body 12 and the third lamp body 13 are omitted from illustration.

[0020] The bracket 20 has a front surface 20a facing forward (+X) and a rear surface 20b facing backward (-X). The first light body 11, the second light body 12, and the third light body 13 are fixed to the front surface 20a. That is, the bracket 20 supports the first light body 11, the second light body 12, and the third light body 13 from the rear on the front surface 20a.

[0021] A first nut holding portion 21, a second nut holding portion 22, a fulcrum fixing portion 23, and a rib (convex portion) 24 are provided on the rear surface 20b of the bracket 20. The first nut holding portion 21 and the second nut holding portion 22 protrude backward (-X) from the rear surface 20b. A fulcrum holding portion 37 of the optical axis adjustment mechanism 30 is fixed to the fulcrum fixing portion 23.

[0022] The rib 24 is provided on the side surface 22a facing the right (-Y) of the second nut retaining portion 22. The rib 24 is connected to the rear surface 20b. The rib 24 protrudes rearward (-X) from the rear surface 20b and protrudes rightward (-Y) from the side surface 22a. The rib 24 extends in the front-rear direction. The rib 24 is accommodated in the accommodating portion 45 of the housing 40. The configurations of the rib 24 and the accommodating portion 45 will be described in detail later.

[0023] <Optical axis adjustment mechanism> The optical axis adjustment mechanism 30 connects the housing 40 and the bracket 20. The optical axis adjustment mechanism 30 is provided to adjust the attitude of the bracket 20 relative to the housing 40. By adjusting the attitude of the bracket 20 with the optical axis adjustment mechanism 30, the direction of the optical axis of the light projected toward the front of the vehicle from the lamps 11, 12, and 13 fixed to the bracket 20 is adjusted. That is, the optical axis adjustment mechanism 30 of this embodiment can adjust the direction of the optical axis of the lamps 11, 12, and 13 by an aiming operation that adjusts the left-right tilt and the vertical tilt of the bracket 20, respectively. In the vehicle lamp 1 of this embodiment, the pair of brackets 20 are supported by different optical axis adjustment mechanisms 30. Therefore, the attitude of each of the pair of brackets 20 is adjusted individually. Furthermore, since the three types of lamps 11, 12, and 13 are fixed to one bracket 20, the directions of the optical axes of these are adjusted simultaneously.

[0024] The optical axis adjustment mechanism 30 of this embodiment has a first aiming bolt 31, a second aiming bolt 32, a first aiming nut 33, a second aiming nut 34, a fulcrum shaft 36, and a fulcrum holding portion 37. The first aiming bolt 31 extends along the first axis J1. The second aiming bolt 32 extends along the second axis J2. The fulcrum shaft 36 extends along the third axis J3. The first aiming nut 33 is disposed on the first axis J1. The second aiming nut 34 is disposed on the second axis J2. The fulcrum holding portion 37 is disposed on the third axis J3.

[0025] The first axis J1, the second axis J2, and the third axis J3 are imaginary lines that extend in the front-rear direction and are parallel to each other. In this embodiment, the first axis J1 is located below the second axis J2 and the third axis J3. Therefore, the first aiming bolt 31 is located below the second aiming bolt 32 and the fulcrum shaft 36. In this embodiment, the second axis J2 is located to the right (-Y) of the first axis J1 and the third axis J3. Therefore, the second aiming bolt 32 is located to the right of the first aiming bolt 31 and the fulcrum shaft 36.

[0026] The first aiming bolt 31 and the second aiming bolt 32 each have a shaft portion 31j, 32j extending in the front-rear direction (X-axis direction) and a head portion 31h, 32h located at the rear end of the shaft portion 31j, 32j. A male thread is formed on the outer circumferential surface of the front end of the shaft portion 31j, 32j.

[0027] Fig. 3 is a partial cross-sectional view of the vehicle lamp 1 taken along line III-III in Fig. 1. As shown in Fig. 3, a rear end of the shaft portion 31j of the first aiming bolt 31 is inserted into a first retaining hole 41 provided in the housing 40, and is retained by the housing 40 so as to be rotatable about a first axis J1.

[0028] Fig. 4 is a partial cross-sectional view of the vehicle lamp 1 taken along line IV-IV in Fig. 1. As shown in Fig. 4, the rear end of the shaft portion 32j of the second aiming bolt 32 is inserted into a second retaining hole 42 provided in the housing 40 and is retained by the housing 40 so as to be rotatable about the second axis J2.

[0029] As shown in FIG. 2, the first aiming nut 33 is held by the first nut holding portion 21. Similarly, the second aiming nut 34 is held by the second nut holding portion 22. That is, the first aiming nut 33 and the second aiming nut 34 are each supported by the bracket 20. Note that the holding of the first aiming nut 33 and the second aiming nut 34 by the first nut holding portion 21 and the second nut holding portion 22 allows the first aiming nut 33 and the second aiming nut 34 to be slightly inclined with respect to the bracket 20. The first aiming nut 33 and the second aiming nut 34 are provided with screw holes 33h and 34h, respectively. The screw holes 33h and 34h extend along the front-rear direction.

[0030] 3, the first aiming bolt 31 is inserted into the screw hole 33h of the first aiming nut 33. The first aiming bolt 31 and the first aiming nut 33 constitute a first adjustment part 38. When the first aiming bolt 31 is rotated around the first axis J1, the bracket 20 slides in the front-rear direction along the first axis J1.

[0031] The second aiming bolt 32 is inserted into the screw hole 34h of the second aiming nut 34. The second aiming bolt 32 and the second aiming nut 34 constitute a second adjustment portion 39. When the second aiming bolt 32 is rotated around the second axis J2, the bracket 20 slides in the front-rear direction along the second axis J2.

[0032] 3 and 4, the fulcrum shaft 36 has a fixed shaft portion 36j extending in the front-rear direction (X-axis direction) and a fulcrum portion 36b located at the front end of the fixed shaft portion 36j. The fixed shaft portion 36j is fixed to a shaft fixing portion 43 of the housing 40. The fulcrum portion 36b is substantially spherical with a fulcrum P as its center. The fulcrum portion 36b is held by a fulcrum holding portion 37.

[0033] The fulcrum holding portion 37 is fixed to the fulcrum fixing portion 23 of the bracket 20. The fulcrum holding portion 37 and the fulcrum portion 36b form a ball joint. The fulcrum holding portion 37 holds the fulcrum portion 36b in a state in which the displacement of the fulcrum P is suppressed while allowing the attitude of the fixed shaft portion 36j with respect to the fulcrum P to change.

[0034] 1, 3, and 4 show a first virtual axis VL1 and a second virtual axis VL2. As shown in FIG. 3, the first virtual axis VL1 is a virtual axis that connects the center of the fulcrum 36b (i.e., the fulcrum P) and the center of the screw hole 33h of the first adjustment unit 38. The fulcrum 36b and the first adjustment unit 38 of this embodiment are arranged side by side in the vertical direction (Z-axis direction). Therefore, the first virtual axis VL1 extends along the vertical direction (Z-axis direction). Note that the first virtual axis VL1 of this embodiment extends at a slight inclination in the left-right direction (Y-axis direction) with respect to the vertical direction. As shown in FIG. 4, the second virtual axis VL2 is a virtual axis that connects the center of the fulcrum 36b (i.e., the fulcrum P) and the center of the screw hole 34h of the second adjustment unit 39. The fulcrum 36b and the second adjustment unit 39 of this embodiment are arranged side by side in the left-right direction (Y-axis direction). Therefore, the second imaginary axis VL2 extends along the left-right direction (Y-axis direction). Note that the second imaginary axis VL2 in this embodiment extends at a slight incline in the front-rear direction (X-axis direction) with respect to the left-right direction.

[0035] The operation of the optical axis adjustment mechanism 30 will be described with reference to FIG. 1. In the optical axis adjustment mechanism 30, the bracket 20 moves in the front-rear direction along the first axis J1 by rotating the first aiming bolt 31 of the first adjustment unit 38. At this time, the fulcrum P and the second adjustment unit 39 are supported in a state in which tilt is permitted, but do not move. Therefore, by operating the first adjustment unit 38, the bracket 20 swings in the first rotation direction θ1 with the second virtual axis VL2 as the rotation axis. The second virtual axis VL2 extends along the left-right direction. Therefore, this operation can change the vertical tilt of the bracket 20, and the direction of the optical axis of the lamps 11, 12, and 13 can be adjusted in the vertical direction.

[0036] In the optical axis adjustment mechanism 30, by rotating the second aiming bolt 32 of the second adjustment part 39, the bracket 20 moves in the front-rear direction along the second axis J2. At this time, the fulcrum P and the first adjustment part 38 are supported in a state in which tilt is permitted, but do not move. Therefore, by operating the second adjustment part 39, the bracket 20 swings in the second rotation direction θ2 with the first virtual axis VL1 as the rotation axis. The first virtual axis VL1 extends along the vertical direction. Therefore, by this operation, the left-right tilt of the bracket 20 can be changed, and the direction of the optical axis of the lamps 11, 12, 13 can be adjusted left-right.

[0037] <Ribs (protrusions) and housing parts> 5 is a cross-sectional perspective view of the rib 24 and the accommodating portion 45 that accommodates the rib 24 in this embodiment. The accommodating portion 45 has an upper convex portion 47 and a lower wall portion 48. The upper convex portion 47 and the lower wall portion 48 each extend forward from the front surface 40a of the housing 40. The upper convex portion 47 and the lower wall portion 48 are arranged side by side in the vertical direction. The upper convex portion 47 is arranged above the lower wall portion 48. The accommodating portion 45 accommodates the rib 24 between the upper convex portion 47 and the lower wall portion 48.

[0038] Fig. 6 is a partial cross-sectional view of the vehicle lamp 1 taken along line VI-VI in Fig. 5. Fig. 6 is a cross-sectional view showing the storage portion 45 of the housing 40 and the rib 24 of the bracket 20. Fig. 6 shows the attitude of the rib 24 relative to the storage portion 45 before the optical axis adjustment mechanism 30 is operated (initial state). Figs. 7 to 13 are partial cross-sectional views of the vehicle lamp 1 corresponding to Fig. 6. Figs. 7 to 13 show the attitude of the rib 24 relative to the storage portion 45 after the optical axis adjustment mechanism 30 is operated.

[0039] In the state shown in FIG. 6, the optical axis adjustment mechanism 30 is not operated and is in the initial state shown in FIG. 7, the optical axis adjustment mechanism 30 is operated upward by 5°. In the state shown in FIG. 8, the optical axis adjustment mechanism 30 is operated downward by 5°. In the state shown in FIG. 9, the optical axis adjustment mechanism 30 is operated upward by 5° and then operated rightward by 3.5°. In the state shown in FIG. 10, the optical axis adjustment mechanism 30 is operated downward by 5° and then operated rightward by 3.5°. In the state shown in FIG. 11, the optical axis adjustment mechanism 30 is operated downward by 5° and then operated leftward by 3.5°. In the state shown in FIG. 12, the optical axis adjustment mechanism 30 is operated rightward by 3.5° and then operated upward by 5°. In the state shown in FIG. 13, the optical axis adjustment mechanism 30 is operated rightward by 3.5° and then operated downward by 5°.

[0040] In this embodiment, the attitude of the rib 24 in response to the operation of the first adjustment unit 38 and the second adjustment unit 39 of the optical axis adjustment mechanism 30 has a hysteresis characteristic. That is, when the first adjustment unit 38 is operated followed by the operation of the second adjustment unit 39, the attitude of the rib 24 is not the same as when the second adjustment unit 39 is operated followed by the operation of the first adjustment unit 38, even if the amount of operation is the same. This is because when one of the first adjustment unit 38 and the second adjustment unit 39 is operated, the rotation axis of the other is tilted.

[0041] 6, the storage portion 45 opens to the front (+X). The storage portion 45 has an inner surface 46 that faces the outer surface of the rib 24. The inner surface 46 has a first side wall surface 46a, a second side wall surface 46b, and a bottom wall surface 46c.

[0042] The bottom wall surface 46c faces forward. Therefore, the bottom wall surface 46c faces the opening direction of the storage portion 45. The bottom wall surface 46c faces the rib 24 housed in the storage portion 45 in the front-rear direction. The bottom wall surface 46c is a part of the front surface 40a of the housing 40.

[0043] The first side wall surface 46a faces downward (-Z). The first side wall surface 46a faces the rib 24 housed in the housing portion 45 in the vertical direction. The first side wall surface 46a is the lower surface of the upper convex portion 47. The second side wall surface 46b faces upward (+Z). The second side wall surface 46b faces the rib 24 housed in the housing portion 45 in the vertical direction. The second side wall surface 46b is the upper surface of the lower wall portion 48.

[0044] The first side wall surface 46a and the second side wall surface 46b each extend forward (+X) from the bottom wall surface 46c. The first side wall surface 46a and the second side wall surface 46b face each other in the vertical direction (Z-axis direction). The vertical distance between the first side wall surface 46a and the second side wall surface 46b increases toward the front (+X). Therefore, the vertical opening width of the storage section 45 increases from the bottom wall surface 46c of the storage section 45 toward the opening side.

[0045] A rear end 46aa of the first side wall surface 46a is located at the upper end of the bottom wall surface 46c. A front end 46ab of the first side wall surface 46a is located at the opening of the storage section 45. As shown in Fig. 6, a first imaginary plane VP1 is assumed to connect the rear end 46aa and the front end of the first side wall surface 46a. The first side wall surface 46a protrudes downward (-Z) from the first imaginary plane VP1.

[0046] A rear end 46ba of the second side wall surface 46b is located at the lower end of the bottom wall surface 46c. A front end 46bb of the second side wall surface 46b is located at the opening of the storage section 45. As shown in Fig. 6, a second imaginary plane VP2 is assumed to connect the rear end 46ba and the front end of the second side wall surface 46b. The second side wall surface 46b protrudes upward (+Z) from the second imaginary plane VP2.

[0047] The rib 24 of this embodiment contacts any one of the first side wall surface 46a, the second side wall surface 46b, and the bottom wall surface 46c of the inner surface 46 of the housing portion 45 at the contact point CP in any posture of Figs. 6 to 13. Therefore, the bracket 20 in the state shown in Figs. 6 to 13 is supported by the housing 40 at the contact point CP in addition to the first adjustment portion 38, the second adjustment portion 39, and the fulcrum portion 36b of the optical axis adjustment mechanism 30. According to this embodiment, the support of the bracket 20 by the housing 40 via the optical axis adjustment mechanism 30 can be stabilized. Therefore, even if the weight of the lamps 11, 12, and 13 mounted on the bracket 20 is large, the bracket 20 can be stably supported. As a result, the vibration of the optical axes of the lamps 11, 12, and 13 during driving can be suppressed. Furthermore, damage to the bracket 20 caused by the bracket 20 vibrating with a large amplitude can be suppressed.

[0048] In addition, in the vehicle lamp 1 of this embodiment, depending on the adjustment state of the optical axis adjustment mechanism 30, the rib 24 may face the inner surface 46 of the housing portion 45 with a small gap therebetween. According to this embodiment, even if the rib 24 is separated from the inner surface 46, the amplitude of the bracket 20 can be suppressed within the range of the gap between the rib 24 and the inner surface 46, and the bracket 20 can be suppressed from vibrating greatly. In other words, even if the rib 24 and the inner surface 46 are in contact with each other or face each other with a gap therebetween, the effect of suppressing the vibration of the bracket 20 can be obtained to a certain degree or more. In addition, in the vehicle lamp 1 of this embodiment, the minimum gap between the rib 24 and the inner surface 46 is designed to be 0.5 mm or less.

[0049] As shown in Fig. 7 etc., when the bracket 20 is tilted upward, the rib 24 is disposed so as to incline upward as it approaches the front (+X) inside the housing portion 45. On the other hand, as shown in Fig. 8 etc., when the bracket 20 is tilted downward, the rib 24 is disposed so as to incline downward as it approaches the front (+X) inside the housing portion 45. That is, in response to the operation of the optical axis adjustment mechanism 30, the rib 24 changes its position in a direction that moves the front base portion 24r upward or downward.

[0050] In the storage section 45 of this embodiment, the opening width in the vertical direction increases from the bottom wall surface 46c of the storage section 45 toward the opening side. That is, the shape of the inner surface 46 is shaped in accordance with a change in posture such that the front base portion 24r of the rib 24 is tilted in the vertical direction, as shown in Figs. 6 to 13. According to this embodiment, the rib 24 can easily come into contact with each portion of the inner surface 46 regardless of the posture of the rib 24.

[0051] Furthermore, in this embodiment, the first side wall surface 46a and the second side wall surface 46b have a shape that protrudes toward the respective imaginary planes VP1 and VP2. As a result, the inner surface 46 has a shape that imitates the movement of the rib 24 accompanying the operation of the optical axis adjustment mechanism 30. As a result, the inner surface 46 and the rib 24 are easily brought into contact with each other. In addition, in this embodiment, both the first side wall surface 46a and the second side wall surface 46b have a shape that protrudes toward the respective imaginary planes VP1 and VP2. As a result, both the first side wall surface 46a and the second side wall surface 46b are easily brought into contact with the rib 24. However, if either one of the first side wall surface 46a and the second side wall surface 46b has a shape that protrudes toward the respective imaginary planes, the surface has a shape that imitates the movement of the rib 24 as described above, and it is easy to obtain the effect of making it easy to contact with the rib 24.

[0052] As shown in FIG. 3, the first aiming nut 33 of this embodiment is located rearward (-X) with respect to the fulcrum P. Therefore, the first virtual axis VL1 is inclined with respect to a plane (YZ plane) perpendicular to the front-rear direction (X-axis direction). According to this embodiment, the amount of movement of the first aiming nut 33 in the vertical direction (Z-axis direction) when the bracket is moved forward and backward by adjustment of the first adjustment unit 38 is larger than when the first virtual axis is perpendicular to the front-rear direction. That is, in the vehicle lamp 1 of this embodiment, the bracket 20 is easily moved in the vertical direction with the operation of the first adjustment unit 38 for tilting the direction of the optical axis of the lamp body 11, 12, 13 in the vertical direction.

[0053] As shown in FIG. 4, the second aiming nut 34 of this embodiment is located rearward (-X) with respect to the fulcrum P. Therefore, the second virtual axis VL2 is inclined with respect to a plane (YZ plane) perpendicular to the front-rear direction (X-axis direction). According to this embodiment, the amount of movement of the first aiming nut 33 in the vertical direction (Z-axis direction) when the bracket is moved forward and backward by adjustment of the second adjustment unit 39 is larger than that in the case where the second virtual axis is perpendicular to the front-rear direction. That is, in the vehicle lamp 1 of this embodiment, the bracket 20 is easily moved in the left-right direction with the operation of the second adjustment unit 39 for tilting the direction of the optical axis of the lamp body 11, 12, 13 in the left-right direction.

[0054] That is, in the bracket 20 of this embodiment, the first aiming nut 33 and the second aiming nut 34 are disposed with the fulcrum P shifted in the front-rear direction relative to each other, so that the bracket 20 can easily move in the vertical direction or left-right direction in response to operation of the optical axis adjustment mechanism 30. In this embodiment, the inner surface 46 of the accommodation portion 45 has a shape following the movement of the rib 24 as described above, so that the rib 24 can easily come into contact with the inner surface 46, and the bracket 20 can easily be supported stably, even when the bracket 20 moves in the vertical direction or left-right direction in response to the operation of the optical axis adjustment.

[0055] Furthermore, according to this embodiment, by disposing the fulcrum P with respect to the first aiming nut 33 and the second aiming nut 34 while shifting it in the front-rear direction, the fulcrum shaft 36 can be made shorter than the first aiming bolt 31 and the second aiming bolt 32. Therefore, spaces S1, S2 can be easily formed in front of or behind the fulcrum shaft 36, and the vehicle lamp 1 can be made more compact by effectively using the spaces S1, S2.

[0056] As shown in FIG. 1, the rib 24 of this embodiment is disposed on the second imaginary axis VL2. The bracket 20 of this embodiment swings about the second imaginary axis VL2 as a rotation axis in response to the operation of the first adjustment unit 38. Therefore, the rib 24 also swings about the second imaginary axis VL2 in response to the operation of the first adjustment unit 38. According to this embodiment, by disposing the rib 24 on the second imaginary axis VL2, it is possible to reduce the amount of displacement of the rib 24 associated with the operation of the first adjustment unit 38. This allows the accommodation portion 45 that accommodates the rib 24 to be made smaller, and as a result, the vehicle lamp 1 can be made more compact. (Summary of the embodiment) As shown in FIG. 1, the vehicle lamp 1 of this embodiment includes lamp bodies 11, 12, and 13 that irradiate light forward (+X), a bracket 20 that supports the lamp bodies 11, 12, and 13, a light axis adjustment mechanism 30, and a housing 40 that supports the bracket 20 from the rear via the light axis adjustment mechanism 30. A direction intersecting with the front-rear direction (X-axis direction) is defined as a first direction (Z-axis direction), and a direction intersecting with both the front-rear direction and the first direction is defined as a second direction (Y-axis direction). As shown in FIG. 2, the light axis adjustment mechanism 30 has a fulcrum portion 36b, a first adjustment portion 38, and a second adjustment portion 39. The fulcrum portion 36b supports the bracket 20 relative to the housing 40. The first adjustment portion 38 can adjust the front-rear position of the bracket 20 relative to the housing 40 on one side (-Z) of the fulcrum portion 36b in the first direction. The second adjustment portion 39 is capable of adjusting the front-to-rear position of the bracket 20 relative to the housing 40 on one side (-Y) in the second direction of the fulcrum portion 36b. As shown in Fig. 6, one of the bracket 20 and the housing 40 has a rib (convex portion) 24, and the other has an accommodation portion 45 in which the rib 24 is accommodated and whose inner surface 46 faces the outer surface of the rib 24.

[0057] According to the above-mentioned configuration, the rib 24 can be brought into contact with the inner surface 46 of the housing portion 45 or can be opposed to the housing portion 45 with a gap therebetween. When the rib 24 and the inner surface 46 are in contact with each other, the number of support points of the bracket 20 by the housing 40 via the optical axis adjustment mechanism 30 can be increased, and the support of the bracket 20 can be stabilized. When the rib 24 and the inner surface 46 are opposed to each other with a gap therebetween, the amplitude of the bracket 20 can be suppressed within the range of the gap between the rib 24 and the inner surface 46, and the bracket 20 can be suppressed from vibrating greatly. As a result, according to the above-mentioned configuration, the vibration of the bracket 20 can be suppressed, thereby suppressing the deflection of the optical axis of the lamps 11, 12, and 13 during driving, and suppressing damage to the bracket 20 due to vibration.

[0058] In the above embodiment, the bracket 20 has the rib 24, and the housing 40 has the storage portion 45. However, the bracket 20 may have the storage portion, and the housing 40 may have the rib. In the above embodiment, the protrusion (rib 24) stored in the storage portion 45 is rib-shaped extending in the front-rear direction. However, the shape of the protrusion is not limited to this embodiment. Similarly, the storage portion 45 is not limited to the configuration of this embodiment as long as it has an inner surface 46 surrounding the protrusion (rib 24).

[0059] In the vehicle lamp 1 of this embodiment, the inner surface 46 of the housing portion 45 has a bottom wall surface 46c, a first side wall surface 46a, and a second side wall surface 46b. The bottom wall surface 46c faces forward (+X) and faces the rib 24. The second side wall surface 46b faces one side in the first direction (-Z) and faces the rib 24. The second side wall surface 46b faces the other side in the first direction (+Z) and faces the rib 24.

[0060] According to the above-mentioned configuration, the inner surface 46 of the accommodating portion 45 surrounds the rib 24 from both sides in the first direction and from the rear (-X), and can effectively suppress vibration of the bracket 20 in the first direction and the front-rear direction. Note that in the above-mentioned embodiment, since the first direction is the vertical direction, the inner surface 46 of the accommodating portion 45 can effectively suppress vibration of the bracket 20 in the vertical direction. For example, when the first direction is the left-right direction, the inner surface of the accommodating portion effectively suppresses vibration of the bracket in the left-right direction.

[0061] In the vehicle lamp 1 of this embodiment, the distance dimension between the first side wall surface 46a and the second side wall surface 46b in the first direction (Z-axis direction) increases toward the front.

[0062] According to the above-mentioned configuration, the rib 24 can easily come into contact with various parts of the inner surface 46 in response to a change in posture such as tilting the base portion 24r of the rib 24 vertically. As a result, the number of support points of the bracket 20 by the housing 40 can be increased, making it easier to stabilize the support.

[0063] In the vehicle lamp 1 of this embodiment, the first side wall surface 46a protrudes to one side in the first direction (-Z) with respect to a first imaginary plane VP1 that connects a rear end 46aa and a front end 46ab of the first side wall surface 46a.

[0064] According to the above-mentioned configuration, the first side wall surface 46a can be formed in a shape following the movement of the rib 24 accompanying the operation of the optical axis adjustment mechanism 30, making it easier for the rib 24 to come into contact with the inner surface 46.

[0065] Furthermore, in the vehicle lamp 1 of this embodiment, the second side wall surface 46b protrudes toward the other side (+Z) in the first direction with respect to a second imaginary plane VP2 connecting the rear end 46ba and the front end 46bb of the second side wall surface 46b.

[0066] According to the above-mentioned configuration, the second side wall surface 46b can be formed in a shape following the movement of the rib 24 accompanying the operation of the optical axis adjustment mechanism 30, making it easier for the rib 24 to come into contact with the inner surface 46.

[0067] In the vehicle lamp 1 of this embodiment, the second adjustment portion 39 has a second aiming bolt 32 extending along the front-rear direction (X-axis direction) and a second aiming nut 34 provided with a screw hole 34h into which the second aiming bolt 32 is inserted. One of the second aiming bolt 32 and the second aiming nut 34 is held by the housing 40, and the other is held by the bracket 20. A second imaginary axis VL2 connecting the fulcrum portion 36b and the screw hole 34h is assumed. The rib 24 is disposed on the second imaginary axis VL2.

[0068] According to the above-mentioned configuration, by arranging the rib 24 on the second imaginary axis VL2, it is possible to reduce the amount of displacement of the rib 24 accompanying the operation of the first adjustment part 38, and it is possible to reduce the size of the rib 24 and the housing part 45. As a result, it is possible to reduce the size of the vehicle lamp 1.

[0069] (Modification) 14 is a cross-sectional perspective view of a storage section 145 of a modified example that can be used in the above-described embodiment and the rib 24 stored in the storage section 145. The storage section 145 of this modification is different from the above-described embodiment mainly in that it has a third side wall surface 146d. Note that the same components as those in the above-described embodiment are given the same reference numerals and their description will be omitted.

[0070] Similar to the above-described embodiment, the housing 140 of this modification has an accommodating portion 145 that accommodates the rib 24. The accommodating portion 145 has an inner side surface 146 that faces the outer side surface of the rib 24. The inner side surface 146 of this modification has a third side wall surface 146d in addition to the first side wall surface 46a, the second side wall surface 46b, and the bottom wall surface 46c similar to the above-described embodiment.

[0071] The third side wall surface 146d extends forward (+X) from the bottom wall surface 46c. The third side wall surface 146d faces leftward (+Y). The third side wall surface 146d faces the rib 24 housed in the housing portion 145 in the left-right direction. Therefore, the inner surface 146 of this modified example surrounds the rib 24 from above at the first side wall surface 46a, from below at the second side wall surface 46b, from behind at the bottom wall surface 46c, and from the rightward (-Y) at the third side wall surface 146d.

[0072] The accommodation portion 145 of this modification can contact the rib 24 not only at the first side wall surface 46a, the second side wall surface 46b, and the bottom wall surface 46c, but also at the third side wall surface 146d. This makes it easy to increase the number of contact points CP between the rib 24 and the inner surface 146, and can stabilize the support of the bracket 20 by the housing 140 via the optical axis adjustment mechanism 30.

[0073] In particular, the third side wall surface 146d of this embodiment contacts or faces the rib 24 in the left-right direction (Y-axis direction), suppressing left-right vibration of the bracket 20. That is, according to this modification, the first side wall surface 46a and the second side wall surface 46b suppress vertical vibration of the bracket 20, and the third side wall surface 146d suppresses left-right vibration of the bracket 20. According to this embodiment, it is possible to suppress vertical and left-right vibration of the optical axes of the lamps 11, 12, and 13 during traveling. Note that, in the storage section 145 of this modification, as in the above embodiment, it is preferable that the minimum gap between the rib 24 and the inner surface 146 is 0.5 mm or less.

[0074] Although the embodiments and modifications of the present invention have been described above, the configurations and combinations thereof in the embodiments and modifications are merely examples, and additions, omissions, substitutions, and other modifications of the configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the embodiments.

[0075] For example, in the above embodiment, a case has been described in which only one set of ribs 24 and receiving portions 45 is provided between the bracket 20 and the housing 40, but multiple sets of ribs 24 and receiving portions 45 may be provided. In this case, the number of support points can be further increased, and vibration of the bracket 20 can be effectively suppressed. [Explanation of symbols]

[0076] 1...vehicle lamp, 11, 12, 13...lamp body, 20...bracket, 24...rib (convex portion), 30...optical axis adjustment mechanism, 32...second aiming bolt (aiming bolt), 33h, 34h...screw hole, 34...second aiming nut (aiming nut), 36b...fulcrum portion, 38...first adjustment portion, 39...second adjustment portion, 40, 140...housing, 45, 145...accommodation portion, 46, 146...inner surface, 46a...first side wall surface, 46aa, 46ba...rear end, 46ab, 46bb...front end, 46b...second side wall surface, 46c...bottom wall surface, 146d...third side wall surface, P...fulcrum, VL2...second virtual axis line (virtual axis line), VP1...virtual surface, VP1...first virtual surface, VP2...second virtual surface

Claims

1. A light body that emits light forward; A bracket for supporting the light body; An optical axis adjustment mechanism; a housing that supports the bracket from a rear side via the optical axis adjustment mechanism, A direction intersecting the front-rear direction is a first direction, A direction intersecting both the front-rear direction and the first direction is a second direction, The optical axis adjustment mechanism includes: a fulcrum portion for supporting the bracket on the housing; a first adjustment portion that adjusts a front-rear position of the bracket with respect to the housing on one side in the first direction of the fulcrum portion; a second adjustment portion that is capable of adjusting a front-rear position of the bracket with respect to the housing on one side of the fulcrum portion in the second direction, One of the bracket and the housing has a protrusion, and the other has a receiving portion in which the protrusion is received and whose inner surface faces an outer surface of the protrusion. Vehicle lighting fixtures.

2. The inner surface of the storage portion is A bottom wall surface facing forward and facing the protruding portion; a first side wall surface facing the first direction and facing the protrusion; a second side wall surface facing the other side in the first direction and facing the protrusion, 2. A vehicle lamp according to claim 1.

3. a distance dimension between the first side wall surface and the second side wall surface in the first direction increases toward the front; 3. A vehicle lamp according to claim 2.

4. The first side wall surface protrudes toward one side in the first direction with respect to a first imaginary plane that connects a rear end and a front end of the first side wall surface.

4. A vehicle lamp according to claim 3.

5. The second side wall surface protrudes toward the other side in the first direction with respect to a second imaginary plane that connects a rear end and a front end of the second side wall surface.

5. A vehicle lamp according to claim 4.

6. The second adjustment unit is An aiming bolt extending along the front-rear direction; an aiming nut having a screw hole into which the aiming bolt is inserted; one of the aiming bolt and the aiming nut is held by the housing, and the other is held by the bracket; A virtual axis line connecting the fulcrum portion and the screw hole is assumed, The protrusion is disposed on the virtual axis line.

3. A vehicle lamp according to claim 2.

7. the housing portion has a third side wall surface facing one side in the second direction and facing the protrusion; 3. A vehicle lamp according to claim 2.

Images