JP6435908B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp that can switch light distribution.

  Conventionally, this kind of vehicle lamp is known (for example, Patent Document 1 and Patent Document 2). Hereinafter, a conventional vehicle lamp will be described.

  The conventional vehicular lamp of Patent Document 1 always has a holder, a light source bulb, a movable shade that is rotatably supported by the holder, and a movable shade that is always directed toward a shielding position that forms a light distribution pattern for passing beams. A return spring that is elastically biased, a rod member that is connected to the movable shade, a solenoid that is connected to the rod and moves the movable shade from the shielding position to a shielding relaxation position that forms a traveling beam light distribution pattern; Is provided. The conventional vehicular lamp of Patent Document 1 can switch the light distribution between a light distribution pattern for passing beam and a light distribution pattern for traveling beam.

  The conventional vehicular lamp of Patent Document 2 is fixed to a holder, a bulb, a shade that is rotatably supported by the holder, a spring that biases the shade to an upper position before forming a low beam, and a shade. And a solenoid that is connected to the retainer and rotates the shade from a front upper position to a rear lower position that forms a high beam. The conventional vehicular lamp of Patent Document 2 can switch the light distribution between a low beam and a high beam.

Japanese Patent No. 4527639 JP 2002-50216 A

  In such a vehicular lamp, it is important to suppress movement of the movable shade and the shade to suppress a change in light distribution. That is, in the vehicular lamp of the conventional Patent Document 1, the shake of the movable shade is suppressed by the return spring to suppress the change in the light distribution. In the conventional vehicle lamp of Patent Document 2, the shake of the shade is suppressed by a spring to suppress the change in light distribution.

  The problem to be solved by the present invention is that it is important to suppress a change in light distribution in a conventional vehicular lamp.

  The present invention (the invention according to claim 1) includes a light source, a heat sink member to which the light source is attached, a bracket attached to the heat sink member, and a rotation shaft between the first position and the second position of the bracket. A movable light distribution optical control member, which is mounted so as to be able to rotate around and rotate in the direction of the rotation axis, and optically controls light from the light source to a predetermined light distribution, a bracket and a movable light distribution optical control member, And a biasing member that biases the movable light distribution optical control member to the first position, and is attached to the bracket so as to be rotatable about the rotation axis, and is connected to the movable light distribution optical control member. A driving force transmission member attached to the bracket and connected to the driving force transmission member, and positioned at the first position via the driving force transmission member by the driving force of the driving portion. A driving mechanism that rotates the movable light distribution optical control member against the urging force of the urging member to switch to the second position and switches the light distribution, and the driving force transmission member is the movable light distribution optical control member. Is transmitted to the movable light distribution optical control member, and the movable light distribution optical control member is positioned in the second position. In some cases, the movable light distribution optical control member is transmitted to the movable light distribution optical control member with a force for shifting the movable light distribution optical control member in the other direction of the rotation axis.

  The present invention (the invention according to claim 2) is characterized in that the direction of action of the driving force of the driving unit is parallel or substantially parallel to the rotational axis of the movable light distribution optical control member.

  This invention (the invention according to claim 3) is characterized in that the driving force transmission member is inclined with respect to the rotation axis of the movable light distribution optical control member.

  In this invention (invention according to claim 4), the rotational axis of the movable light distribution optical control member and the rotational axis of the driving force transmission member are in a positional relationship of torsional positions, and form a right angle or a substantially right angle. It is characterized by that.

  In this invention (the invention according to claim 5), the urging member is constituted by a spring member, the driving force transmitting member is constituted by a link member, and one end of the spring member and one end of the link member are , And the connection part is connected to the drive part, the other end of the spring member is fixed to the drive mechanism, and the other end of the link member is movable light distribution. It is connected to the optical control member.

  This invention (the invention according to claim 6) is characterized in that the rigidity of the link member is larger than the rigidity of the spring member.

  This invention (the invention according to claim 7) is characterized in that the spring member and the link member form a coil shape on the same axis.

  This invention (invention according to claim 8) is characterized in that the connecting portion is made of a wire, and the connecting portion made of the wire and the same axis are parallel or substantially parallel.

  This invention (invention according to claim 9) is characterized in that the number of turns of the spring member is larger than the number of turns of the link member, or the coil center diameter of the spring member is larger than the coil center diameter of the link member. To do.

  In the vehicular lamp according to the present invention, when the movable light distribution optical control member is positioned at the first position by the driving force transmission member, the force that moves the movable light distribution optical control member in one direction in the rotation axis direction is movable. When the movable light distribution optical control member is transmitted to the optical optical control member and the movable light distribution optical control member is located at the second position, a force for shifting the movable light distribution optical control member in the other direction of the rotation axis is transmitted to the movable light distribution optical control member. Is done. As a result, in the vehicular lamp according to the present invention, when the movable light distribution optical control member is located at the first position, the movable light distribution optical control member is offset in one direction in the rotation axis direction, and the movable light distribution optical When the control member is located at the second position, the movable light distribution optical control member is offset in the other direction of the rotation axis. Thereby, the vehicular lamp according to the present invention can suppress a change in the light distribution by suppressing the movement of the movable light distribution optical control member.

FIG. 1 is a schematic longitudinal sectional view (schematic vertical sectional view) of a lamp unit showing an embodiment of a vehicular lamp according to the present invention. FIG. 2 is a perspective view showing main parts such as a bracket, a movable shade, a solenoid, a biasing member, and a driving force transmission member. FIG. 3 is a front view (viewed in the direction of arrow III in FIG. 2) showing the main part when the movable shade is located at the first position. FIG. 4 is a plan view (a sectional view taken along line IV-IV in FIG. 3) showing a part of the mounting shaft and the movable shade. FIG. 5 is a front view (viewed in the direction of arrow III in FIG. 2) showing the main part when the movable shade is located at the second position. 6 is a plan view (a sectional view taken along line VI-VI in FIG. 5) showing a part of the mounting shaft and the movable shade. FIG. 7 is a perspective view showing an urging member and a driving force transmission member.

  Hereinafter, an example of an embodiment (example) of a vehicular lamp according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In FIG. 1, hatching of a semiconductor-type light source, a projection lens, a movable shade, a solenoid, a biasing member, and a driving force transmission member is omitted. In FIG. 4 and FIG. 6, hatching of the mounting shaft is omitted. In this specification, front, rear, upper, lower, left, and right are front, rear, upper, lower, left, and right when the vehicle lamp according to the present invention is mounted on a vehicle. In FIG. 2, “F” is “front”, “B” is “rear”, “U” is upper, “D” is “lower”, “L” is “left”, and “R” is “right”. It is.

(Description of Configuration of Embodiment)
Hereinafter, the configuration of the vehicular lamp in this embodiment will be described. In this example, for example, a headlamp of an automotive headlamp will be described.

(Description of vehicle lamp 1)
In FIG. 1, the code | symbol 1 is a vehicle lamp in this embodiment. The vehicle lamp 1 is mounted on both the left and right sides of the front portion of the vehicle. As shown in FIG. 1, the vehicular lamp 1 includes a lamp housing (not shown), a lamp lens (not shown), a semiconductor light source 2 as a light source, a reflector 3, a projection lens 4, Heat sink member 5, movable shade 6 as movable light distribution optical control member, solenoid 7 as drive mechanism, spring member 80 as biasing member, link member 81 as drive force transmission member, and attachment member Bracket 10 and holder 11.

  The lamp housing and the lamp lens (for example, a transparent outer lens) define a lamp chamber (not shown). The semiconductor type light source 2, the reflector 3, the projection lens 4, the heat sink member 5, the movable shade 6, the solenoid 7, the spring member 80, the link member 81, the bracket 10 and the holder 11 are projector types. The lamp unit is configured. The lamp units 2, 3, 4, 5, 6, 7, 80, 81, 10, 11 are arranged in the lamp chamber, and the bracket 10, the holder 11, and the vertical optical axis adjustment mechanism (Not shown) and a left / right optical axis adjusting mechanism (not shown).

  In the lamp chamber, lamp units other than the lamp units 2, 3, 4, 5, 6, 7, 80, 81, 10, 11 such as a clearance lamp unit, a turn signal lamp unit, and a daytime running lamp Units may be placed. In addition, an inner panel (not shown), an inner housing (not shown), an inner lens (not shown), or the like may be disposed in the lamp chamber.

(Description of bracket 10 and holder 11)
The bracket 10 and the holder 11 have a separate structure or an integral structure. The attachment member may include attachment parts other than the bracket 10 and the holder 11 in some cases.

  The bracket 10 has a plate shape. The bracket 10 includes a first plate portion 101, a second plate portion 102, and a third plate portion 103.

  The first plate portion 101 has a horizontally long rectangular plate shape. The heat sink member 5 is disposed on the rear surface of the first plate portion 101 (on the side of the semiconductor-type light source 2 and opposite to the projection lens 4). The solenoid 7 is attached to a surface of the front side of the first plate portion 101 (on the side opposite to the semiconductor light source 2 and on the projection lens 4 side).

  One end of a mounting shaft 104 having a cylindrical shape in this example is fixed to the left side of the front surface of the first plate portion 101. The mounting shaft 104 is disposed in the front-rear direction. A central axis (axis) O1 of the mounting shaft 104 is an optical axis (an optical axis of the vehicular lamp 1, an optical axis (not shown) of a reflecting surface of the reflector 3, an optical axis Z of the projection lens 4, etc.). Hereinafter, it is referred to as “optical axis Z”). The spring member 80 and the link member 81 are attached to the attachment shaft 104.

  The second plate portion 102 is integrally formed by being bent at a right angle or a substantially right angle from the left and right sides of the first plate portion 101 to the rear side. Left and right convex pieces are integrally provided above the left and right second plate portions 102, respectively. One end of each of the left and right rotating shafts 105 having a cylindrical shape is fixed to the outer side surfaces of the convex pieces of the left and right second plate portions in this example.

  The left and right rotating shafts 105 are arranged in the left-right direction. A central axis (axis) O2 of the left and right rotating shafts 105 is orthogonal or substantially orthogonal to the optical axis Z and the central axis O1 of the mounting shaft 104. A shaft portion 109 having a small diameter is integrally provided at the outer end portion of the left and right rotating shafts 105 via a stepped portion. The movable shade 6 is attached to the left and right shaft portions 109 so as to be rotatable and switchable between a first position and a second position.

  On the front side of the convex piece of the right second plate portion 102, a first stopper 106 is integrally formed by bending rightward or substantially rightward on the right side. The first stopper 106 determines the first position of the movable shade 6. That is, the movable shade 6 is positioned at the first position.

  The third plate portion 103 is integrally formed by being bent at a right angle or a substantially right angle from the rear side of the left and right second plate portions 102 to the left and right sides. A second stopper 107 is integrally provided on the upper side of the right third plate portion 103 so as to face the first stopper 106. The second stopper 107 is bent to be inclined rearward with respect to the third plate portion 103. As a result, the first stopper 106 and the second stopper 107 are opposed to each other in the front-rear direction with an open angle of a central angle centered on the central axis O2 of the rotating shaft 105. The second stopper 107 determines the second position of the movable shade 6. That is, the movable shade 6 is positioned at the second position.

  The third plate portion 103 is provided with mounting holes, positioning holes, and the like. The heat sink member 5 is attached to the third plate portion 103. The third plate portion 103 is attached to the lamp housing via the vertical optical axis adjustment mechanism and the horizontal optical axis adjustment mechanism (and the attachment part).

  The holder 11 has a ring shape. The projection lens 4 is attached to the holder 11.

(Description of the semiconductor-type light source 2)
The semiconductor-type light source 2 is a self-luminous semiconductor-type light source such as an LED, an OEL, or an OLED (organic EL). The semiconductor light source 2 includes a light emitting unit 20 that emits light (not shown). The light emitting unit 20 has a rectangular light emitting surface whose longitudinal direction intersects the left and right direction with respect to the optical axis Z (in this example, orthogonal or almost orthogonal). The light emitting unit 20 is upward in this example.

  The semiconductor light source 2 is mounted on the heat sink member 5 and attached to the heat sink member 5 via a holder 21. The holder 21 is attached to the heat sink member 5 with a screw or the like (not shown). The semiconductor light source 2 is supplied with a current from a lighting circuit (not shown).

(Description of reflector 3)
The reflector 3 is made of, for example, a material having high heat resistance and light impermeability such as a resin member. The reflector 3 is attached to the heat sink member 5 with a screw or the like (not shown).

  The reflector 3 has a hollow shape in which a front part and a lower part are opened, and a rear part, an upper part, and both left and right parts are closed. On the concave inner surface of the closed portion of the reflector 3, there is provided a reflecting surface (convergent reflecting surface) 30 formed of a free-form surface or a rotating ellipsoid based on an ellipse (based on a rotating ellipsoid). The reflective surface 30 includes a first focal point F1, a second focal point (second focal line) F2, a first focal point F1, and a first focal point located at or near the center of the light emitting unit 20 of the semiconductor light source 2. And the optical axis Z connecting the two focal points F2. The reflecting surface 30 reflects light from the light emitting surface of the light emitting unit 20 facing upward toward the projection lens 4 as reflected light (not shown).

(Description of the projection lens 4)
The projection lens 4 is made of a resin lens such as a PC material, a PMMA material, or a PCO material. That is, since the light emitted from the light emitting unit 20 of the semiconductor light source 2 does not have high heat, a resin lens can be used as the projection lens 4. The projection lens 4 is attached to the holder 11.

  The projection lens 4 has a focal point (focal line, lens focal point, lens focal line, meridional image plane which is a focal plane on the object space side) F3 and the optical axis Z. The focal point F3 of the projection lens 4 is located at or near the second focal point F2 of the reflecting surface 30. The optical axis Z of the projection lens 4 and the optical axis of the reflecting surface 30 intersect at the second focal point F2 and the focal point F3 or in the vicinity thereof. Note that the optical axis Z of the projection lens 4 and the optical axis of the reflecting surface 30 may coincide or substantially coincide with each other.

  The projection lens 4 is a projection lens based on an aspherical surface. The projection lens 4 includes a rear entrance surface 40 and a front exit surface 41. The incident surface 40 faces the reflector 3. The incident surface 40 is substantially flat or aspheric (a convex surface or a concave surface with respect to the reflector 3). The exit surface 41 is an aspherical convex surface.

  The projection lens 4 irradiates the reflected light from the reflecting surface 30 of the reflector 3 to the outside, that is, the front of the vehicle, which is the light from the light emitting unit 20 of the semiconductor light source 2. That is, the projection lens 4 irradiates the front of the vehicle with a low beam light distribution pattern (not shown) and a high beam light distribution pattern (not shown).

(Description of heat sink member 5)
The heat sink member 5 is made of a material having high thermal conductivity such as resin or metal die casting (aluminum die casting). The heat sink member 5 includes an upper plate portion 50 and a plurality of fin portions 52. The semiconductor light source 2 and the reflector 3 are attached to the upper plate portion 50. The heat sink member 5 is attached to the bracket 10. The heat sink member 5 may serve as both a heat radiating member and an attachment member.

(Description of movable shade 6)
The movable shade 6 is composed of a light-impermeable member, in this example, a metal plate. The movable shade 6 is formed by press drawing a metal plate. The movable shade 6 is composed of a first shade 61 on the front side and a second shade 62 on the rear side. The first shade 61 and the second shade 62 are integrally fixed by caulking, riveting, welding, or the like. Edges for forming a cut-off line (not shown) of the low beam light distribution pattern are provided on the upper edges of the first shade 61 and the second shade 62, respectively.

  The left and right end portions of the first shade 61 are integrally provided with attachment pieces 63 via recesses recessed on the rear side. The left and right mounting pieces 63 are parallel or substantially parallel to the optical axis Z and the central axis O1 of the mounting shaft 104, and are orthogonal or substantially orthogonal to the central axis O2 of the rotating shaft 105. The left and right attachment pieces 63 are rotatably attached to the shaft portions 109 of the left and right rotation shafts 105 by E rings 64. That is, the left and right mounting pieces 63 are provided with circular mounting holes, respectively. The left and right mounting pieces 63 are fitted (externally fitted) to the shaft portions 109 of the left and right rotating shafts 105 from the outside through the mounting holes, and the E rings 64 are attached to the distal ends of the left and right rotating shafts 105. Fix each one. Here, since the left and right attachment pieces 63 are rotatably attached to the left and right shaft portions 109, the inner peripheral surfaces of the attachment holes of the left and right attachment pieces 63 and the outer circumferences of the left and right shaft portions 109. There is a very small gap between the surfaces. For this reason, the left and right attachment pieces 63 are movable in the direction of the central axis O2 (left and right direction) of the rotation shaft 105 with respect to the left and right shaft portions 109. As described above, the movable shade 6 is rotatable between the semiconductor light source 2 and the projection lens 4 so that the bracket 10 can rotate about the central axis O2 of the rotation shaft 105 and the rotation shaft 105. It is arranged to be movable in the direction of the central axis O2. The central axis O2 of the rotation shaft 105, which is the rotation axis of the movable shade 6, is perpendicular to or substantially perpendicular to the optical axis Z in a plan view seen from above or a bottom view seen from below. And it is horizontal or almost horizontal to the left and right.

  On the upper side of the right mounting piece 63, a stopper piece 67 is provided integrally with the first stopper 106 and the second stopper 107. The stopper piece 67 is disposed between the first stopper 106 and the second stopper 107. When the stopper piece 67 comes into contact with the first stopper 106, the movable shade 6 is moved to the first position as shown by a solid line in FIG. 1, and a two-dot chain line in FIGS. Located in. When the stopper piece 67 comes into contact with the second stopper 107, the movable shade 6 is positioned at the second position as shown by a two-dot chain line in FIG. 1 and a solid line in FIG.

  As a result, the movable shade 6 is attached to the bracket 10 so as to be switchable between the first position and the second position around the central axis O2 and to be movable in the direction of the central axis O2. ing. When the movable shade 6 is located at the first position, the movable shade 6 optically controls the light from the semiconductor-type light source 2 and the reflected light from the reflector 3 to a predetermined light distribution, that is, the low beam light distribution pattern. When the movable shade 6 is located at the second position, the movable shade 6 optically controls the light from the semiconductor light source 2 and the reflected light from the reflector 3 to a predetermined light distribution, that is, the high beam light distribution pattern.

  A connecting piece 65 is integrally provided at the central portion of the lower edge of the first shade 61 by being bent at a right angle or substantially at a right angle to the front side. The connecting piece 65 is parallel or substantially parallel to the left and right mounting pieces 63. That is, the connecting piece 65 is parallel or substantially parallel to the optical axis Z and the central axis O1 of the mounting shaft 104, and is orthogonal or substantially orthogonal to the central axis O2 of the rotating shaft 105. The connecting piece 65 is provided with a small circular connecting hole 66.

(Description of solenoid 7)
The solenoid 7 includes a case 70 attached to the front surface of the bracket 10. The solenoid 7 may have a part of the bracket 10 as a part of the case 70.

  A coil or the like (not shown) is accommodated in the case 70. A plunger 71 as a drive unit is attached to the left side surface of the case 70 so as to advance and retreat. The plunger 71 has a cylindrical shape. The forward / backward direction of the plunger 71, that is, the central axis (axis) O3 is orthogonal or almost orthogonal to the optical axis Z and the central axis O1 of the mounting shaft 104. As a result, the central axis O3 of the plunger 71 is parallel or substantially parallel to the central axis O2 of the left and right rotating shafts 105. In other words, the direction in which the driving force of the driving unit is applied and the forward / backward direction (the central axis O3) of the plunger 71 is parallel or substantially parallel to the left and right rotating shafts 105 (the central axis O2) of the movable shade 6. It is.

  A slit 72 is provided in the upper part of the tip of the plunger 71 so as to be orthogonal or almost orthogonal to the central axis O3. One end of the spring member 80 and one end of the link member 81 are connected to the slit 72. On the left edge of the upper surface of the case 70, a hook 73 is integrally provided on the upper side. The other end of the spring member 80 is fixed to the hook 73. The case 70 of the solenoid 7 may serve as both a case member and an attachment member.

  The solenoid 7 switches the movable shade 6 located at the first position to the second position by the driving force when the plunger 71 moves backward, and changes the low beam light distribution pattern to the high beam light distribution pattern. It is to switch.

(Description of spring member 80 and link member 81)
The spring member 80 is interposed between the bracket 10 and the movable shade 6. The spring member 80 biases the movable shade 6 to the first position. On the other hand, the link member 81 is attached to the bracket 10 so as to be rotatable around the central axis O1 of the attachment shaft 104. The link member 81 is connected to the movable shade 6.

  In this example, the spring member 80 is composed of one torsion coil spring (torsion coil spring) as shown in FIG. That is, in this example, the spring member 80 is made of a spring steel material having a round bar with a circular cross section. In this example, the link member 81 is similarly constituted by one torsion coil spring (torsion coil spring) as shown in FIG. That is, in this example, the link member 81 is made of a spring steel having a round bar having a circular cross section.

  One end of the spring member 80, that is, one arm 82, and one end of the link member 81, that is, one arm 83 are integrally connected (coupled) via a connecting portion 84. The one arm 82 of the spring member 80, the one arm 83 of the link member 81, and the connection portion 84 are bent at right angles or substantially right angles to each other. In this example, the spring member 80 and the link member 81 which are integrally formed are double torsion springs in which two torsion coil springs (torsion coil springs) are coupled as shown in FIG. Consists of.

  The coil portion of the spring member 80 and the coil portion of the link member 81 are attached to the attachment shaft 104 by an E ring 87. That is, the coil portion of the spring member 80 and the coil portion of the link member 81 are fitted (externally fitted) to the mounting shaft 104 from the outside, and the E ring 87 is fixed to the tip of the mounting shaft 104. . Between the coil portion of the spring member 80 and the mounting shaft 104, a space is provided for winding the coil portion of the spring member 80.

  A space is provided between the coil portion of the link member 81 and the attachment shaft 104 so that the coil portion of the link member 81 can rotate with respect to the attachment shaft 104. As a result, the link member 81 is attached to the bracket 10 so as to be rotatable around the central axis O <b> 1 of the attachment shaft 104.

  The connecting portion 84 is accommodated in the slit 72 of the plunger 71. As a result, the connecting portion 84 is connected to the plunger 71. That is, the connecting portion 84 is always in elastic contact with the surface of the slit 72 on the distal end side of the plunger 71. The elastic contact between the connecting portion 84 and the surface of the slit 72 is caused by the rotation of the connecting portion 84 about the central axis O1 and the plunger as shown by the solid line and the two-dot chain line in FIGS. 71 is allowed to advance and retract in the direction of the central axis O3.

  The other end, that is, the other arm 85 of the spring member 80 is engaged with the hook 73 of the case 70 of the solenoid 7. As a result, the other end of the spring member 80 is fixed to the solenoid 7. Thereby, the spring member 80 is interposed between the bracket 10 and the movable shade 6.

  The other end of the link member 81, that is, the tip end portion of the other arm 86 is inserted into the connecting hole 66 of the connecting piece 65 of the movable shade 6 from obliquely below. As a result, the other end of the link member 81 is connected to the movable shade 6.

  Since the distal end portion of the other arm 86 of the link member 81 is inserted into the connecting hole 66 from obliquely below, it is always in elastic contact with the edge of the connecting hole 66. The elastic contact between the distal end portion of the other arm 86 and the edge of the connecting hole 66 is the center of the distal end portion of the other arm 86 as shown by the solid line and the two-dot chain line in FIGS. The rotation around the axis O1 and the rotation around the central axis O2 of the connecting piece 65 of the movable shade 6 are allowed.

  2, 3, 5, and 7, the other arm 86 of the link member 81 that is inserted into the connecting hole 66 from obliquely below (the two-dot chain line in FIGS. 2 and 3). Is inclined with respect to the rotation axis of the movable shade 6 (see the central axis O2 of the one-dot chain line in FIGS. 2 and 3). Further, the other arm 86 of the link member 81 (see the two-dot chain line in FIGS. 2 and 3) and the rotation axis of the movable shade 6 (the center axis O2 of the one-dot chain line in FIGS. 2 and 3) Is a positional relationship of torsional positions. Further, the rotation axis of the other arm 86, that is, the central axis O1, and the rotation axis of the movable shade 6, that is, the central axis O2, are shown in FIGS. 2, 3, 5, and 7, as shown in FIG. They are in a positional relationship, and form a right angle or a substantially right angle in a plan view seen from above or a bottom view seen from below.

  As shown in FIG. 3, when the movable shade 6 is located at the first position, the link member 81 moves the movable shade 6 in one direction (right direction) in the direction of the central axis O2 of the rotary shaft 105. A rightward second component force F <b> 7 that is a force to be moved is transmitted to the movable shade 6. Further, as shown in FIG. 5, the link member 81 moves the movable shade 6 in the other direction (left direction) in the direction of the central axis O2 of the rotation shaft when the movable shade 6 is located at the second position. A leftward second component force F <b> 11, which is a force to be shifted, is transmitted to the movable shade 6.

  The rigidity of the link member 81 is greater than the rigidity of the spring member 80. That is, the spring constant of the link member 81 is larger than the spring constant of the spring member 80. In this example, the number of turns (effective number of turns) of the spring member 80 is larger than the number of turns (effective number of turns) of the link member 81, and the coil center diameter of the spring member 80 and the coil center diameter of the link member 81 are Are identical or nearly identical. In this example, the spring member 80 and the link member 81 (the connecting member 8) are longer in the axial direction but can be smaller in the radial direction.

  In some cases, the number of turns of the spring member 80 and the number of turns of the link member 81 are the same or substantially the same, and the coil center diameter of the spring member 80 is larger than the coil center diameter of the link member 81. In this case, the spring member 80 and the link member 81 (the connecting member 8) have a larger radial dimension, but can have a shorter axial length. Further, the number of turns and the coil center diameter may be changed simultaneously. Furthermore, the number of turns, the coil center diameter, and the wire diameter may be arbitrarily combined.

  The coil portion of the spring member 80 and the coil portion of the link member 81 have a coil shape on the same axis, that is, the central axis O1 of the mounting shaft 104. That is, the center line of the coil part of the spring member 80 and the center line of the coil part of the link member 81 are coincident or substantially coincident with each other. The connecting direction between the central axis O1 of the mounting shaft 104 and the connecting portion 84 (the one arm 82 of the spring member 80 of the connecting portion 84 and the one arm 83 of the link member 81), The center line of the round bar of the connecting portion 84 is parallel or substantially parallel. That is, the center line of the coil part of the spring member 80 and the center line of the coil part of the link member 81 and the center line of the round bar of the connection part 84 are parallel or substantially parallel.

(Description of the operation of the embodiment)
The vehicular lamp 1 in this embodiment is configured as described above, and the operation thereof will be described below.

  In a normal state, that is, when the coil of the solenoid 7 is not energized, the plunger 71 of the solenoid 7 is advanced by the spring force of the spring member 80 of the connecting member 8 (the solid line in FIGS. 2 and 3, FIG. 5). It is in an extended state indicated by a two-dot chain line in the middle). At this time, as shown in FIG. 3, a counterclockwise force F4 is applied around the central axis O1 to the other arm 86 of the link member 81 of the connecting member 8 in a front view as viewed from the front. For this reason, a force F5 is applied to the edge of the connection hole 66 of the connection piece 65 of the movable shade 6 into which the distal end portion of the other arm 86 is inserted. This force F5 is decomposed into a downward first component force F6 and a rightward second component force F7.

  The downward first component force F6 acts on the movable shade 6 as a force for rotating the movable shade 6 about the central axis O2 forward (counterclockwise as viewed from the left side when viewed from the left side as shown in FIG. 1). . For this reason, the stopper piece 67 of the movable shade 6 is in contact with the first stopper 106 of the bracket 10. As a result, the movable shade 6 is located at the first position as indicated by the solid line in FIGS. 1 to 3 and the two-dot chain line in FIG.

  On the other hand, the rightward second component force F7 acts on the movable shade 6 as a force for moving the movable shade 6 to the right along the central axis O2, as shown in FIGS. For this reason, the movable shade 6 is shifted to the right, and the right side surface of the left mounting piece 63 of the movable shade 6 abuts on the stepped surface 108 of the left rotating shaft 105 of the bracket 10. Thereby, the movable shade 6 is located in the first position without play. The rightward second component force F7 is smaller than the downward first component force F6, and is a force that can move the movable shade 6 to the right.

  When the movable shade 6 is shifted to the right, the left side surface of the right mounting piece 63 of the movable shade 6 is separated from the step surface 108 of the right rotating shaft 105 of the bracket 10, and the left side surface of the mounting piece 63. A gap SR is generated between the step surface 108 and the stepped surface 108. Even when the gap SR is generated, the movable shade 6 is shifted to the right by the second component force F7 facing right, and is positioned at the first position without any play.

  In this state, the light emitting unit 20 of the semiconductor light source 2 is turned on. Then, the light radiated from the upward light emitting unit 20 is reflected to the projection lens 4 side as reflected light by the reflecting surface 30 of the reflector 3. Here, a part of the reflected light is shielded by the movable shade 6 located at the first position. The reflected light that has not been shielded by the movable shade 6 located at the first position proceeds to the projection lens 4 side. The reflected light that has traveled toward the projection lens 4 enters the projection lens 4 from the incident surface 40 of the projection lens 4 and is radiated from the exit surface 41 of the projection lens 4 to the outside, that is, the front of the vehicle as a low beam light distribution pattern. The

  In the state where the light emitting unit 20 of the semiconductor light source 2 is turned on, the coil of the solenoid 7 is energized. Then, the plunger 71 of the solenoid 7 moves backward along the central axis O <b> 3 from the advanced state (expanded state) against the spring force of the spring member 80 of the connecting member 8. As the plunger 71 moves backward, as shown in FIG. 5, when viewed from the front, one arm 82 of the spring member 80 of the connecting member 8, one arm 83 of the link member 81, and the connecting portion 84 are It rotates clockwise around the central axis O1 (from the state shown by the two-dot chain line to the state shown by the solid line).

  Here, in the connecting member 8, the rigidity of the link member 81 is larger than the rigidity of the spring member 80. The other arm 85 of the spring member 80 is engaged and fixed to the hook 73 of the solenoid 7. For this reason, as shown in FIG. 5, in the front view seen from the front, the other arm 86 of the link member 81 of the connecting member 8 is clockwise around the central axis O1 (from the state shown by the two-dot chain line to the solid line). Rotate as shown).

  When the plunger 71 is in the retracted state (the shortened state shown by the solid line in FIG. 5), as shown in FIG. 5, the other arm of the link member 81 of the connecting member 8 in the front view as seen from the front. A clockwise force F8 is applied to 86 around the central axis O1. For this reason, a force F9 is applied to the edge of the connection hole 66 of the connection piece 65 of the movable shade 6 into which the distal end portion of the other arm 86 is inserted. This force F9 is broken down into an upward first component force F10 and a leftward second component force F11.

  The upward first component force F10 acts on the movable shade 6 as a force for rotating the movable shade 6 around the central axis O2 rearward (clockwise in the left side view as viewed from the left side as shown in FIG. 1). . For this reason, the stopper piece 67 of the movable shade 6 is in contact with the second stopper 107 of the bracket 10. As a result, the movable shade 6 is located at the second position as shown by the two-dot chain line in FIG. 1 and the solid line in FIG.

  On the other hand, the second component force F11 facing left acts on the movable shade 6 as a force for moving the movable shade 6 to the left along the central axis O2, as shown in FIGS. Therefore, the movable shade 6 is shifted to the left, and the left side surface of the right mounting piece 63 of the movable shade 6 abuts on the stepped surface 108 of the right rotation shaft 105 of the bracket 10. Thereby, the movable shade 6 is located in the 2nd position without backlash. The second component force F11 facing left is smaller than the first component force F10 facing upward, and is a force that can move the movable shade 6 to the left.

  When the movable shade 6 is shifted to the left, the right side surface of the left mounting piece 63 of the movable shade 6 is separated from the step surface 108 of the left rotating shaft 105 of the bracket 10 and the right side surface of the mounting piece 63. A gap SL is generated between the step surface 108 and the stepped portion 108. Even if this gap SL occurs, the movable shade 6 is shifted to the left by the second component force F11 facing left, and is positioned at the first position without play.

  At this time, a part of the reflected light that has been shielded by the movable shade 6 located at the first position until now is not shielded by the movable shade 6 located at the second position, and the movable shade located at the first position. The light advances to the projection lens 4 side along with the reflected light that is not shielded by 6. The reflected light that has traveled toward the projection lens 4 enters the projection lens 4 from the incident surface 40 of the projection lens 4 and is irradiated from the exit surface 41 of the projection lens 4 to the outside, that is, the front of the vehicle as a high beam light distribution pattern. The

  And the electricity supply to the coil of the solenoid 7 is interrupted. Then, the plunger 71 of the solenoid 7 moves forward along the central axis O3 from the retracted state by the spring force of the spring member 80 of the connecting member 8. As a result, as shown in FIG. 5, when viewed from the front, the one arm 82 of the spring member 80 of the connecting member 8, the one arm 83 of the link member 81, and the connecting portion 84 are anti-rotated around the central axis O1. It rotates in the clockwise direction (from the state shown by the solid line to the state shown by the two-dot chain line).

  Here, in the connecting member 8, the rigidity of the link member 81 is larger than the rigidity of the spring member 80. The other arm 85 of the spring member 80 is engaged and fixed to the hook 73 of the solenoid 7. For this reason, as shown in FIG. 5, in the front view seen from the front, the other arm 86 of the link member 81 of the connecting member 8 is counterclockwise around the central axis O1 (the two-dot chain line from the state shown by the solid line). In the state shown in FIG.

  At this time, as shown in FIG. 3, a counterclockwise force F4 is applied around the central axis O1 to the other arm 86 of the link member 81 of the connecting member 8 in a front view as viewed from the front. As a result, as described above, the movable shade 6 is shifted to the right and positioned without play at the first position. Then, a low beam light distribution pattern is emitted from the exit surface 41 of the projection lens 4 to the outside, that is, the front of the vehicle.

(Explanation of effect of embodiment)
The vehicular lamp 1 according to this embodiment has the above-described configuration and operation, and the effects thereof will be described below.

  In the vehicle lamp 1 in this embodiment, when the movable shade 6 is located at the first position by the link member 81 as shown in FIG. 3, the movable shade 6 is moved in one direction in the direction of the central axis O2 of the rotation shaft 105 ( A rightward second component force F <b> 7 that is a force that is shifted to the right) is transmitted to the movable shade 6. Further, in the vehicle lamp 1 according to this embodiment, when the movable shade 6 is located at the second position by the link member 81 as shown in FIG. A leftward second component force F <b> 11, which is a force biased in the direction (leftward), is transmitted to the movable shade 6. As a result, in the vehicular lamp 1 in this embodiment, when the movable shade 6 is located at the first position, the movable shade 6 is biased in one direction (right direction) in the direction of the central axis O2 of the rotation shaft 105. When the movable shade 6 is positioned at the second position, the movable shade 6 is offset in the other direction (left direction) in the direction of the central axis O2 of the rotation shaft 105. Thereby, the vehicular lamp 1 in this embodiment can suppress the shake of the movable shade 6 and suppress the change in the light distribution of the low beam light distribution pattern and the high beam light distribution pattern.

  In the vehicular lamp 1 according to this embodiment, the direction in which the driving force of the driving unit is applied and the forward / backward direction (center axis O3) of the plunger 71 is parallel to the left and right rotating shafts 105 (center axis O2) of the movable shade 6. Or it is almost parallel. As a result, in the vehicular lamp 1 according to this embodiment, the driving force for retracting the plunger 71 is smoothly transmitted to the other side of the movable shade 6 via the link member 81, and the spring force of the spring member 80 is Is smoothly transmitted to the one-way offset of the movable shade 6 and the forward movement of the plunger 71 via the link member 81. Thereby, the vehicular lamp 1 in this embodiment can reliably move the movable shade 6 in one direction and the other direction.

  In the vehicle lamp 1 according to this embodiment, as shown in FIGS. 2, 3, 5, and 7, the other arm 86 of the link member 81 (refer to the two-dot chain line in FIGS. 2 and 3) is movable. It is inclined with respect to the rotation axis of the shade 6 (see the center axis O2 of the one-dot chain line in FIGS. 2 and 3), and the other arm 86 of the link member 81 (two points in FIGS. 2 and 3). The rotation axis of the movable shade 6 (see the center axis O2 of the one-dot chain line in FIGS. 2 and 3) is in the positional relationship of the twist position. As a result, the vehicular lamp 1 according to this embodiment can reliably obtain the second component force F7 facing right and the second component force F11 facing left. Thereby, the vehicular lamp 1 in this embodiment can reliably suppress the shake of the movable shade 6 and can reliably suppress the change in the light distribution of the low beam light distribution pattern and the high beam light distribution pattern.

  In the vehicle lamp 1 according to this embodiment, the rotation axis of the other arm 86 of the link member 81, that is, the central axis O1, and the rotation axis of the movable shade 6, that is, the central axis O2, are as shown in FIGS. As shown in FIG. 7, they are in a positional relationship of torsional positions, and form a right angle or a substantially right angle in a plan view seen from above or a bottom view seen from below. As a result, the vehicular lamp 1 in this embodiment has components other than the downward first component force F6 and the rightward second component force F7, and the upward first component force F10 and the leftward second component force F11. Since the force can be reliably prevented from being decomposed, the rightward second component force F7 and the leftward second component force F11 are more reliably obtained. Thereby, the vehicular lamp 1 in this embodiment can more reliably suppress the shake of the movable shade 6 and more reliably suppress the change in the light distribution of the low beam light distribution pattern and the high beam light distribution pattern.

  In the vehicle lamp 1 according to this embodiment, a spring member 80 as an urging member of the connecting member 8 and a link member 81 as a driving force transmission member are integrally configured, so that it is compared with a conventional vehicle lamp. Thus, the number of parts can be reduced. Thereby, the vehicular lamp 1 in this embodiment can be simplified in configuration, and the manufacturing cost can be reduced.

  In the vehicle lamp 1 in this embodiment, one arm 82 that is one end of the spring member 80 and one arm 83 that is one end of the link member 81 are integrally connected via a connecting portion 84, and the connection The portion 84 is connected to the plunger 71 of the solenoid 7, the other arm 85 that is the other end of the spring member 80 is fixed to the case 70 of the solenoid 7, and the other arm that is the other end of the link member 81. 86 is connected to the movable shade 6 through a connection hole 66 of the connection piece 65. Thereby, the vehicular lamp 1 in this embodiment can reliably transmit the driving force of the plunger 71 of the solenoid 7 to advance and retract as the rotational force of the movable shade 6 to the movable shade 6 via the connecting member 8. For this reason, the vehicular lamp 1 according to this embodiment is configured so that the spring member 80 as the urging member of the connecting member 8 and the link member 81 as the driving force transmitting member are integrally configured, even if the second member is facing right. A component force F7 and a second component force F11 facing left are obtained. As a result, the vehicular lamp 1 according to this embodiment can suppress blurring of the movable shade 6 and suppress changes in the light distribution of the low beam light distribution pattern and the high beam light distribution pattern.

  In the vehicle lamp 1 in this embodiment, the rigidity of the link member 81 is larger than the rigidity of the spring member 80, and therefore, one arm 83 and the other arm 86 of the link member 81 are regarded as one rigid body. As a result, in the vehicular lamp 1 according to this embodiment, as the plunger 71 of the solenoid 7 moves forward and backward, one arm 83 of the link member 81 rotates counterclockwise and clockwise around the central axis O1 of the mounting shaft 104. When rotating, the other arm 86 of the link member 81 rotates clockwise and counterclockwise around the central axis O1. Thereby, the vehicular lamp 1 in this embodiment can reliably transmit the driving force of the plunger 71 of the solenoid 7 to advance and retract as the rotational force of the movable shade 6 to the movable shade 6 via the connecting member 8. For this reason, the vehicular lamp 1 in this embodiment can obtain the second component force F7 facing right and the second component force F11 facing left. As a result, the vehicular lamp 1 according to this embodiment can suppress blurring of the movable shade 6 and suppress changes in the light distribution of the low beam light distribution pattern and the high beam light distribution pattern.

  In the vehicular lamp 1 according to this embodiment, the spring member 80 and the link member 81 form a coil shape on the same axis, that is, the central axis O1 of the mounting shaft 104. That is, in the vehicle lamp 1 in this embodiment, the center line of the coil portion of the spring member 80 and the center line of the coil portion of the link member 81 are coincident or substantially coincide. Thereby, the vehicular lamp 1 in this embodiment can reliably transmit the driving force of the plunger 71 of the solenoid 7 to advance and retract as the rotational force of the movable shade 6 to the movable shade 6 via the connecting member 8. For this reason, the vehicular lamp 1 in this embodiment can obtain the second component force F7 facing right and the second component force F11 facing left. As a result, the vehicular lamp 1 according to this embodiment can suppress blurring of the movable shade 6 and suppress changes in the light distribution of the low beam light distribution pattern and the high beam light distribution pattern.

  The vehicular lamp 1 in this embodiment is a connection direction between the central axis O1 of the mounting shaft 104, one arm 82 of the spring member 80 of the connection portion 84, and one arm 83 of the link member 81, and the connection portion 84. The center line of the round bar is parallel or almost parallel. Thereby, the vehicular lamp 1 in this embodiment can reliably transmit the driving force of the plunger 71 of the solenoid 7 to advance and retract as the rotational force of the movable shade 6 to the movable shade 6 via the connecting member 8. For this reason, the vehicular lamp 1 in this embodiment can obtain the second component force F7 facing right and the second component force F11 facing left. As a result, the vehicular lamp 1 according to this embodiment can suppress blurring of the movable shade 6 and suppress changes in the light distribution of the low beam light distribution pattern and the high beam light distribution pattern.

  In the vehicular lamp 1 in this embodiment, the number of turns (effective number of turns) of the spring member 80 is larger than the number of turns (effective number of turns) of the link member 81, and the coil center diameter of the spring member 80 and the coil center diameter of the link member 81. Are identical or nearly identical. As a result, in the vehicular lamp 1 in this embodiment, the spring constant of the link member 81 is greater than the spring constant of the spring member 80, so the rigidity of the link member 81 is greater than the rigidity of the spring member 80. Thereby, the vehicular lamp 1 in this embodiment can reliably transmit the driving force of the plunger 71 of the solenoid 7 to advance and retract as the rotational force of the movable shade 6 to the movable shade 6 via the connecting member 8. For this reason, the vehicular lamp 1 in this embodiment can obtain the second component force F7 facing right and the second component force F11 facing left. As a result, the vehicular lamp 1 according to this embodiment can suppress blurring of the movable shade 6 and suppress changes in the light distribution of the low beam light distribution pattern and the high beam light distribution pattern.

  Moreover, in the vehicular lamp 1 in this embodiment, the number of turns (effective number of turns) of the spring member 80 is larger than the number of turns (effective number of turns) of the link member 81, and the coil center diameter of the spring member 80 and the coil of the link member 81 The center diameter is the same or almost the same. As a result, in the vehicular lamp 1 according to this embodiment, the length of the spring member 80 and the link member 81, that is, the connecting member 8 in the axial direction (in the direction of the center line of the coil portion and in the direction of the central axis O1 of the mounting shaft 104). However, the radial dimension can be reduced.

(Description of example other than embodiment)
In this embodiment, the number of turns (effective number of turns) of the spring member 80 is larger than the number of turns (effective number of turns) of the link member 81, and the coil center diameter of the spring member 80 and the coil center diameter of the link member 81 are Identical or nearly identical. However, in the present invention, the number of turns of the spring member 80 and the number of turns of the link member 81 may be the same or substantially the same, and the coil center diameter of the spring member 80 may be larger than the coil center diameter of the link member 81. In this case, the spring member 80 and the link member 81, that is, the connecting member 8, have a larger radial dimension, but the axial length can be shortened. In the present invention, the number of turns and the coil center diameter may be changed simultaneously. Furthermore, the number of turns, the coil center diameter, and the wire diameter may be arbitrarily combined.

  Further, in this embodiment, the movable shade 6 is attached to the bracket 10 so as to be switchable between the first position and the second position. However, in this invention, the movable shade 6 may be attached to an attachment member other than the bracket 10 so as to be able to switch between the first position and the second position.

  Furthermore, in this embodiment, the semiconductor type light source 2 is used as a light source. However, in the present invention, the light source may be a light source other than the semiconductor-type light source 2, for example, a discharge lamp light source, a halogen lamp light source, an incandescent lamp light source, or the like.

  Furthermore, in this embodiment, a projector-type vehicular lamp composed of a reflector 3 having a reflecting surface 30 based on an ellipse and a projection lens 4 will be described. However, in the present invention, a vehicle lamp other than the projector-type vehicle lamp, for example, a lens direct-light type vehicle lamp or a reflection-type vehicle lamp may be used.

  Furthermore, in this embodiment, the movable shade 6 is used as the movable light distribution optical control member. However, in the present invention, as the movable light distribution optical control member, a movable light distribution optical control member other than the movable shade 6, for example, the optical path (direction) of the light distribution is changed, or the light distribution is diffused or concentrated (focused). Or a filter member that transmits or shields light of a specific wavelength.

  Furthermore, in this embodiment, the solenoid 7 is used as a drive mechanism. However, in the present invention, the drive mechanism may be a drive mechanism other than the solenoid 7, such as a motor. The drive unit in the case of this motor serves as an output shaft.

  Furthermore, in this embodiment, the spring member 80 comprised from one torsion coil spring (torsion coil spring) is used as a biasing member. However, in the present invention, a spring member other than the spring member 80 constituted by a single torsion coil spring (torsion coil spring) may be used as the biasing member.

  Furthermore, in this embodiment, the link member 81 comprised from one torsion coil spring (torsion coil spring) is used as a driving force transmission member. However, in the present invention, a link member other than the link member 81 formed of one torsion coil spring (torsion coil spring) may be used as the driving force transmission member.

1 Vehicle lamp 10 Bracket (Mounting member)
11 Holder (Mounting member)
DESCRIPTION OF SYMBOLS 101 1st board part 102 2nd board part 103 3rd board part 104 Attachment shaft 105 Rotating shaft 106 1st stopper 107 2nd stopper 108 Step part surface 109 Shaft part 2 Semiconductor type light source (light source)
DESCRIPTION OF SYMBOLS 20 Light emission part 21 Holder 3 Reflector 30 Reflective surface 4 Projection lens 40 Incidence surface 41 Output surface 5 Heat sink member 50 Upper board part 52 Fin part 6 Movable shade (movable light distribution optical control member)
61 1st shade 62 2nd shade 63 Attachment piece 64 E ring 65 Connection piece 66 Connection hole 67 Stopper piece 7 Solenoid (drive mechanism)
70 Case 71 Plunger (Driver)
72 slit 73 hook 8 connecting member 80 spring member (biasing member)
81 Link member (driving force transmission member)
82 One arm 83 One arm 84 Connection portion 85 The other arm 86 The other arm 87 E-ring B Rear D Lower F Front F1 First focus F2 Second focus F3 Focus F4 Counterclockwise force F5 Force F6 Downward first 1 component force F7 2nd component force to the right F8 force in the clockwise direction F9 force F10 1st component force in the upward direction F11 2nd component force in the left direction L left O1 center axis of the mounting shaft O2 center axis of the rotating shaft O3 center of the plunger Axis R Right SL Gap SR Gap U Top Z Optical axis

Claims (9)

A light source;
A heat sink member to which the light source is attached;
A bracket attached to the heat sink member;
The bracket is mounted so as to be able to switch between a first position and a second position about a rotation axis and to be movable in the direction of the rotation axis, and optically controls light from the light source to a predetermined light distribution A movable light distribution optical control member,
A biasing member that is interposed between the bracket and the movable light distribution optical control member, and biases the movable light distribution optical control member to the first position;
A driving force transmission member attached to the bracket so as to be rotatable about a rotation axis and connected to the movable light distribution optical control member;
The movable light distribution that is attached to the bracket and has a drive unit to which the drive force transmission member is coupled, and is located at the first position via the drive force transmission member by the drive force of the drive unit. A drive mechanism for switching the light distribution by rotating the optical control member against the biasing force of the biasing member to switch to the second position;
With
The driving force transmission member controls the movable light distribution optical control to force the movable light distribution optical control member to be shifted in one direction of the rotation axis when the movable light distribution optical control member is located at the first position. A force transmitted to the member and biasing the movable light distribution optical control member in the other direction of the rotation axis to the movable light distribution optical control member when the movable light distribution optical control member is located at the second position. introduce,
A vehicular lamp characterized by the above. The direction of action of the driving force of the driving unit is parallel or substantially parallel to the rotation axis of the movable light distribution optical control member.
The vehicular lamp according to claim 1. The driving force transmission member is inclined with respect to the rotation axis of the movable light distribution optical control member.
The vehicular lamp according to claim 1 or 2. The rotational axis of the movable light distribution optical control member and the rotational axis of the driving force transmission member are in a positional relationship of torsional positions, and form a right angle or a substantially right angle.
The vehicular lamp according to any one of claims 1 to 3. The biasing member is composed of a spring member,
The driving force transmission member is composed of a link member,
One end of the spring member and one end of the link member are integrally connected via a connection portion,
The connecting part is connected to the driving part,
The other end of the spring member is fixed to the drive mechanism,
The other end of the link member is connected to the movable light distribution optical control member,
The vehicular lamp according to any one of claims 1 to 4, wherein the vehicular lamp is provided. The rigidity of the link member is greater than the rigidity of the spring member.
The vehicular lamp according to claim 5. The spring member and the link member form a coil shape on the same axis,
The vehicular lamp according to claim 5 or 6. The connecting portion is made of a wire, and the connecting portion made of a wire and the same axis are parallel or substantially parallel.
The vehicular lamp according to claim 7. The number of turns of the spring member is larger than the number of turns of the link member, or the coil center diameter of the spring member is larger than the coil center diameter of the link member.
The vehicular lamp according to claim 7 or 8, wherein the vehicular lamp is provided.

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