CN110630973A - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

Info

Publication number
CN110630973A
CN110630973A CN201810558238.4A CN201810558238A CN110630973A CN 110630973 A CN110630973 A CN 110630973A CN 201810558238 A CN201810558238 A CN 201810558238A CN 110630973 A CN110630973 A CN 110630973A
Authority
CN
China
Prior art keywords
optical axis
lamp
adjusting screw
axis adjusting
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810558238.4A
Other languages
Chinese (zh)
Inventor
立岩丈幸
高须良平
大久保胜彦
原田竜彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Priority to CN201810558238.4A priority Critical patent/CN110630973A/en
Publication of CN110630973A publication Critical patent/CN110630973A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/30—Fog lights

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

An optical axis adjusting screw (40) for rotating an optical member (30) about a rotation axis (Ax1) extending in a vehicle width direction is supported by a lamp body (12) in a state of extending in a vertical direction on a rear side of the vehicle lamp (10) with respect to the rotation axis (Ax 1). A projection piece (34B) extending toward the rear of the vehicle lamp (10) is formed on the optical component (30), and a groove part (34Ba) in threaded engagement with a threaded part (40a) of the optical axis adjusting screw (40) is formed on the rear end surface of the optical component. The groove portion (34Ba) of the projecting piece (34B) and the thread portion (40a) of the optical axis adjusting screw (40) can maintain a screw engagement state.

Description

Vehicle lamp
Technical Field
The present invention relates to a vehicle lamp configured to perform light distribution control of light from a light source by an optical member.
Background
Conventionally, as a vehicle lamp configured to control light distribution of light from a light source by an optical member such as a lens, there is known a vehicle lamp configured such that: the optical member is rotatable relative to the housing.
Patent document 1 describes, as such a vehicle lamp, a configuration as follows: the optical member is rotated about a rotational axis extending in a first direction intersecting with a front-rear direction of the lamp by an optical axis adjusting screw supported by the housing.
The optical component described in patent document 1 has the following structure: a pair of protruding pieces extending toward the rear of the lamp are formed at the end portions in the first direction thereof, and a groove portion formed on the side surfaces of the two protruding pieces facing each other is threadedly engaged with the optical axis adjusting screw.
Documents of the prior art
Patent document
Patent document 1: japanese national laid-open publication No. 2015-522929
In the vehicle lamp described in patent document 1, it is necessary to screw the pair of protruding pieces into the optical axis adjusting screw in the groove portion thereof when assembling the lamp. Therefore, there is room for improvement in order to improve the degree of freedom in assembling the lamp and improve the assembling workability.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicle lamp configured to control light distribution of light from a light source by an optical member, in which assembly workability can be improved even when a structure in which the optical member is rotatable with respect to a housing is configured.
Disclosure of Invention
The present invention is designed to achieve the above object by designing the structure of the optical member and the optical axis adjusting screw.
That is, a vehicle lamp according to an aspect of the present invention is configured to perform light distribution control of light from a light source by an optical member, and includes:
a housing that supports the optical member so as to be rotatable about a rotation axis extending in a first direction intersecting with a front-rear direction of the lamp;
an optical axis adjusting screw for rotating the optical member around the rotation axis with respect to the housing;
the optical axis adjusting screw is supported by the housing in a state of being arranged to extend in a second direction on a lamp rear side with respect to the rotational axis, the second direction intersecting with a lamp front-rear direction and the first direction,
the optical member is formed with a projecting piece extending toward the rear of the lamp,
a groove portion that is threadedly engaged with the optical axis adjusting screw is formed in a rear end surface of the protruding piece.
In addition, the present invention can achieve the above object by devising the structure of the optical member.
That is, a vehicle lamp according to an aspect of the present invention is configured to perform light distribution control of light from a light source by an optical member, and includes:
a housing that supports the optical member so as to be rotatable about a rotation axis extending in a first direction intersecting with a front-rear direction of the lamp;
an optical axis adjusting screw for rotating the optical member around the rotation axis with respect to the housing;
the optical axis adjusting screw is supported by the housing in a state of being arranged to extend in a second direction intersecting with a front-rear direction of the lamp and the first direction,
a projection piece extending toward the rear of the lamp is formed at the end of the optical member in the first direction,
a groove portion which is screwed with the optical axis adjusting screw is formed on the inner side surface of the rear region of the protruding piece which is positioned at the rear side of the lamp than the rotating axis,
in the housing, a separation preventing portion for preventing the groove portion of the protruding piece from being separated from the state of being screwed with the optical axis adjusting screw is formed in a position close to or in contact with the outer side surface of the rear region of the protruding piece.
The optical member is configured such that the groove portion formed on the rear end surface is threadedly engaged with the optical axis adjusting screw, and therefore, the threaded engagement state of the groove portion of the protruding piece and the optical axis adjusting screw can be maintained.
Therefore, at the time of lamp fitting assembly, only a single projecting piece may be screwed with the optical axis adjusting screw at the groove portion thereof, whereby the degree of freedom of lamp fitting assembly can be improved, and therefore, the assembling workability of the vehicle lamp can be improved.
As described above, according to the present invention, in the vehicle lamp configured to control the light distribution of the light from the light source by the optical member, even when the optical member is configured to be rotatable with respect to the housing, the assembling workability can be improved.
Further, according to the present invention, the optical member can be reduced in weight and space by making the protrusion sheet single.
Drawings
Fig. 1 is a sectional view showing a vehicle lamp according to a first embodiment of the present invention;
FIG. 2 is a sectional view taken along line II-II of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 4;
fig. 6 is a view similar to fig. 3 showing a first modification;
fig. 7 is a partially enlarged view showing a second modification, and is the same as fig. 3;
fig. 8 is a partially enlarged view showing a third modification, and is the same as fig. 4;
FIG. 9 is an enlarged partial view of FIG. 8;
fig. 10 is a partially enlarged view showing a fourth modification, and is the same as fig. 2;
fig. 11 is a sectional view showing a vehicle lamp of a second embodiment;
FIG. 12 is a sectional view taken along line II-II of FIG. 11;
FIG. 13 is an enlarged partial view of FIG. 11;
FIG. 14 is an enlarged partial view of FIG. 12;
FIG. 15 is a cross-sectional view taken along line V-V of FIG. 13;
FIG. 16 is a sectional view taken along line VI-VI of FIG. 13;
fig. 17 is a diagram illustrating the operation of the second embodiment;
fig. 18 is a partially enlarged view showing a first modification of the second embodiment, and is the same view as fig. 14;
FIG. 19 is a cross-sectional view taken along line b-b of FIG. 18;
fig. 20 is a partially enlarged view showing a second modification of the second embodiment, and is the same as fig. 14;
fig. 21 is a partially enlarged view showing a third modification of the second embodiment, and is the same as fig. 13;
fig. 22 is a partially enlarged view showing a fourth modification of the second embodiment, and is the same as fig. 13;
fig. 23 is a partially enlarged view showing a fifth modification of the second embodiment, and is the same as fig. 13;
fig. 24 is a partially enlarged view showing a sixth modification of the second embodiment, and is the same as fig. 16;
fig. 25 is a partially enlarged view showing a seventh modification of the second embodiment, and is similar to fig. 16.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
(first embodiment)
Fig. 1 is a sectional view showing a vehicle lamp 10 according to an embodiment of the present invention. Fig. 2 is a sectional view taken along line II-II of fig. 1.
As shown in fig. 1 to 2, a vehicle lamp 10 is a fog lamp provided at a front right end portion of a vehicle, and includes a light source 20 and an optical member 30 for controlling light distribution from the light source 20, which are accommodated in a lamp chamber formed by a lamp body 12 as a housing and a transparent light-transmitting cover 14 attached to a front end opening portion thereof.
In fig. 1, the + X direction is the front of the vehicle lamp 10, and the + Y direction is the left direction orthogonal to the front of the vehicle lamp 10. The front-rear direction of the vehicle lamp 10 is the + X to-X direction of fig. 1. The vertical direction of the vehicle lamp 10 is a direction orthogonal to the XY plane, and is the + Z to-Z direction shown in fig. 2.
The front (+ X direction) of the vehicle lamp 10 of fig. 1 is the front direction of the vehicle, and is the front direction of the vehicle lamp 10. The left direction (+ Y direction) of the vehicle lamp 10 is the left direction of the vehicle. The + Y direction in fig. 1 is the right direction of the vehicle when viewed from the front of the vehicle lamp 10. The + Y to-Y directions in fig. 1 are the left and right directions of the vehicle lamp 10, and are the vehicle width directions of the vehicle.
The light source 20 is a white light emitting diode having a horizontally long rectangular light emitting surface 20a extending in the vehicle width direction (i.e., the left-right direction), and is supported on the rear wall 12c of the lamp body 12 via a substrate 22 having a heat radiation function in a state where the light emitting surface 20a is directed in the front direction of the lamp (i.e., the front of the vehicle).
The optical member 30 includes a lens 32 and a lens holder 34, the lens 32 controls the deflection of the light emitted from the light source 20, and the lens holder 34 supports the lens 32. The lens 32 and the lens holder 34 are both members made of transparent resin, and are integrated by welding, fitting, or the like.
The lens 32 is disposed on the front side (+ X side) of the light source 20. The optical axis Ax of the lens 32 extends in the front-rear direction of the lamp in the vicinity below the light-emitting surface 20a (fig. 2). The lens 32 has a convex front surface and a flat rear surface. In the XY plane of fig. 1, the lens 32 is disposed in a state inclined toward the rear side of the lamp from the left end to the right end of the lens 32. As shown by the arrows in fig. 2, the lens 32 emits light that is slightly downward and largely diffused in the vehicle width direction toward the front of the lamp, thereby forming a light distribution pattern for a fog lamp in front of the vehicle.
The lens holder 34 is configured as an annular member that supports the outer peripheral edge portion of the lens 32. The lens holder 34 includes: a main body portion 34A formed along the rear surface of the lens 32 from the left end portion toward the right end portion and inclined toward the rear of the lamp; the leg portions 34L and 34R are formed in a pair on both left and right sides of the main body portion 34A.
The optical member 30 is supported by the pair of left and right leg portions 34L, 34R so as to be rotatable about a rotation axis Ax1 with respect to the lamp body 12, the rotation axis Ax1 extending in the vehicle width direction (i.e., the horizontal direction orthogonal to the optical axis Ax). The vehicle width direction is a direction intersecting the front-rear direction of the vehicle lamp 10, and is an example of the first direction.
A specific structure for realizing the above vehicle lamp is as follows.
That is, the pair of right and left leg portions 34L, 34R are formed to protrude in both right and left directions from both right and left side portions of the main body portion 34A of the lens holder 34 in a plan view, and then extend in a plate shape toward the rear of the lamp. Fulcrum protrusions 34La, 34Ra protruding outward on the rotation axis Ax1 are formed on the outer side surfaces (i.e., the side surfaces on the opposite side from the optical axis Ax) of the rear end portions of the leg portions 34L, 34R.
As shown in fig. 2, the pair of right and left leg portions 34L, 34R are each formed to extend in a tongue-like shape from the main body portion 34A of the lens holder 34 toward the rear of the lamp in a side view. As shown in fig. 1, as the main body portion 34A of the lens holder 34 is inclined toward the rear of the lamp from the left end toward the right end, the left leg 34L is formed longer than the right leg 34R. Each of the pair of left and right fulcrum projections 34La and 34Ra is formed in a truncated cone shape, and the base end thereof is formed in a columnar shape. The base end portions of the fulcrum projections 34La and 34Ra have a longer length in the + Y to-Y directions of the left fulcrum projection 34La than the length in the + Y to-Y directions of the right fulcrum projection 34 Ra.
In the optical component 30, the fulcrum protrusion 34Ra of the right leg 34R of the lens holder 34 is inserted into the recess 12a1 formed in the inner surface of the right side wall 12a of the lamp body 12, and the fulcrum protrusion 34La of the left leg 34L is inserted into the through hole 12b1 formed in the left side wall 12b of the lamp body 12. By mounting in this manner, the optical member 30 is supported rotatably about the rotation axis Ax1 with respect to the lamp body 12. A plug member 16 is attached to the left side wall 12b of the lamp body 12 from the outer surface side of the left side wall 12b, and the plug member 16 is used to plug the through hole 12b 1.
Fig. 3 is a partially enlarged view of fig. 1, and fig. 4 is a partially enlarged view of fig. 2.
As shown in fig. 3 to 4, the lamp body 12 is configured such that a left rear end portion thereof is a protruding portion 12d protruding from the rear wall 12c toward the lamp rear side. At a lower wall portion of the protruding portion 12d, an optical axis adjusting screw 40 for rotating the optical component 20 about a rotation axis Ax1 is rotatably supported about an axis Ax2 extending in the vertical direction. The optical axis adjusting screw 40 is disposed on the rear side of the vehicle lamp 10 with respect to the rotation axis Ax1 so as to extend in the vertical direction (an example of the second direction). The second direction is a direction intersecting the front-rear direction and the first direction of the vehicle lamp 10.
The optical axis adjusting screw 40 is a resin-made member, and as shown in fig. 2 and 4, is formed such that the diameter thereof gradually decreases from the lower end portion toward the upper end portion, and a screw portion 40a is formed at the upper end portion. The threaded portion 40a is a crowned worm. The drum worm is formed so that a portion having a height equal to a position in the + Z to-Z direction of the optical axis Ax shown in fig. 4 has a minimum diameter and the diameter gradually increases toward both upper and lower edges. The threaded portion 40a is formed such that its diameter increases along an arc a (see fig. 4) centered on the rotation axis Ax 1.
The optical axis adjusting screw 40 is supported by the lamp body 12 at a shaft portion 40b of the optical axis adjusting screw 40 located at the middle in the vertical direction, in a state where the screw portion 40a is exposed in the lamp chamber and the lower end portion of the optical axis adjusting screw 40 is exposed in the outer space of the lamp chamber.
A screwdriver insertion hole 40c is formed at a lower end portion of the optical axis adjusting screw 40. By inserting a driver, not shown, into the driver insertion hole 40c and operating it, the optical axis adjusting screw 40 can be rotated about the axis Ax 2. An O-ring 42 is attached to the shaft portion 40b of the optical axis adjusting screw 40, and the O-ring 42 ensures airtightness in the lamp chamber.
As shown in fig. 1 and 3, a projection piece 34B extending rearward of the vehicle lamp 10 is formed on the left side portion of the lens holder 34.
The projecting piece 34B is formed in a plate shape extending along a vertical plane parallel to the optical axis Ax in the vicinity of the right side of the left leg portion 34L. As shown in fig. 2 and 4, the projecting piece 34B is formed in the following shape when viewed from the side: the taper is gradually formed toward the rear of the vehicle lamp 10 with a position having the same height as the position in the + Z to-Z directions of the optical axis Ax as the center. Thus, the optical member 30 can be reduced in weight and space by simplifying the protrusion pieces 34B.
The rear end surface of the projecting piece 34B, on which a plurality of (specifically, two) groove portions 34Ba for screw engagement with the optical axis adjusting screw 40 are formed, is located on the lamp rear side (the vicinity of the front of the axis Ax 2) with respect to the rotation axis Ax 1. The plurality of groove portions 34Ba are located between a plurality of (specifically, three) protruding portions formed on the rear end surface of the protruding piece 34B, and portions of the rear end surface located on both upper and lower sides of the plurality of protruding portions are formed in a vertical plane shape at substantially the same position as the bottom portion of each groove portion 34 Ba.
When the optical member 30 is at the rotation reference position, which is the reference position for optical axis adjustment, the optical member is screwed with the screw portion 40a of the optical axis adjusting screw 40 around the position where the plurality of groove portions 34Ba are equal in height to the optical axis Ax.
Fig. 5 is a partially enlarged view of fig. 4.
As shown in fig. 5, each groove 34Ba is formed such that its vertical cross section extends linearly in the vehicle width direction in a substantially wedge shape. The vertical width (plate thickness) of each groove 34Ba is set to the same value (the same width) as the pitch of the screw portion 40a of the optical axis adjusting screw 40.
Over-rotation restricting portions 40d, 40e are formed on both upper and lower sides of the threaded portion 40a of the optical axis adjusting screw 40, and the over-rotation restricting portions 40d, 40e have a diameter larger than the diameter of both upper and lower end edges of the threaded portion 40 a. The upper overspeed rotation restricting portion 40d is formed in a disc shape in the XY plane. The XY plane of the lower overtravel limiting portion 40e is formed in a truncated cone shape.
When the optical member 30 is rotated by a predetermined angle or more from the reference rotation position beyond the normal optical axis adjustment angle range, each of the excessive rotation restricting portions 40d and 40e abuts against the upper end edge or the lower end edge of the rear end portion of the protruding piece 34B to restrict further rotation. For example, as shown in fig. 5, when the optical member 30 is rotated beyond the angular range (e.g., the range of about ± 4 °) indicated by the two-dot chain line and rotated to an angular range (e.g., the range of about ± 11 °) or more indicated by the broken line, the excessive rotation restricting portions 40d and 40e abut against the upper end edge or the lower end edge of the rear end portion of the protruding piece 34B, and further rotation of the optical member 30 is restricted.
A disengagement preventing portion 12d1 is formed in an upper portion of an inner surface of the rear wall portion in the extension portion 12d of the lamp body 12, and the disengagement preventing portion 12d1 prevents the groove portion 34Ba of the protruding piece 34B from being disengaged from the threaded portion 40a of the optical axis adjusting screw 40 by flexural deformation of the optical axis adjusting screw 40. The separation preventing portion 12d1 is formed to protrude from the protruding portion 12d toward the lamp chamber interior in a positional relationship close to the outer peripheral surface of the upper over-rotation restricting portion 40 d.
Specifically, the dimension of the gap between the disengagement preventing portion 12D1 and the outer peripheral surface of the over-rotation restricting portion 40D is C, and the dimension of the effective full-tooth height in the state where the groove portion 34Ba of the projecting piece 34B is screwed into the screw portion 40a of the optical axis adjusting screw 40 is D, and at this time, the disengagement preventing portion 12D1 is formed such that the dimension C is smaller than the dimension D. The dimension C is, for example, approximately (0.2 to 0.6). times.D.
The function of the separation preventing portion 12d1 is explained as follows.
That is, in the optical component 30, since the heavy lens 32 is positioned on the front side (+ X direction side) of the rotation axis Ax1, a torque is generated to rotate the projection piece 34B in a direction to push the projection piece 34B upward (the torque is indicated by an arrow in fig. 4). Therefore, the screw portion 40a of the optical axis adjusting screw 40, which is in a state of being screwed into the groove portion 34Ba of the projection piece 34B, is in contact with the groove portion 34Ba of the projection piece 34B at its downward inclined surface and receives an upward pressing force (the pressing force is indicated by an arrow in fig. 5).
Thus, the optical axis adjusting screw 40 attempts to deflect its upper end portion toward the rear of the vehicle lamp 10 as indicated by the two-dot chain line in fig. 5, but when the deflection deformation is a certain degree, the upper over-rotation restricting portion 40d abuts against the disengagement preventing portion 12d1 to restrict further deflection deformation. Thereby, the groove portion 34Ba of the projecting piece 34 can be prevented from occurring before it is disengaged from the state of being screw-engaged with the screw portion 40 a.
Next, the operation and effects of the present embodiment will be described.
The vehicle lamp 10 of the present embodiment includes an optical axis adjusting screw 40, and the optical axis adjusting screw 40 rotates the optical member 30 with respect to the lamp body 12 (housing) about a rotation axis Ax1 extending in the vehicle width direction (a first direction intersecting the lamp front-rear direction). The optical axis adjusting screw 40 is supported by the lamp body 12 in a state of being arranged to extend in the vertical direction (the second direction intersecting the lamp front-rear direction and the first direction) on the rear side of the vehicle lamp 10 with respect to the rotational axis Ax 1. The optical member 30 of the vehicle lamp 10 is formed with a protruding piece 34B extending rearward of the vehicle lamp 10. A groove portion 34Ba that is threadedly engaged with the threaded portion 40a of the optical axis adjusting screw 40 is formed in the rear end surface of the projecting piece 34B. The vehicle lamp 10 configured as described above can obtain the following operational effects.
That is, the optical component 30 is configured to be screwed into the screw portion 40a of the optical axis adjusting screw 40 in the groove portion 34Ba formed on the rear end surface, not the side surface, of the projecting piece 34B. This can maintain the state in which the groove portion 34Ba of the projection piece 34B is screwed with the screw portion 40a of the optical axis adjusting screw 40. Therefore, the optical member 30 may not have a structure including a pair of conventional protruding pieces.
Therefore, when assembling the vehicle lamp 10, only the single projecting piece 34B is required to be screwed into the optical axis adjusting screw 40 at the groove portion 34Ba thereof, whereby the degree of freedom of assembly of the vehicle lamp 10 can be improved, and therefore, the assembling workability of the vehicle lamp 10 can be improved.
As described above, according to the present embodiment, in the vehicle lamp 10 configured to control the light distribution of the light from the light source 20 by the optical member 30, even when the optical member 30 is configured to be rotatable with respect to the lamp body 12, the assembling workability can be improved.
Further, as in the present embodiment, the weight and space saving of the optical member 30 can be achieved by simplifying the protruding pieces 34 Ba.
In the present embodiment, the screw portion 40a of the optical axis adjusting screw 40 that is screwed into the groove portion 34Ba of the projection piece 34B is formed by a drum worm, and therefore, the state in which the projection piece 34B is screwed into the optical axis adjusting screw 40 can be easily maintained. Thereby, it is possible to effectively suppress the groove portion 34Ba of the projection piece 34B from being disengaged from the state of being screw-engaged with the screw portion 40a of the optical axis adjusting screw 40 due to vehicle vibration or the like.
In the present embodiment, the optical axis adjusting screw 40 is provided with the over-rotation restricting portions 40d and 40e, and the over-rotation restricting portions 40d and 40e abut against the rear end portion of the protruding piece 34B to restrict over-rotation when the optical member 30 is rotated by a predetermined angle or more from the rotation reference position. Therefore, it is possible to prevent the groove portion 34Ba of the projecting piece 34B from occurring before it is disengaged from the state of being screw-engaged with the threaded portion 40a of the optical axis adjusting screw 40 due to the optical axis adjustment more than necessary.
Further, in the present embodiment, a disengagement preventing portion 12d1 is formed in the projecting portion 12d of the lamp body 12 in a positional relationship close to the optical axis adjusting screw 40, and the disengagement preventing portion 12d1 prevents the groove portion 34Ba of the projecting piece 34B from being disengaged from the state of being screw-engaged with the screw portion 40a of the optical axis adjusting screw 40 by flexural deformation of the optical axis adjusting screw 40. Therefore, a state in which the groove portion 34Ba of the projecting piece 34B is screw-engaged with the screw portion 40a of the optical axis adjusting screw 40 can be further ensured. Thereby, it is possible to more effectively suppress the groove portion 34Ba of the projection piece 34B from being disengaged from the state of being screwed with the threaded portion 40a of the optical axis adjusting screw 40 due to vehicle vibration or the like.
In the above embodiment, the two groove portions 34Ba are formed in the rear end surface of the projecting piece 34B, but one or three or more groove portions 34Ba may be formed.
In the above embodiment, the separation preventing portion 12d1 formed in the extension portion 12d of the lamp body 12 is disposed in a positional relationship close to the outer peripheral surface of the over-rotation restricting portion 40d of the protruding piece 34B, but the present invention is not limited to this configuration. The disengagement preventing portion 12d1 may be disposed in a positional relationship such that it contacts the outer peripheral surface of the over-rotation restricting portion 40d of the protruding piece 34B.
In the above embodiment, the light source 20 is supported by the rear wall 12c of the lamp body 12 via the substrate 22, but the present invention is not limited to this configuration. The light source 20 may be supported by a socket via the base plate 22, and the socket may be detachable from the rear wall 12c of the lamp body 12.
In the above-described embodiment, the case supporting the optical member 30 is the lamp body 12, but other lamp structural members (for example, a frame member supported by the lamp body 12) may be employed.
(first embodiment first modification)
Next, a modified example of the first embodiment will be described.
First, a first modification of the first embodiment will be described.
Fig. 6 is a partially enlarged view of the vehicle lamp 110 according to the modification, and is similar to fig. 3.
As shown in fig. 6, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the projection piece 134B of the optical member is partially different from that of the projection piece 34B of the above embodiment.
That is, similarly to the projection piece 34B of the above-described embodiment, the projection piece 134B of the present modification is formed to extend in a plate shape along a vertical plane parallel to the optical axis Ax (see fig. 3) in the vicinity of the right side of the left leg portion 134L. A plurality of groove portions 134Ba that are screwed into the screw portion 40a of the optical axis adjusting screw 40 are formed on the rear end surface of the projection piece 134B.
On the other hand, in the projection piece 134B of the present modification, the groove portions 134Ba are formed so as to extend along an arc centered on the axis Ax2 of the optical axis adjusting screw 40, rather than linearly extending in the vehicle width direction. In other words, the groove portion 134Ba is formed to extend along an arc centered on the axis extending in the second direction, which is different from the projection piece 34B in this point.
By adopting the configuration of the present modification, the range in which the groove portion 134Ba of the projection piece 134B is screwed with the screw portion 40a of the optical axis adjusting screw 40 can be enlarged. This can further secure a state in which the groove portion 134Ba of the projection piece 134B is screwed with the screw portion 40a of the optical axis adjusting screw 40. In addition, it is possible to more effectively suppress the groove portion 134Ba of the projection piece 134B from being disengaged from the state of being screwed with the threaded portion 40a of the optical axis adjusting screw 40 due to vehicle vibration or the like.
(second modification of the first embodiment)
Next, a second modification of the above embodiment will be described.
Fig. 7 is a partially enlarged view of the vehicle lamp 210 according to the present modification, and is similar to fig. 3.
As shown in fig. 7, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the projection piece 234B of the optical member is partially different from that of the projection piece 34B of the above embodiment.
That is, similarly to the projection piece 34B of the above-described embodiment, the projection piece 234B of the present modification is formed to extend in a plate shape along a vertical plane parallel to the optical axis Ax (see fig. 3) in the vicinity of the right side of the left leg portion 234L. A plurality of groove portions 234Ba that are screwed into the screw portion 40a of the optical axis adjusting screw 40 are formed on the rear end surface of the projecting piece 234B.
On the other hand, in the projecting piece 234B of the present modification, the groove portions 234Ba are formed so as to extend along an arc having a larger curvature radius than an arc centered on the axis Ax2 of the optical axis adjusting screw 40, rather than linearly extending in the vehicle width direction, and the thickness dimension of the projecting piece 234B is set to be larger than the thickness dimension of the projecting piece 34B of the above-described embodiment, and is different from the projecting piece 34B in these points.
Even in the case of adopting the configuration of the present modification, the range in which the groove portion 234Ba of the projecting piece 234B is screwed with the screw portion 40a of the optical axis adjusting screw 40 can be enlarged. This can further secure a state in which the groove portion 234Ba of the projection piece 234B is screwed with the screw portion 40a of the optical axis adjusting screw 40. In addition, it is possible to more effectively suppress the groove portions 234Ba of the projection pieces 234B from being disengaged from the state of being screwed with the threaded portion 40a of the optical axis adjusting screw 40 due to vehicle vibration or the like.
(third modification of the first embodiment)
Next, a third modification of the above embodiment will be described.
Fig. 8 is a partially enlarged view of the vehicle lamp 310 according to the present modification, and is similar to fig. 4.
As shown in fig. 8, the basic configuration of the present modification is the same as that of the above embodiment, but the configuration of the optical axis adjusting screw 340 is partially different from that of the optical axis adjusting screw 40 of the above embodiment. Accordingly, the configurations of the optical member 330 and the lamp body 312 are also partially different from those of the above-described embodiment.
That is, similarly to the optical axis adjusting screw 40 of the above embodiment, the optical axis adjusting screw 340 of the present modification is formed such that the diameter thereof gradually decreases from the lower end portion thereof toward the upper end portion thereof, and a screw portion 340a is formed at the upper end portion thereof.
On the other hand, the optical axis adjusting screw 340 of the present modification is different from the optical axis adjusting screw 40 in that the screw 340a is formed of the substantially half portion of the drum worm. That is, the distance from the most constricted portion of the drum worm to the upper end edge of the drum worm is longer than the distance to the lower end edge of the drum worm in the threaded portion 340a with respect to the most constricted portion (i.e., the portion having the smallest diameter) of the drum worm.
The optical axis adjusting screw 340 is disposed in a state where the screw 340a has a minimum diameter at the position of the optical axis Ax and gradually increases in diameter toward the upper end edge. That is, the threaded portion 340a is formed such that its diameter increases along an arc B centered on the rotation axis Ax 1.
The optical axis adjusting screw 340 is similar to the optical axis adjusting screw 40 of the above embodiment in that the screw 340a is exposed in the lamp chamber and the lower end portion thereof is exposed in the external space, and the shaft portion 340b located in the middle is supported by the lamp body 312, but is different from the optical axis adjusting screw 40 in that the shaft portion 340b is formed to have a larger diameter than the shaft portion 40b of the above embodiment.
The optical member 330 of the present modification example is also the same as the case of the above-described embodiment with respect to the lens 332 and the main body portion 334A, the leg portion 334L, and the like of the lens holder 334, but the configuration of the protruding piece 334B is different from that of the protruding piece 34B of the above-described embodiment.
Specifically, similarly to the projection piece 34B of the above-described embodiment, the projection piece 334B of the present modification is formed to extend in a plate shape along a vertical plane parallel to the optical axis Ax in the vicinity of the right side of the left leg portion 334L. A plurality of (specifically, two) groove portions 334Ba that are screwed into the screw portion 340a of the optical axis adjusting screw 340 are formed on the rear end surface of the projecting piece 334B so as to extend in the vehicle width direction.
On the other hand, the projection piece 334B of the present modification is different from the projection piece 34B of the above-described embodiment in that the plurality of groove portions 334Ba are configured to be screwed with the screw portion 340a at a substantially central position in the vertical direction (i.e., a position on the upper side than the optical axis Ax) of the formation region of the screw portion 340a of the optical axis adjusting screw 340 when the optical member 330 is at the rotation reference position.
Fig. 9 is a partially enlarged view of fig. 8.
As also shown in fig. 9, each of the groove portions 334Ba is formed to extend linearly in the vehicle width direction in a substantially wedge-shaped vertical cross-sectional shape, and the vertical width is set to the same value as the pitch of the screw portion 340a of the optical axis adjusting screw 340.
Over-rotation restricting portions 340d, 340e are formed on both upper and lower sides of the screw portion 340a of the optical axis adjusting screw 340. The upper overtravel limiting portion 340d is formed in a disc shape, and the lower overtravel limiting portion 40e is formed in a truncated cone shape. The over-rotation restricting portions 340d, 340e have a diameter larger than that of the upper end edge of the threaded portion 340 a.
When the optical member 330 is rotated by a predetermined angle or more from the reference rotation position beyond the normal optical axis adjustment angle range, the excessive rotation restricting portions 340d and 340e abut against the upper end edge or the lower end edge of the rear end portion of the protruding piece 334B to restrict further rotation. For example, as shown in fig. 9, when the optical member 330 is rotated by a predetermined angle or more beyond an angular range (e.g., a range of about ± 4 °) indicated by a two-dot chain line and rotated to an angular range (e.g., a range of about ± 11 °) or more indicated by a broken line, the over-rotation restricting portions 340d and 340e abut against the upper end edge or the lower end edge of the rear end portion of the protruding piece 334B to restrict further rotation of the optical member 330.
A disengagement preventing portion 312d1 is formed on an upper portion of an inner surface of the rear wall portion of the extension portion 312d of the lamp body 312, and this disengagement preventing portion 312d1 prevents the groove portion 334Ba of the protruding piece 334B from being disengaged from the threaded state with the threaded portion 40a of the optical axis adjusting screw 340 by flexural deformation of the optical axis adjusting screw 340. The separation preventing portion 312d1 is formed to protrude from the protruding portion 312d into the lamp chamber in a positional relationship close to the outer peripheral surface of the upper over-rotation restricting portion 340 d.
Specifically, the dimension of the gap between the disengagement preventing portion 312D1 and the outer peripheral surface of the upper over-rotation restricting portion 340D is C, and the dimension of the effective full-tooth height in the state where the groove portion 334Ba of the projecting piece 334B is screwed into the screw portion 340a of the optical axis adjusting screw 340 is D, and at this time, the disengagement preventing portion 312D1 is formed such that the dimension C is smaller than the dimension D. The dimension C is, for example, approximately (0.2 to 0.6). times.D.
The function of the disengagement preventing unit 312d1 is explained below.
That is, a torque is generated in the optical member 330 in a direction in which the protruding piece 334B is pushed upward (the torque is indicated by an arrow in fig. 8) to rotate the protruding piece 334B. Therefore, the screw portion 340a of the optical axis adjusting screw 340 in the state of being screwed into the groove portion 334Ba of the projection piece 334B is in contact with the groove portion 334Ba of the projection piece 334B at its downward slope and receives an upward pressing force (the pressing force is indicated by an arrow in fig. 9).
Thus, the optical axis adjusting screw 340 is intended to be deflected toward the rear of the lamp as indicated by the two-dot chain line in fig. 9 at its upper end, but when the deflection deformation is a certain degree, the upper over-rotation restricting portion 340d abuts against the disengagement preventing portion 312d1 to restrict further deflection deformation. Thereby, occurrence of the groove portions 334Ba of the projecting piece 334 can be prevented before being disengaged from the state of being screw-engaged with the screw portion 340 a.
Even in the case of adopting the configuration of the present modification, the same operational effects as in the case of the above-described embodiment can be obtained.
In the present modification, since the threaded portion 340a of the optical axis adjusting screw 340a is formed by the substantially half portion of the drum worm, the downward inclined surface of the threaded portion 340a can effectively receive the upward pressing force applied to the portion that is threadedly engaged with the groove portion 334Ba of the protruding piece 334B. This can further secure a state in which the projection piece 334B is screwed into the optical axis adjusting screw 340.
(fourth modification of the first embodiment)
Next, a fourth modification of the above embodiment will be described.
Fig. 10 is a sectional view showing a vehicle lamp 410 according to the present modification, and is similar to fig. 2.
As shown in fig. 10, the basic configuration of this modification is the same as that of the above embodiment, but the arrangement of the optical axis adjusting screw 440 is different from that of the optical axis adjusting screw 40 of the above embodiment. Accordingly, the configurations of the optical member 430 and the lamp body 412 are also partially different from those of the above-described embodiment.
That is, the optical axis adjusting screw 440 of the present modification is disposed in a state in which the optical axis adjusting screw 40 of the above embodiment is rotated upward by a predetermined angle (for example, about 10 ° to 30 °) about the rotation axis Ax 1. The optical axis adjusting screw 440 is disposed in a state of being inclined forward toward the lamp chamber.
The optical member 430 of the present modification example is also the same as the case of the above-described embodiment with respect to the lens 432 and the main body portion 434A and the leg portion 434L of the lens holder 434, but the configuration of the protruding piece 434B is different from that of the protruding piece 34B of the above-described embodiment.
Specifically, similarly to the projection piece 34B of the above-described embodiment, the projection piece 434B of the present modification is formed to extend in a plate shape along a vertical plane parallel to the optical axis Ax in the vicinity of the right side of the left leg portion 434L. A plurality of (specifically, two) groove portions 434Ba that are screwed into the screw portion 440a of the optical axis adjusting screw 440 are formed on the rear end surface of the projecting piece 434B so as to extend in the vehicle width direction.
On the other hand, the projection piece 434B of the present modification is different from the projection piece 34B of the above-described embodiment in that the plurality of groove portions 434Ba are configured to be screwed into the screw portion 440a at a substantially central position in the vertical direction (i.e., a position on the upper side of the optical axis Ax) of the formation region of the screw portion 440a of the optical axis adjusting screw 440 when the optical member 430 is at the rotation reference position.
The shape of the extension portion 412d of the lamp body 412 of the present modification is different from that of the above-described embodiment. A detachment prevention portion 412d1 is formed on an upper portion of the inner surface of the rear wall portion of the extension portion 412d of the lamp body 412. The disengagement preventing portion 412d1 is a member for preventing the groove portion 434Ba of the projecting piece 434B from being disengaged from the state of being screwed with the threaded portion 440a of the optical axis adjusting screw 440 by the flexural deformation of the optical axis adjusting screw 440. The disengagement preventing portion 412d1 is formed to protrude into the lamp chamber in a positional relationship close to the outer peripheral surface of the upper over-rotation restricting portion 440 d.
Even in the case of adopting the configuration of the present modification, the same operational effects as in the case of the above-described embodiment can be obtained.
In the present modification, since the optical axis adjusting screw 440a is disposed in the forward tilting state, the downward inclined surface of the screw portion 440a can effectively receive the pressing force that is applied upward to the portion where the optical axis adjusting screw 440 is screwed into the groove portion 434Ba of the projection piece 434B. This can further secure a state in which the groove portion 434Ba of the projection piece 434B is screwed into the screw portion 440a of the optical axis adjusting screw 440.
(second embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. The same or equivalent portions as those of the first embodiment are denoted by the same reference numerals in the drawings, and the description thereof will be omitted or simplified.
Fig. 11 is a sectional view showing a vehicle lamp 1110 according to a second embodiment. Fig. 12 is a sectional view taken along line II-II of fig. 11.
As shown in fig. 11 to 12, the vehicle lamp 1110 is a fog lamp provided at the front right end portion of a vehicle, and includes a light source 20 and an optical member 1130 for controlling the distribution of light from the light source 20, which are housed in a lamp chamber formed by a lamp body 1012 serving as a housing and a transparent light-transmitting cover 14 attached to a front end opening portion thereof. The lamp body 1012 is formed of an elastically deformable member.
The optical member 1130 includes a lens 32 and a lens holder 1134, the lens 32 controls the deflection of light emitted from the light source 20, and the lens holder 34 supports the lens 32. The lens 32 and the lens holder 1134 are both made of transparent resin and are integrated by welding, fitting, or the like.
The lens holder 1134 is configured as an annular member that supports the outer peripheral edge portion of the lens 32. The lens holder 1134 has a main body portion 1134A inclined toward the lamp rear side from the left end toward the right end along the rear surface of the lens 32, and has a pair of legs 1134L, 1134R formed on both the left and right sides thereof. The left leg 1134L and the right leg 1134R are formed of elastically deformable members. Further, left leg 1134L and right leg 1134R are configured to elastically deform independently of each other.
As with the optical component 30 of the above-described embodiment, the optical component 1130 is supported by the pair of left and right leg portions 1134L, 1134R so as to be rotatable about a rotation axis Ax1 with respect to the lamp body 1012, the rotation axis Ax1 extending in the vehicle width direction (i.e., the horizontal direction orthogonal to the optical axis Ax). The vehicle width direction is a direction intersecting the front-rear direction of the vehicle lamp 1110, and is an example of the first direction.
A specific structure for realizing the above vehicle lamp is as follows.
That is, the pair of right and left legs 1134L, 1134R are formed to protrude in both right and left directions from both right and left side portions of the main body portion 1134A of the lens holder 1134 in a plan view, and then extend in a plate shape toward the rear of the vehicle lamp 1110. Fulcrum protrusions 1134La, 1134Ra protruding outward on the rotation axis Ax1 are formed on the outer side surfaces of the rear end portions of the legs 1134L, 1134R (i.e., the side surfaces on the opposite side from the light source Ax).
The pair of right and left legs 1134L, 1134R are formed to extend like tongues from the main body 1134A of the lens holder 1134 toward the rear of the lamp in a side view, similarly to the legs 34L, 34R of the above-described embodiment. The pair of left and right fulcrum protrusions 1134La and 1134Ra are formed in the same manner as the fulcrum protrusions 34La and 34Ra of the above embodiment.
The optical member 1130 is supported to be rotatable about the rotation axis Ax1 with respect to the lamp body 1012 such that the fulcrum protrusion 1134Ra of the right leg 1134R of the lens holder 1134 is inserted into the recessed portion 1012a1 formed in the inner surface of the right side wall 1012a of the lamp body 1012, and the fulcrum protrusion 1134La of the left leg 1134L thereof is inserted into the through hole 1012b1 formed in the left side wall 1012b of the lamp body 1012.
Fig. 13 is a partial enlarged view of fig. 11, and fig. 14 is a partial enlarged view of fig. 12.
As shown in fig. 13 to 14, the lamp body 1012 has a left rear end portion configured as an extension portion 1012d extending from the rear wall 1012c toward the rear side of the vehicle lamp 1110. An optical axis adjusting screw 1140 is supported on a lower wall portion of the extension portion 1012d so as to be rotatable about an axis Ax2 extending in the vertical direction (an example of the second direction), and the optical axis adjusting screw 1140 is used to rotate the optical member 1130 about a rotation axis Ax 1. The second direction is a direction intersecting the front-rear direction and the first direction of the vehicle lamp 1110.
The optical axis adjusting screw 1140 is a resin-made member, and as shown in fig. 12 and 14, is formed such that the diameter gradually decreases from the lower end portion toward the upper end portion, and a screw portion 1140a is formed at the upper end portion. The threaded portion 1140a is formed of a metric thread. The optical axis adjusting screw 1140 is supported by the lamp body 1012 at the shaft portion 1140b and the shaft portion 1140b is positioned in the middle of the optical axis adjusting screw 1140 in a state where the screw portion 1140a is exposed in the lamp chamber and the lower end portion of the optical axis adjusting screw 1140 is exposed in the outer space of the lamp chamber.
As shown in fig. 11 and 13, a projection 1134B extending rearward of the vehicle lamp 1110 is formed on the left side portion of the lens holder 1134. The projecting piece 1134B is formed to extend in a plate shape on the same vertical plane as the leg 1134L on the left side. The rear end edge of the projecting piece 1134B is located on the rear side of the vehicle lamp 1110 with respect to the rotation axis Ax1, and is located on the rear side of the vehicle lamp 1110 with respect to the optical axis adjusting screw 1140.
As shown in fig. 12 and 14, the projecting piece 1134B is formed so as to surround the left leg 1134L from the main body portion 1134A of the lens holder 1134 to a portion located on the rear side of the vehicle lamp 1110 with respect to the rotational axis Ax1 via a substantially U-shaped slit 1134A in a side view. In other words, the projecting piece 1134B is formed so as to surround the leg portion 1134L at the same position as the leg portion 1134L in the vehicle width direction.
The rear region 1134Ba is located on the rear side of the vehicle lamp 1110 with respect to the slit 1134a, and the rear region 1134Ba extends with a substantially constant vertical width toward the rear of the vehicle lamp 1110 at a position having the same height as the position in the + Z to-Z directions of the optical axis Ax.
The outer side surface of the protruding piece 1134B is formed in a single plane.
The outer side surface of the projection 1134B is a side surface located farther from the optical axis Ax shown in fig. 11 and 13 among the side surfaces of the projection 1134B in the + Y to-Y directions, and is a side surface located on the opposite side of the optical axis Ax shown in fig. 11 and 13. The outer side surface of projection 1134B represents the side surface located on the opposite side of the inner side surface of projection 1134B in the first direction.
The inner surface of the projection 1134B is a side surface located closer to the optical axis Ax shown in fig. 11 and 13, out of the side surfaces of the projection 1134B in the + Y to-Y directions, and is a side surface located on the center side of the optical member 1130 in the first direction.
As shown in fig. 13, a step is formed in the middle portion of the rear region 1134Ba on the inner surface of the projecting piece 1134B, and the thickness of the portion of the rear region 1134Ba located on the rear side of the vehicle lamp 1110 with respect to the step is thinner than other general portions (portions of the rear region 1134Ba other than the step). A plurality of (specifically, three) groove portions 1134Ba1 for screwing with the optical axis adjusting screw 1140 are formed on the inner side surface of the thin portion. In addition, the inner surface of the rear region 1134Ba is located at both upper and lower sides of the plurality of grooves 1134Ba1, and the vertical cross-sectional shape thereof is formed in such a manner that one side portion of the groove 1134Ba1 is extended.
In this way, the optical member 1130 can be reduced in weight and space by simplifying the protrusion pieces 1134 Ba.
The optical member 1130 is screwed with the screw portion 1140a of the optical axis adjusting screw 1140 about a position where the plurality of groove portions 1134Ba1 are equal in height to the optical axis Ax when the optical member is at a rotation reference position constituting a reference position for optical axis adjustment.
In this way, the leg portions 1134L, 1134R extending rearward of the vehicle lamp 1110 are formed at the end portions of the optical member 1130 in the first direction, and in addition, the fulcrum protrusion portions 1134La, 1134Ra are formed at positions on the rotation axis Ax1 of the outer side surfaces of the leg portions 1134L, 1134R, and the fulcrum protrusion portions 1134La, 1134Ra are configured to support the optical member 1130 so as to be rotatable about the rotation axis Ax1 by engagement with the lamp body 1012, so that the following operational effects can be obtained.
That is, when the vehicle lamp 1110 is assembled, the projection 1134B and the legs 1134L, 1134R are brought into contact with the wall surface of the lamp body 1102, and can be elastically deformed independently of each other. This makes it possible to smoothly perform the following operations: the groove portions 1134Ba1 of the projecting pieces 1134B are threadedly engaged with the optical axis adjusting screw 1140; the support protrusions 1134La, 1134Ra of the legs 1134L, 1134R are engaged with the lamp body 1012.
In this case, legs 1134L and 1134R are formed in a tongue shape toward the rear of the lamp, and in addition, a projection 1134B is formed so as to surround legs 1134L and 1134R at substantially the same position as legs 1134L and 1134R in the first direction. With this configuration, the required width of the vehicle lamp 1110 in the first direction can be minimized, and the projecting piece 1134B and the leg portions 1134L, 1134R can be elastically deformed in a stable manner.
Fig. 15 is a sectional view taken along line V-V of fig. 13, and fig. 16 is a sectional view taken along line VI-VI of fig. 13.
As shown in fig. 15 to 16, each groove 1134Ba1 is formed in a substantially wedge-like shape in vertical cross section and extends in the front-rear direction of the lamp. The vertical width (plate thickness) of each groove 1134Ba1 is set to the same value (the same width) as the pitch of the screw portion 1140a of the optical axis adjusting screw 1140.
The rear region 1134Ba of the projecting piece 1134B has a tapered shape in plan view at a portion closer to the rear end edge of the inner side surface, and accordingly, the plurality of grooves 1134Ba1 have a zigzag shape in side view at the rear end surface.
The inner surface of the left side wall 1012b of the lamp body 1012 is formed to extend to the extension portion 1012d while maintaining a smooth planar shape. A disengagement preventing portion 1012B2 is formed at the rear end portion of the projecting portion 1012d, and this disengagement preventing portion 1012B2 is used to prevent the groove portions 1134Ba1 of the projecting pieces 1134B from being disengaged from the screw-engaged state with the optical axis adjusting screw 1140. The detachment prevention portion 1012b2 is formed to be thick by displacing a partial region of the rear end portion of the inner surface of the left side wall 1012b toward the inner surface side from the other general portions. The detachment prevention portion 1012B2 is formed in a positional relationship close to the outer side surface of the rear region 1134Ba of the projection 1134B. For example, the detachment prevention portion 1012B2 may be formed in a planar shape at a position facing the outer side surface of the rear region 1134Ba of the protruding piece 1134B of the inner surface of the left side wall 1012B of the lamp body 1012.
Specifically, as shown in fig. 16, the dimension of the gap between the disengagement preventing portion 1012B2 and the outer surface of the rear region 1134Ba of the projection piece 1134B is a, and the dimension of the effective full tooth height in the state where the groove portion 1134Ba1 of the rear region 1134Ba of the projection piece 1134B is in threaded engagement with the threaded portion 1140a of the optical axis adjusting screw 1140 is B, and at this time, the disengagement preventing portion 1012B2 is formed such that the dimension a is smaller than the dimension B. The dimension A is, for example, approximately (0.2 to 0.6). times.B.
Here, the rear region 1134Ba of the projection 1134B may be configured to be elastically deformed by a pressing force from the detachment prevention portion 1012B2 of the housing such as the lamp body 1012, and the specific shape thereof is not particularly limited.
As shown in fig. 15, the separation prevention portion 1012b2 is formed in an equiangular shape extending toward the front of the lamp about a position equally high in the + Z to-Z directions from the optical axis Ax in a side view. The front end edge of the disengagement prevention portion 1012b2 is located in the vicinity of the rotation axis Ax1 behind the lamp. As shown in fig. 16, the separation preventing portion 1012b2 is formed in a curved shape having a smooth outer peripheral edge. Specifically, the outer peripheral surface of the separation prevention part 1012b2 is formed by an inclined surface extending in a direction inclined at about 30 to 45 ° with respect to the plane perpendicular direction of the inner surface of the left side wall 1012b, and a chamfered portion R of about R0.5 to 1.0mm is formed at a ridge line portion between the outer peripheral surface and the inner side surface of the separation prevention part 1012b 2.
On the other hand, in the projection 1134B, a chamfer R of about R0.5 to 1.0mm is also formed at a ridge portion between the outer surface and the upper and lower end surfaces thereof.
The detachment prevention portion 1012B2 is formed in a positional relationship in which it approaches or contacts the outer side surface of the rear region of the projection piece 1134B, but the specific positional relationship is not particularly limited as long as it is within a range in which it can be prevented from being detached from a state in which the groove portion 1134Ba1 of the projection piece 1134B is threadedly engaged with the optical axis adjusting screw 1140.
The positions shown by solid lines in fig. 15 and 16 are the reference positions for the rotation of the optical member 1130. A pair of upper and lower disengagement permitting portions 1012B3, 1012B4 are formed on the inner surface of the left side wall 1012B of the lamp body 1012, and these disengagement permitting portions 1012B3, 1012B4 permit the groove portions 1134Ba1 of the projecting pieces 1134B to be disengaged from the threaded portion 1140a of the optical axis adjusting screw 1140 in a state of being screwed with the optical axis Ax1 when the optical component 1130 is rotated by a predetermined angle or more about the rotation axis Ax1 from the rotation reference position.
The upper disengagement permitting portion 1012b3 is composed of a side surface portion 1012b3a and an upper surface portion 1012b3b, the side surface portion 1012b3a is displaced toward the outer surface side with respect to the disengagement preventing portion 1012b2, and the upper surface portion 1012b3b is formed at a position offset upward from the optical axis Ax by a predetermined distance. The lower disengagement permitting portion 1012b4 includes a side surface portion 1012b4a and a lower surface portion 1012b4b, and the side surface portion 1012b4a is displaced toward the outer surface side with respect to the disengagement preventing portion 1012b2, and the lower surface portion 1012b4b is formed at a position offset to the lower side by a predetermined distance from the optical axis Ax. The side wall portions 1012b3a and 1012b4a are formed in the same plane as the general inner surface of the left side wall 1012 b. The upper surface portion 1012B3B and the lower surface portion 1012B4B are formed at positions where the projection pieces 1134B abut when the optical member 1130 is rotated by a predetermined angle or more (i.e., rotated to a position indicated by a broken line in fig. 15) beyond a normal optical axis adjustment angle range (i.e., an angle range indicated by a two-dot chain line in fig. 15) from the rotation reference position. The angular range indicated by the two-dot chain line shown in fig. 15 is, for example, a range of about ± 4 °. The angular range shown by the broken line in fig. 15 is, for example, around ± 11 °.
The functions of the disengagement permitting portions 1012b3 and 1012b4 are explained below.
That is, when the optical member 1130 is rotated to a large angle more than necessary from the rotation reference position by excessively performing the rotation operation of the optical axis adjusting screw 1140, as shown by the broken line in fig. 15, the rear end portion of the projecting piece 1134B abuts against the upper surface portion 1012B3B or the lower surface portion 1012B4B of the disengagement permitting portion 1012B3, and further rotation is restricted. When the optical axis adjusting screw 1140 is further rotated from this state, the projection piece 1134B is displaced in a direction away from the axis Ax2 (i.e., on the outer surface side) as shown by the broken line in fig. 16 by the pressing force received by the screw portion 1140 a. At this time, the side surface portions 1012B3a and 1012B4a of the disengagement permitting portions 1012B3 and 1012B4 are displaced toward the outer surface side with respect to the disengagement preventing portion 1012B2, and therefore, the groove portions 1134Ba1 of the projecting piece 1134B are disengaged from the state of being screwed with the screw portion 1140a of the optical axis adjusting screw 1140, and the optical axis adjusting screw 1140 idles.
In addition, even in such an idling state, since the projection piece 1134B is biased in the direction approaching the axis line Ax2 by the elastic force thereof, if the optical axis adjusting screw 1140 is rotated in the opposite direction, the groove portion 1134Ba1 of the projection piece 1134B is again screw-engaged with the screw portion 1140a of the optical axis adjusting screw 1140, and the optical member is rotated in the direction approaching the rotation reference position.
At this time, since the separation preventing portion 1012B2 has an inclined surface on its outer peripheral surface and a chamfer R is formed on the ridge line portion between the outer peripheral surface and the inner peripheral surface thereof and a chamfer R is also formed on the ridge line portion of the projecting piece 1134B, separation and return to the state from the state of being screwed with the screw portion 1140a of the optical axis adjusting screw 1140 of the groove portion 1134Ba1 of the projecting piece 1134B can be performed extremely smoothly.
Fig. 17 shows how the optical member 1130 is mounted on the lamp body 1012 in the present embodiment, and is a view similar to fig. 11.
As shown in fig. 17, in a state where the optical member 1130 is tilted, the rear end portions of the projection pieces 1134B and the fulcrum projection portions 1134La of the left leg portions 1134L are brought into contact with the inner surface of the left side wall 1012B of the lamp body 1012, and are elastically deformed. In this state, the right leg 1134R is inserted into the lamp body 1012, and the fulcrum protrusion 1134Ra of the leg 1134R is inserted into the recessed portion 1012a1 of the right side wall 1012a of the lamp body 1012. Thereafter, the optical member 1130 is pushed in such a manner that the optical member 1130 is rotated in the direction of the arrow shown in fig. 17 about the fulcrum protrusion 1134Ra, whereby the rear end portion of the protrusion 1134B and the fulcrum protrusion 1134La of the leg 1134L are moved toward the lamp rear side along the inner surface of the left side wall 1012B of the lamp body 1012. Then, the rear end of the projecting piece 1134B is placed on the separation preventing portion 1012B2 formed at the rear end of the inner surface of the left side wall 1012B, and then the fulcrum projecting portion 1134La of the leg portion 1134L is inserted into the through hole 1012B1 of the left side wall 1012B.
Thereby, the optical member is supported rotatably about the rotation axis Ax1 with respect to the lamp body 1012. At this time, the projecting piece 1134B is in a state in which a plurality of groove portions 1134Ba1 formed on the inner side surface thereof are screwed into the screw portion 1140a of the optical axis adjusting screw 1140, and the outer side surface thereof approaches the detachment prevention portion 1012B2 of the lamp body 1012.
As shown by the two-dot chain line in fig. 17, if the projection piece 1134B and the left leg 1134L are integrally formed as the configuration of the optical component, when the fulcrum projection 1134La of the leg 1134L abuts against the inner surface of the left side wall 1012B of the lamp body 1012, the projection piece 1134B is separated from the inner surface of the left side wall 1012B, and the rear end portion thereof interferes with the optical axis adjusting screw 1140. However, in the optical component 1130 of the present embodiment, since the projection 1134B and the left leg 1134L are elastically deformed independently of each other, such a problem does not occur, and the optical component 1130 can be smoothly assembled.
Next, the operation and effects of the present embodiment will be described.
In the vehicle lamp 1110 according to the present embodiment, the optical axis adjusting screw 1140 is supported by the lamp body 1012 in a state of being disposed to extend in the vertical direction (the second direction intersecting the lamp front-rear direction and the first direction), and the optical axis adjusting screw 1140 is used to rotate the optical member 1130 with respect to the lamp body 1012 (housing) about the rotational axis Ax1 extending in the vehicle width direction (the first direction intersecting the lamp front-rear direction). A projection 1134B extending rearward of the lamp is formed on the left end (end in the first direction) of the optical member 1130. The rear region 1134Ba is located on the lamp rear side of the rotation axis Ax1 of the projecting piece 1134B, and a groove portion 1134Ba1 that is screwed with the optical axis adjusting screw 1140 is formed on the inner surface of the rear region 1134 Ba. Further, a detachment prevention portion 1012B2 is formed in the lamp body 1012, and the detachment prevention portion 1012B2 prevents the groove portion 1134Ba1 of the projection piece 1134B from being detached from the state of being screw-engaged with the screw portion 1140a of the optical axis adjusting screw 1140. The detachment prevention portion 1012B2 is formed in a positional relationship close to the outer side surface of the rear region 1134Ba of the projection 1134B. Therefore, the following operational effects can be obtained.
That is, since the disengagement preventing portion 1012B2 is formed in the lamp body 1012, the state in which the groove portions 1134Ba1 of the projecting pieces 1134B are screwed with the screw portions 1140a of the optical axis adjusting screw 1140 can be maintained. This prevents the groove portions 1134Ba1 of the projection pieces 1134B from coming off from the threaded portion 1140a of the optical axis adjusting screw 1140 before the groove portions 1134Ba1 are disengaged from each other by vehicle vibration or the like. Therefore, as the structure of the optical member 1130, the state in which the groove portions 1134Ba1 of the projection pieces 1134B are screwed with the optical axis adjusting screw 1140 can be maintained without forming a structure including a pair of projection pieces as in the conventional art.
Since a is smaller than B, even if vibration or the like during vehicle traveling is applied to the vehicle lamp, the outer side surface of the rear region of the protruding piece abuts against the disengagement prevention portion before the groove portion of the rear region of the protruding piece is disengaged from the threaded portion of the optical axis adjusting screw, and disengagement of the threaded engagement can be prevented. In particular, by setting a to a value of 0.2 × B or more, the projection piece can be screwed with the optical axis screw adjuster even in consideration of dimensional errors and assembly position errors of the projection piece and the optical axis screw adjuster. Further, by setting a to a value of 0.6 × B or less, it is possible to maintain the threaded engagement of the groove portion of the projection piece and the threaded portion of the optical axis adjusting screw, even in consideration of dimensional errors and assembly position errors of the projection piece and the optical axis adjusting screw.
Therefore, when the vehicle lamp 1110 is assembled, the individual projecting pieces 1134B may be screwed into the groove portions 1134Ba1 of the individual projecting pieces and the screw portions 1140a of the optical axis adjusting screw 1140, whereby the degree of freedom in assembling the vehicle lamp 1110 can be increased, and thus, the workability in assembling the vehicle lamp 1110 can be improved.
As described above, according to the present embodiment, in the vehicle lamp 1110 configured to control the light distribution of the light from the light source 20 by the optical member 1130, even when the optical member 1130 is configured to be rotatable with respect to the lamp body 1012, the assembling workability can be improved.
Further, as in the present embodiment, the optical member 1130 can be reduced in weight and space by simplifying the protrusion pieces 1134B.
In the present embodiment, a leg portion 1134L extending toward the lamp rear is formed at the left end portion of the optical member 1130, and a fulcrum protrusion 1134La for supporting the optical member 1130 to be rotatable about a rotation axis Ax1 by engagement with the lamp body 1012 is formed at a position on the rotation axis Ax1 on the outer side surface of the leg portion 1134L. Therefore, when the lamp is assembled, the projecting pieces 1134B and the leg portions 1134L are brought into contact with the inner surface of the left side wall 1012B of the lamp body 1012, respectively, and can be elastically deformed independently of each other. This makes it possible to smoothly perform the following operations: the groove portions 1134Ba1 of the projecting pieces 1134B are threadedly engaged with the threaded portions 1140a of the optical axis adjusting screws 1140; the fulcrum protrusion 1134La of the leg 1134L is inserted into and engaged with the through hole 1012b1 of the lamp body 1012. In this case, since the inner surface side of the projection piece is tapered toward the rear end edge, the rear end of the projection piece can be smoothly inserted between the screw portion 1140a and the lamp body 1112. Further, the outer side surface of the projection piece and the separation prevention portion are flat, and the projection piece and the separation prevention portion can be smoothly assembled without interfering with a structural member.
In this case, in the present embodiment, the leg portion 1134L is formed in a tongue shape toward the lamp rear. Further, the projecting piece 1134B is formed to surround the leg portion 1134L at the same position as the leg portion 1134L in the vehicle width direction. Therefore, in addition to minimizing the lateral width required for the vehicle lamp 1110, the projecting pieces 1134B and the leg portions 1134L can be elastically deformed in a stable manner.
Further, in the present embodiment, since the lamp body 1012 is formed with the disengagement permitting portions 1012B3 and 1012B4 which permit the groove portions 1134Ba1 of the projecting pieces 1134B to be disengaged from the state of being screwed with the threaded portion 1140a of the optical axis adjusting screw 1140 when the optical member 1130 is rotated by a predetermined angle or more from the rotation reference position, the following operational effects can be obtained.
That is, if the optical axis adjusting screw 1140 is rotated excessively, the optical member 1130 is rotated by a large angle more than necessary from the rotation reference position. Then, when the optical member 1130 is rotated by a predetermined angle or more from the reference rotation position, the optical axis adjusting screw 1140 can be idly rotated by disengaging the groove portions 1134Ba1 of the protruding pieces 1134B from the state of being screwed into the screw portion 1140a of the optical axis adjusting screw 1140. This can suppress the rotation amount of the optical member 1130 within an appropriate angular range. Further, it is possible to prevent the groove portion 1134Ba1 of the projection piece 1134B or the threaded portion 1140a of the optical axis adjusting screw 1140 from occurring before the threaded engagement portion thereof is accidentally damaged. In addition, the separation allowing part can be formed on the inner surface of the lamp body at low cost without using other parts.
In the above configuration, the rear region 1134Ba may be configured to be elastically deformable by the pressing force from the detachment prevention portion 1012B2 of the lamp body 1012 as the structure of the projection piece 1134B, and thus, even when the detachment prevention portion 1012B2 is formed in a positional relationship of contacting the outer side surface of the rear region 1134Ba of the projection piece 1134B, it is possible to prevent the occurrence of an excessive load before the optical axis adjustment screw 1140 is operated. This ensures operability of the optical axis adjusting screw 1140, and also reliably maintains the state in which the grooves 1134Ba1 of the projecting pieces 1134B are screwed into the optical axis adjusting screw 1140.
In the present embodiment, the three grooves 1134Ba1 are formed in the rear region 1134Ba of the projecting piece 1134B, but two or less or four or more grooves 1134Ba1 may be formed.
In the present embodiment, the configuration in which the lens 32 is supported by the lens holder 1134 has been described as the optical member 1130, but the lens 32 and the lens holder 1134 may be configured as a single member.
In the present embodiment, the structure in which the light source 20 is supported by the rear wall 1012c of the lamp body 1012 via the substrate 22 has been described, but the structure is not limited to this. The light source 20 may be supported by a socket via the base plate 22, and the socket may be detachable from the rear wall 1012c of the lamp body 1012.
In the present embodiment, the case supporting the optical member 1130 is the lamp body 1012, but other lamp structural members (for example, a frame member supported by the lamp body 12) may be employed.
(first modification of second embodiment)
Next, a modified example of the second embodiment will be described.
First, a first modification of the second embodiment will be described.
Fig. 18 is a partially enlarged view of a vehicle lamp 1210 according to this modification, and is similar to fig. 14.
Fig. 19 is a sectional view taken along line b-b of fig. 18.
As shown in fig. 18 to 19, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the extension 1112d of the lamp body 1112 is partially different from that of the extension 1012d of the above embodiment.
That is, the lamp body 1112 of the present modification has the following configuration: the lower wall portion of the protruding portion 1112d is separated into a rear supporting portion 1112d1 and a front supporting portion 1112d2, the rear supporting portion 1112d1 is located on the lamp rear side of the optical axis adjusting screw 1140, and the front supporting portion 1112d2 is located on the front side of the optical axis adjusting screw 1140.
The optical axis adjusting screw 1140 has an upper end of the shaft portion 1140b tapered upward, and a lower end of the screw portion 1140a tapered upward. The uppermost end portion of the shaft portion 1140b located therebetween is configured as a small-diameter neck portion 1140b 1.
The rear support portion 1112d1 has a front surface extending along the outer shape of the shaft portion 1140b of the optical axis adjusting screw 1140 in a side view, and an upper end portion having an arc shape with a radius of curvature larger than that of the neck portion 1140b1 in a top view. The upper end of the rear support 1112d1 engages with the neck portion 1140b1 at the position behind the lamp on the rotation axis Ax1, and the engagement width gradually decreases as the portions move to the left and right sides, so that the portions do not engage with each other at both the left and right ends.
On the other hand, the front support 1112d2 is configured as a protrusion piece extending upward in front of the rotation axis Ax1 with a lateral width smaller than the outer diameter of the screw portion 1140a and a front-rear width smaller than the lateral width. The rear surface of the front support 1112d2 is formed to extend along the outer shape of the shaft portion 1140b of the optical axis adjusting screw 1140 in a side view, and the upper end thereof is engaged with the neck portion 1140b 1.
In the present modification, when the optical axis adjusting screw 1140 is inserted from below into the extension portion 1112d of the lamp body 1112, the front support portion 1112d2 is flexed forward, so that the upper end portion of the rear support portion 1112d1 engages with the neck portion 1140b1 of the optical axis adjusting screw 1140, and then the upper end portion of the front support portion 1112d2 engages with the neck portion 1140b1 of the optical axis adjusting screw 1140.
By adopting the configuration of the present modification, the optical axis adjusting screw 1140 can be easily attached to the extension 1112d of the lamp body 1112, and after the attachment is completed, the lamp body 1112 can be reliably supported by the optical axis adjusting screw 1140.
(second embodiment second modification)
Next, a second modification of the second embodiment will be described.
Fig. 20 is a partially enlarged view of a vehicle lamp 1310 according to the present modification, and is the same view as fig. 14.
As shown in fig. 20, the basic configuration of this modification is the same as that of the above-described embodiment shown in fig. 11 to 17, but the configuration of the optical member 1230 is partially different from that of the optical member 1130 of the above-described embodiment, and accordingly, the configuration of the lamp body 1212 is also partially different from that of the lamp body 1012 of the above-described embodiment.
That is, in the optical member 1230 according to the present modification, the lens 1232, the main body portion 1234A of the lens holder 1234, the leg portion 1234L, and the like have the same configurations as those of the optical member 1130 according to the above-described embodiment, but the configuration of the protrusion piece 1234B is different from that of the protrusion piece 1134B according to the above-described embodiment.
Specifically, the projecting piece 1234B of the present modification is formed to extend rearward of the vehicle lamp 1310 below the leg 1234L.
The projecting piece 1234B is formed to extend in a plate shape on the same vertical plane as the leg portion 1234L, and the rear end edge thereof is located on the rear side of the optical axis adjusting screw 1140 with respect to the vehicle lamp 1310.
The projecting piece 1234B is formed such that, in a side view, a portion from the main body portion 1234A of the lens holder 1234 to a position on the lamp rear side of the pivot axis Ax1 tapers toward the lamp rear, and a rear region 1234Ba located on the lamp rear side is formed with a narrower vertical width and a substantially constant vertical width.
The protruding piece 1234B has a single planar outer surface, and has a plurality of (specifically, three) groove portions 1234Ba1 formed on its inner surface for threaded engagement with the optical axis adjusting screw 1140.
In the present modification, the arrangement of the extension portion 1212d of the lamp body 1212 and the optical axis adjusting screw 1140 is displaced downward as compared with the case of the above-described embodiment shown in fig. 11 to 17, corresponding to the arrangement of the projection pieces 1234B below the leg portions 1234L.
Even in the case of adopting the configuration of the present modification, substantially the same operational effects as in the case of the above-described embodiment shown in fig. 11 to 17 can be obtained.
Further, by adopting the configuration of the present modification, the lens holder 1234 can be easily molded.
(third modification of second embodiment)
Next, a third modification of the second embodiment will be described.
Fig. 21 is a partially enlarged view of the vehicle lamp 1410 according to the present modification, and is similar to fig. 13.
As shown in fig. 21, the basic configuration of this modification is the same as that of the above-described embodiment shown in fig. 11 to 17, but the configuration of the optical member 1330 is partially different from that of the optical member 1130 of the above-described embodiment, and accordingly, the configuration of the lamp body 1312 is also partially different from that of the lamp body 1012 of the above-described embodiment.
That is, in the optical member 1330 of the present modification, the rear region 1334Ba of the projection piece 1334B is formed with a larger lateral width than other general portions (the portion of the projection piece 1134B where the rear region 1334Ba is not formed). The rear region 1334Ba is configured to be elastically deformable by a pressing force from the detachment prevention portion 1312b2 of the lamp body 1312.
Specifically, the projection piece 1334B of the present modification has the following structure: the lamp has a cylindrical structure in which a rear region 1334Ba is long in the front-rear direction of the lamp in a plan view, and a plurality of groove portions 1334Ba1 for screwing with the optical axis adjusting screw 1140 are formed on the inner side surface (i.e., the side surface closer to the axis Ax 2) of the right side wall portion 1334 BaR.
The left side wall section 1334BaL of the rear region 1334Ba is formed with a thickness thinner than the right side wall section 1334BaR, and its rear end portion is formed so as to be bent toward the right side wall section 1334 BaR. The rear region 1334Ba has the outer side surface of the left side wall portion 1334BaL in the same plane as the outer side surface of the general portion other than the rear region 1334Ba (the portion of the protruding piece 1334B other than the rear region 1334 Ba).
The basic configuration of the lamp body 1312 according to this modification is the same as that of the above-described embodiment, but the lateral width of the rear region 1334Ba of the projection piece 1334B is increased, and accordingly, the lateral width of the extension portion 1312d is also larger than that of the above-described embodiment.
In the present modification, the detachment preventing portion 1312B2 of the lamp body 1312 comes into contact with the outer side surface of the left side wall portion 1334BaL of the rear region 1334Ba of the projection piece 1334B in a state where the groove portion 1334Ba1 of the projection piece 1334B is threadedly engaged with the threaded portion 1140a of the optical axis adjusting screw 1140.
In the optical member 1330 according to this modification, when the rear region 1334Ba of the projection piece 1334B receives a pressing force in the rightward direction (i.e., in the direction toward the axis Ax 2) from the detachment prevention portion 1312B2 of the lamp body 1312, the rear end portion of the left side wall portion 1334BaL elastically deforms, and the state of contact with the detachment prevention portion 1312B2 is maintained.
With the configuration of the present modification, even when the detachment prevention portion 1312B2 is formed in a positional relationship in which it contacts the outer side surface of the rear region 1334Ba of the projection piece 1334B, it is possible to prevent an excessive load from occurring before the optical axis adjustment screw 1140 is operated. Thus, in addition to ensuring the operability of the optical axis adjusting screw 1140, the state in which the groove portions 1134Ba1 of the projecting pieces 1134B are threadedly engaged with the threaded portion 1140a of the optical axis adjusting screw 1140 can be reliably maintained.
In the present modification, even when the rear region 1334Ba of the projection piece 1334B interferes with the detachment prevention portion 1312B2 of the lamp body 1312 due to an assembly error or the like between the optical member 1330 and the lamp body 1312, the rear end portion of the left side wall portion 1334BaL is elastically deformed to maintain the state of contact with the detachment prevention portion 1312B 2.
The rear region 1334Ba of the projection piece 1334B may be configured to be elastically deformable by the pressing force from the detachment prevention portion 1312B2 of the case, and the specific shape thereof is not particularly limited.
(fourth modification of second embodiment)
Next, a fourth modification of the second embodiment will be described.
Fig. 22 is a partially enlarged view of a vehicle lamp 1510 according to the present modification, and is similar to fig. 21.
As shown in fig. 22, the basic configuration of this modification is the same as that of the third modification of the second embodiment, but the configuration of the optical member 1430 is partially different from that of the third modification of the second embodiment.
That is, in the optical member 1430 of the present modification example, the rear region 1434Ba of the projection piece 1434B has the following structure: when overlooking and observing, the lamp is provided with a long tubular structure local gap in the front and back direction. The rear region 1434Ba forms the following structure: a plurality of groove portions 1434Ba1 for threadedly engaging with the threaded portion 1140a of the optical axis adjusting screw 1140 are formed on the inner side surface of the right side wall portion 1434 BaR.
The left side wall portion 1434BaL of the rear region 1434Ba is formed with a thinner thickness than the right side wall portion 1434 BaR. The left side wall portion 1434BaL is configured such that its rear end portion is bent toward the right side wall portion 1434BaR, and its front region is notched.
The optical member 1430 of the present modification example also has the following structure: the rear region 1434Ba of the projection piece 1434B can be elastically deformed by the pressing force from the detachment prevention portion 1312B2 of the lamp body 1312.
In the optical member 1430 of the present modification, when the rear region 1434Ba of the projection piece 1434B receives a rightward pressing force from the detachment prevention portion 1312B2 of the lamp body 1312, the rear end portion of the left side wall portion 1434BaL is elastically deformed to maintain a state of contact with the detachment prevention portion 1312B 2.
Therefore, even in the case of adopting the configuration of the present modification, the same operational effects as in the case of the third modification of the second embodiment can be obtained.
(fifth modification of second embodiment)
Next, a fifth modification of the second embodiment will be described.
Fig. 23 shows a main part of a vehicle lamp 1610 according to this modification, and is similar to fig. 21.
As shown in fig. 23, the basic configuration of this modification is the same as that of the third modification of the second embodiment, but the configuration of an optical member 1530 is partially different from that of the third modification of the second embodiment.
That is, in the optical component 1530 according to the present modification example, the rear region 1534Ba of the projection piece 1534B has the following structure: the cylindrical structure is partially notched, which is long in the front-rear direction of the lamp, in a plan view. The rear region 1534Ba forms the following structure: a plurality of groove portions 1534Ba1 for threadedly engaging with the threaded portion 1140a of the optical axis adjusting screw 1140 is formed on the inner side surface of the right side wall portion 1534 BaR.
In the rear region 1534Ba, the left side wall portion 1534BaL is formed to be thinner than the right side wall portion 1534BaR, and is configured to be separated at a rear end portion thereof by a left side wall portion 1534BaL and a right side wall portion 1534 BaR. The rear end of the left side wall portion 1534BaL has a surface shape curved toward the rear of the lamp on its outer side.
In the optical member 1530 of this modification, when the rear region 1534Ba of the projection piece 1534B receives a rightward pressing force from the detachment prevention portion 1312B2 of the lamp body 1312, the rear end portion of the left side wall portion 1534BaL is elastically deformed to maintain a state of contact with the detachment prevention portion 1312B 2.
Therefore, even in the case of adopting the configuration of the present modification, the same operational effects as in the case of the third modification of the second embodiment can be obtained.
(sixth modification of second embodiment)
Next, a sixth modification of the second embodiment will be described.
Fig. 24 is a partially enlarged view of a vehicle lamp 1710 according to this modification, and is substantially the same as fig. 16.
As shown in fig. 24, the basic configuration of this modification is the same as that of the above-described embodiment, but the shape of the detachment prevention portion 1612b2 formed on the inner surface of the left side wall 1612b of the lamp body 1612 is partially different from that of the detachment prevention portion 1012b2 of the above-described embodiment.
That is, the detachment prevention portion 1612b2 of the present modification is also formed in an equiangular shape extending toward the front of the lamp, similarly to the detachment prevention portion 1012b2 of the above embodiment, but is different from the detachment prevention portion 1012b2 of the above embodiment in that its outer peripheral edge portion is not formed in a smooth curved surface shape like the outer peripheral edge portion of the detachment prevention portion 1012b2 of the above embodiment.
Specifically, the outer peripheral surface of the detachment prevention portion 1612b2 is formed by an inclined surface similar to that of the detachment prevention portion 1012b2 of the above-described embodiment, but the ridge portion between the outer peripheral surface and the inner side surface of the detachment prevention portion 1612b2 is formed as a so-called pin corner (ピ ン corner, that is, a chamfered shape) without being chamfered R.
The configuration of the pair of upper and lower disengagement allowing portions 1612b3, 1612b4 formed on the inner surface of the left side wall 1612b of the lamp body 1612 is similar to that of the disengagement allowing portions 1012b3, 1012b4 of the above-described embodiment.
Even in the case of the configuration of the present modification, since the ridge line portion of the projection piece 1134B is chamfered R, the groove portion 1134Ba1 of the projection piece 1134B can be smoothly disengaged from the state of being screwed into the threaded portion 1140a of the optical axis adjusting screw 1140 and can be smoothly returned to the state.
(seventh modification of second embodiment)
Next, a seventh modification of the second embodiment will be described.
Fig. 25 is a partially enlarged view of the vehicle lamp 1810 according to the present modification, and is substantially the same as fig. 16.
As shown in fig. 25, the basic configuration of this modification is the same as that of the above embodiment, but the shape of the separation preventing portion 1712b2 formed on the inner surface of the left side wall 1712b of the lamp body 1712 is partially different from that of the separation preventing portion 1012b2 of the above embodiment.
That is, the detachment prevention portion 1712b2 of the present modification is formed in an equiangular shape extending toward the front of the lamp, similarly to the detachment prevention portion 1012b2 of the above embodiment, but the shape of the outer peripheral edge portion thereof is different from that of the detachment prevention portion 1012b2 of the above embodiment.
Specifically, the outer peripheral surface of the detachment prevention portion 1712b2 is formed by a vertical surface that rises vertically from the inner surface of the left side wall 1712b of the lamp body 1712, and the ridge portion between the outer peripheral surface and the inner surface of the detachment prevention portion 1712b2 is formed by a pin angle.
The configuration of the pair of upper and lower disengagement allowing portions 1712b3, 1712b4 formed on the inner surface of the left side wall 1712b of the lamp body 1712 is the same as that of the disengagement allowing portions 1012b3, 1012b4 of the above-described embodiment.
Even in the case of the configuration of the present modification, since the ridge line portion of the projection piece 1134B is chamfered R, the groove portion 1134Ba1 of the projection piece 1134B can be smoothly disengaged from the state of being screwed into the threaded portion 1140a of the optical axis adjusting screw 1140 and can be smoothly returned to the state.
The numerical values indicated as the specifications in the first embodiment, the second embodiment, and the modifications of the embodiments are merely examples, and it is obvious that the numerical values may be set to appropriately different values.
The present invention is not limited to the configurations described in the above embodiments and modifications thereof, and various modifications other than the above may be added.
The type of the vehicle lamp is not particularly limited, and for example, a fog lamp, a headlamp, or the like can be used.
The type of the light source is not particularly limited, and for example, a light emitting element such as a light emitting diode or a laser diode, a light source bulb, or the like can be used.
The optical member may be a member capable of controlling the distribution of light from the light source, and the specific configuration thereof is not particularly limited, and for example, a lens, a reflector, a globe, or the like may be used. The optical member may be formed such that a main body portion having a light distribution control function is integrally formed with the projection piece, or may be formed separately from the main body portion and the projection piece.
The first direction may be a direction intersecting with the front-rear direction of the lamp, and the specific direction is not particularly limited, and for example, a vehicle width direction, a vertical direction of the vehicle lamp, or the like may be employed.
The second direction may be a direction intersecting the front-back direction of the lamp and the first direction, and the specific direction thereof is not particularly limited.
The projection sheet may be formed to extend from the optical member toward the rear of the lamp, and the specific arrangement and shape thereof are not particularly limited.

Claims (15)

1. A vehicle lamp configured to perform light distribution control of light from a light source by an optical member, comprising:
a housing supporting the optical member to be rotatable about a rotation axis extending in a first direction intersecting with a front-rear direction of the lamp;
an optical axis adjusting screw for rotating the optical component relative to the housing about the rotation axis;
the optical axis adjusting screw is supported by the housing in a state of being arranged to extend in a second direction intersecting with the front-rear direction of the lamp and the first direction on the lamp rear side of the rotation axis,
a protrusion piece extending towards the rear of the lamp is formed on the optical component,
a groove portion that is threadedly engaged with the optical axis adjusting screw is formed in a rear end surface of the projecting piece.
2. The vehicular lamp according to claim 1,
the thread portion of the optical axis adjusting screw, which is threadedly engaged with the groove portion of the protrusion piece, is constituted by a drum worm.
3. The vehicular lamp according to claim 2,
the first direction is set to a horizontal direction and the second direction is set to a vertical direction,
the threaded portion of the optical axis adjusting screw is constituted by a substantially half portion of a drum worm.
4. A lamp for a vehicle as claimed in any one of claims 1 to 3,
the groove portion of the projecting piece is formed to extend along an arc centered on an axis extending in the second direction.
5. A lamp for a vehicle as claimed in any one of claims 1 to 4,
an over-rotation restricting portion that abuts against a rear end portion of the protruding piece to restrict further rotation when the optical member is rotated by a predetermined angle or more from a rotation reference position is formed in the optical axis adjusting screw.
6. A lamp for a vehicle as claimed in any one of claims 1 to 5,
in the housing, a disengagement prevention portion for preventing the groove portion of the protruding piece from being disengaged from a state of being screw-engaged with the optical axis adjusting screw by flexural deformation of the optical axis adjusting screw is formed in a positional relationship close to or in contact with the optical axis adjusting screw.
7. A vehicle lamp configured to perform light distribution control of light from a light source by an optical member, comprising:
a housing supporting the optical member to be rotatable about a rotation axis extending in a first direction intersecting with a front-rear direction of the lamp;
an optical axis adjusting screw for rotating the optical component relative to the housing about the rotation axis;
the optical axis adjusting screw is supported by the housing in a state of being configured to extend in a second direction intersecting with a front-rear direction of the lamp and the first direction,
a projection piece extending toward the rear of the lamp is formed at an end of the optical member in the first direction,
a groove portion which is threadedly engaged with the optical axis adjusting screw is formed on an inner surface of a rear region of the projection piece which is located on the lamp rear side of the rotation axis,
in the housing, a disengagement prevention portion for preventing the groove portion of the projecting piece from being disengaged from a state of being screw-engaged with the optical axis adjusting screw is formed in a positional relationship close to or in contact with an outer side surface of the rear region of the projecting piece.
8. The vehicular lamp according to claim 7,
a leg portion extending rearward of the lamp is formed at an end portion of the optical member in the first direction,
a fulcrum protrusion for supporting the optical component to be rotatable about the rotation axis by engagement with the housing is formed on an outer side surface of the leg portion at a position on the rotation axis.
9. The vehicular lamp according to claim 8,
the foot part is formed into a tongue shape towards the rear of the lamp;
the protruding piece is formed to surround the leg portion at substantially the same position as the leg portion in the first direction.
10. A lamp for a vehicle as claimed in any one of claims 7 to 9,
a disengagement permitting portion that permits the groove portion of the protruding piece to be disengaged from a state of being screw-engaged with the optical axis adjusting screw when the optical member is rotated by a predetermined angle or more from a rotation reference position is formed in the housing.
11. A lamp for a vehicle as claimed in any one of claims 7 to 10,
the rear region of the protruding piece is configured to be elastically deformable by a pressing force from the detachment prevention portion of the housing.
12. The vehicular lamp according to claim 7,
the projecting piece is formed in a tapered shape in a planar view at a portion closer to a rear end edge of an inner side surface of the rear region.
13. The vehicular lamp according to claim 7,
the outer side surface of the projection piece has a single planar shape, and the separation preventing portion has a planar shape formed at a position of the inner wall of the lamp body facing the outer side surface of the projection piece.
14. The vehicular lamp according to claim 7,
when B is a dimension of an effective full tooth height in a state where the groove portion of the rear region of the protruding piece is threadedly engaged with the thread portion of the optical axis adjusting screw, a clearance dimension a when the disengagement preventing portion approaches the outer side surface of the rear region of the protruding piece is as follows: satisfies the condition that A is (0.2-0.6) multiplied by B.
15. The vehicular lamp according to claim 10,
the separation permitting portion is configured by a side surface portion that is displaced toward the outer surface side with respect to the separation preventing portion, and a wall portion that is formed at a position that is displaced from the optical axis by a predetermined distance in the upward or downward direction.
CN201810558238.4A 2018-06-01 2018-06-01 Vehicle lamp Pending CN110630973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810558238.4A CN110630973A (en) 2018-06-01 2018-06-01 Vehicle lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810558238.4A CN110630973A (en) 2018-06-01 2018-06-01 Vehicle lamp

Publications (1)

Publication Number Publication Date
CN110630973A true CN110630973A (en) 2019-12-31

Family

ID=68967502

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810558238.4A Pending CN110630973A (en) 2018-06-01 2018-06-01 Vehicle lamp

Country Status (1)

Country Link
CN (1) CN110630973A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155704A (en) * 2010-02-09 2011-08-17 株式会社小糸制作所 Optical axis adjusting screw
CN105423205A (en) * 2014-09-11 2016-03-23 株式会社本田阿克塞斯 Lighting apparatus
CN105473937A (en) * 2013-08-23 2016-04-06 株式会社小糸制作所 Lamp device for vehicle and lighting device for vehicle
CN105650573A (en) * 2011-09-07 2016-06-08 株式会社小糸制作所 Actuator and vehicle headlamp
CN106080823A (en) * 2016-06-22 2016-11-09 国网山东省电力公司荣成市供电公司 A kind of imitative Gekko Swinhonis Zu Shipa steel tower robot
FR3048655A1 (en) * 2016-03-10 2017-09-15 Valeo Vision Belgique OPTICAL MODULE FOR MOTOR VEHICLE PROJECTOR WITH INCLINATION ADJUSTMENT MECHANISM
JP2017190053A (en) * 2016-04-13 2017-10-19 株式会社小糸製作所 Luminaire
CN208487573U (en) * 2018-06-01 2019-02-12 株式会社小糸制作所 Lamps apparatus for vehicle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155704A (en) * 2010-02-09 2011-08-17 株式会社小糸制作所 Optical axis adjusting screw
CN105650573A (en) * 2011-09-07 2016-06-08 株式会社小糸制作所 Actuator and vehicle headlamp
CN105473937A (en) * 2013-08-23 2016-04-06 株式会社小糸制作所 Lamp device for vehicle and lighting device for vehicle
CN105423205A (en) * 2014-09-11 2016-03-23 株式会社本田阿克塞斯 Lighting apparatus
FR3048655A1 (en) * 2016-03-10 2017-09-15 Valeo Vision Belgique OPTICAL MODULE FOR MOTOR VEHICLE PROJECTOR WITH INCLINATION ADJUSTMENT MECHANISM
JP2017190053A (en) * 2016-04-13 2017-10-19 株式会社小糸製作所 Luminaire
CN106080823A (en) * 2016-06-22 2016-11-09 国网山东省电力公司荣成市供电公司 A kind of imitative Gekko Swinhonis Zu Shipa steel tower robot
CN208487573U (en) * 2018-06-01 2019-02-12 株式会社小糸制作所 Lamps apparatus for vehicle

Similar Documents

Publication Publication Date Title
US10434928B2 (en) Lamp device for vehicle and lighting device for vehicle
CN110296373B (en) Lighting device for vehicle
CN109556078B (en) Vehicle lamp
US9551478B2 (en) Lighting device
CN109556077B (en) Vehicle lamp
JP6584712B1 (en) Vehicle lighting
US8235565B2 (en) Vehicular lamp
CN114383106A (en) Lamp unit
EP3594561B1 (en) Lamp for vehicle
CN110630973A (en) Vehicle lamp
JP2020009715A (en) Vehicular light
CN110388615B (en) Vehicle lamp
CN110274210B (en) Vehicle headlamp
US10883690B2 (en) Vehicle lamp
CN212719547U (en) Power supply accessory and lamp unit
JP2019212406A (en) Vehicle lamp
CN212657654U (en) Attitude adjusting device for module component
CN208487573U (en) Lamps apparatus for vehicle
JP6584445B2 (en) Vehicle lighting
CN111911883B (en) Power supply accessory and lamp unit
CN208365419U (en) Lamps apparatus for vehicle
WO2022131155A1 (en) Vehicle-mounted light source unit
JP6687385B2 (en) Vehicle lighting
JP2019212633A (en) Vehicle lamp
JP2019040883A (en) Vehicle lighting device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination