JP2019212407A - Vehicle light - Google Patents

Abstract

To provide a movable lens type vehicle light configured to control light distribution from light source by projection lens, in which the form of light distribution pattern may be maintained in an initial form even in a case where a rotational mounting type light source unit is applied.SOLUTION: A light source unit 20 having a light emitting element 22 as a light source is mounted on a rear wall 112c of a housing 112. At this time, a socket 26 of the light source unit 20 is configured to be mounted on the housing 112 by insertion and rotation thereof relatively to an opening formed on the rear wall 112c. In addition, the housing 112 is provided with a reverse rotation preventing structure 160 for preventing rotation of the light source unit 20 from a predetermined mounting position toward loosening direction by contact with the socket 26. Thereby, it is previously prevented that the form of the light distribution pattern generated by the light from the light emitting element 22 emitted from the projection lens 32 is modified to a shape different from the initial form.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a vehicular lamp configured to control light distribution from a light source by a projection lens.

  Conventionally, as a configuration of a vehicular lamp, a configuration in which light from a light source is controlled to be distributed by a projection lens is known.

  In “Patent Document 1”, as a configuration of such a vehicle lamp, a lens in which an optical part and a turning part are integrally formed is provided, and the turning part can turn up and down with respect to the housing. A supported lens movable type is described.

  In the vehicular lamp described in “Patent Document 1”, the light source is configured by a light emitting element, and the light emitting element is supported on the rear wall portion of the housing via a substrate and a heat sink. Yes.

Special table 2015-522929

  In such a vehicular lamp, a light source unit including a light emitting element, a substrate on which the light emitting element is mounted, and a socket that supports the substrate is employed, and the socket of the light source unit is attached to the rear wall portion of the housing. It is also possible to adopt a configuration in which the housing is mounted by being inserted into the formed opening and rotated.

  Although it is possible to position the light source with high precision in the front-rear direction of the lamp by simplifying the lamp structure by using the configuration including such a rotation mounting type light source unit, there are the following problems. .

  In other words, if the light source unit is rotated in a loosening direction from a predetermined mounting position due to vehicle vibration or the like, the shape of the light distribution pattern formed by the light from the light source emitted from the projection lens is different from the intended shape. It becomes a thing.

  The present invention has been made in view of such circumstances, and is a rotationally mounted light source unit in a lens movable vehicle lamp configured to control light distribution from a light source by a projection lens. Even if it employ | adopts, it aims at providing the vehicle lamp which can maintain the shape of a light distribution pattern in the expected shape.

  The present invention is configured to have a predetermined reverse rotation prevention structure so as to achieve the above object.

That is, the vehicular lamp according to the present invention is
In a vehicular lamp configured to control light distribution from a light source by a projection lens,
A lens holder that supports the projection lens, and a housing that rotatably supports the lens holder about a rotation axis extending in the vehicle width direction,
The light source is configured as the light emitting element in a light source unit including a light emitting element, a substrate on which the light emitting element is mounted, and a socket that supports the substrate.
The light source unit is attached to the housing by inserting and rotating the socket into an opening formed in a rear wall portion of the housing,
The housing is provided with a reverse rotation prevention structure that prevents the light source unit from rotating in a direction loosening from a predetermined mounting position by contact with the socket.

  The type of the vehicular lamp according to the present invention is not particularly limited, and, for example, a fog lamp, a head lamp, or the like can be employed.

  The specific configuration of the “lens holder” is not particularly limited as long as the “lens holder” is supported so as to be rotatable about a rotation axis extending in the vehicle width direction with respect to the housing.

  The “reverse rotation prevention structure” is not particularly limited as long as the light source unit can be prevented from rotating in a loosening direction from a predetermined mounting position by contact with the socket. Is not to be done.

  In the vehicular lamp according to the present invention, since the lens holder that supports the projection lens is supported so as to be rotatable in the vertical direction with respect to the housing, the optical axis in the vertical direction with the light source fixed to the housing. Adjustments can be made. Therefore, the vehicular lamp can have a compact configuration, which can be particularly suitable for a fog lamp or the like.

  The light source of the vehicular lamp according to the present invention is configured as a light emitting element in a light source unit that includes a light emitting element, a substrate on which the light emitting element is mounted, and a socket that supports the substrate. Simplification can be achieved.

  At that time, the light source unit is configured to be mounted on the housing by inserting and rotating the socket of the light source unit into the opening formed in the rear wall portion of the housing, so that the light source can be accurately adjusted in the longitudinal direction of the lamp. It can be positioned well.

  In addition, the housing is provided with a reverse rotation prevention structure that prevents the light source unit from rotating in a loosening direction from a predetermined mounting position by contact with the socket. It is possible to prevent the shape of the light distribution pattern formed by the light from becoming different from the intended shape.

  Thus, according to the present invention, in the lens movable vehicle lamp configured to control the light distribution from the light source by the projection lens, even when a rotationally mounted light source unit is employed, The shape of the light distribution pattern can be maintained at the desired shape.

  In the above configuration, a plurality of white light emitting diodes are arranged adjacent to each other as the light emitting device, and the configuration of this light emitting device is that when the light source unit is rotated to a predetermined mounting position, If the light emitting surface is configured to extend horizontally, a horizontally long light distribution pattern can be formed, which makes the vehicle lamp particularly suitable for a fog lamp or the like.

  In the above configuration, the reverse rotation preventing structure further includes a contact member for contacting the socket of the light source unit and a fastening member for fastening the contact member to the rear wall portion of the housing. In this case, it is possible to prevent the light source unit from rotating in a loosening direction from the predetermined mounting position with a simple configuration.

  In the above configuration, the socket further includes a socket body and a heat sink fixed to the socket body as the socket of the light source unit, and the contact of the contact member with the light source unit is performed on the heat sink. With the configuration, the following operational effects can be obtained.

  That is, the heat sink is made of a hard metal member and hardly deforms even when the contact member comes into contact with the heat sink, so that it is possible to reliably prevent the light source unit from rotating in the direction of loosening from the mounting position. .

  The type of the “fastening member” is not particularly limited, but if it is configured with a screw, the contact member can be fastened with a simple configuration.

  At this time, if the screw has a screw hole shape that can transmit only the rotational force in the tightening direction of the screw, the screw can be removed by inadvertent driver operation after the vehicle lamp is assembled. Thus, it is possible to prevent the light source unit from being in a state where it can rotate in the direction of loosening from the mounting position.

  In the above configuration, the contact member may further include a fastening portion fixed to the rear wall portion of the housing and a pair of arm portions extending from the fastening portion. If the tip surfaces of the pair of arm portions are configured to come into contact with or close to the heat sink in the state of being fastened to the rear wall portion, the contact member can be easily positioned.

  At that time, as the heat sink, a front end portion formed in a disk shape and a plurality of heat radiation fins extending in a strip shape toward the rear side of the lamp on the outer peripheral surface thereof, and the front end portion is fixed to the socket body. If it is set as the structure where contact | abutting or proximity | contact with the heat sink of the front end surface of a pair of arm part is performed with respect to a pair of radiation fin located in the edge part of the circumferential direction among several radiation fins, contact | abutting The member can be positioned more easily.

  At that time, the contact member is further configured such that the pair of arm portions extend along the outer peripheral surface of the front end portion of the heat sink when the fastening portion is fastened to the rear wall portion of the housing. As a result, the pair of arm portions can be used as a guide for fixing the contact member to the rear wall portion of the housing.

  In the above configuration, if the contact member is made of a resin plate-like member, the reverse rotation prevention structure can be made simple and lightweight.

Plan sectional drawing which shows the vehicle lamp which concerns on 1st Embodiment of this invention. II-II sectional view of FIG. Front view showing the vehicle lamp Detailed view of the main part of FIG. (A) is a detailed view of the Va part in FIG. 3, (b) is a detailed view of the Vb part in FIG. FIG. 5B is a view taken in the direction of the arrow VI in FIG. Plan sectional view showing a state of assembly of the lens holder to the housing in the vehicle lamp The front view which shows the mode of the assembly | attachment of the light source unit to a housing in the said vehicle lamp (A) is a rear view partially showing the vehicle lamp, (b) is a diagram similar to (a) showing a first modification of the first embodiment. The same figure as FIG. 1 which shows the 2nd modification of the said embodiment. Plan sectional drawing which shows the vehicle lamp which concerns on 2nd Embodiment of this invention. XII-XII sectional detail view of FIG. The front view which shows the housing with which the light source unit was mounted | worn in the said 2nd Embodiment. The rear view which shows the mode of the assembly | attachment of the projection lens to a lens holder in the said 2nd Embodiment. The perspective view which shows the state of the said assembly seeing from diagonally lower back

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, a first embodiment of the present invention will be described.

  FIG. 1 is a plan sectional view showing a vehicular lamp 10 according to the present embodiment, and FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3 is a front view showing the vehicular lamp 10. In FIG. 3, a part of the constituent elements are shown in a broken state.

  In these drawings, the direction indicated by X is “front” as a lamp (“front” as a vehicle), and the direction indicated by Y is “left” (“left direction” as a vehicle) orthogonal to “front”. However, it is “right direction” in the front view of the lamp, and the direction indicated by Z is “upward direction”. The same applies to other figures.

  As shown in these drawings, a vehicular lamp 10 according to the present embodiment is a fog lamp provided at the right front end portion of a vehicle, and is attached to a housing 12 having a function as a lamp body and a front end opening portion thereof. In the lamp chamber formed by the transparent light-transmitting cover 14, a light emitting element 22 as a light source and a light distribution control unit 30 for controlling light distribution from the light emitting element 22 are accommodated. ing.

  The light distribution control unit 30 is supported so as to be rotatable in the vertical direction with respect to the housing 12. The light emitting element 22 is configured as a part of the light source unit 20 attached to the rear wall portion 12c of the housing 12.

  The translucent cover 14 includes a cover main body portion 14A having a laterally oblong outer shape when viewed from the front of the lamp, and an outer peripheral flange portion 14B positioned on the outer peripheral side thereof. The cover main body 14A is formed so as to extend along a convex curved surface close to a spherical surface, and is disposed in a state inclined from the left end portion (right end portion in the front view of the lamp) toward the right end portion toward the rear side of the lamp. Yes.

  The outer peripheral flange portion 14B has a laterally oblong outer shape that is slightly larger than the cover main body portion 14A, and an overhanging flange portion 14Ba is formed at a lower left portion thereof. The overhanging flange portion 14Ba is formed in a right triangle shape having two sides extending in the horizontal direction and the vertical direction so as to protrude from the general portion of the outer peripheral flange portion 14B to the outer peripheral side.

  As described above, the translucent cover 14 is configured such that the overhanging flange portion 14Ba is formed on the outer peripheral flange portion 14B. In addition to preventing the light transmission cover 14 from being erroneously assembled with a fog lamp (that is, a lamp to be paired with the vehicle lamp 10) provided at the left front end of the vehicle. It is supposed to be.

  The housing 12 has the same outer shape as the outer shape of the translucent cover 14 in front view of the lamp. The translucent cover 14 is fixed to the housing 12 in a state where the annular protrusion 14Bb formed on the rear surface of the outer peripheral flange portion 14B is inserted into the annular groove 12e formed in the front end opening of the housing 12. . This fixing is performed by ultrasonic welding in a state where the tip of the annular protrusion 14Bb of the translucent cover 14 is in contact with the bottom surface of the annular groove 12e of the housing 12.

  The vehicular lamp 10 is attached to a vehicle body side member (not shown) in a state of being embedded in a vehicle bumper 100 (a member indicated by a two-dot chain line in FIG. 1).

  Specifically, the vehicular lamp 10 includes two pairs of left and right brackets 12f formed on the housing 12 in a state where the cover main body portion 14A of the translucent cover 14 is exposed to the opening 100a formed on the bumper 100. It is attached to the vehicle body side member. At this time, the opening 100a of the bumper 100 is formed in a laterally oblong inner peripheral edge shape slightly larger than the outer peripheral edge shape of the cover main body part 14A of the translucent cover 14, thereby extending the outer peripheral flange part 14B. It is possible to cover most of the flange portion 14Ba with the bumper 100.

  Next, a specific configuration of the light distribution control unit 30 and a support structure for the housing 12 will be described.

  The light distribution control unit 30 includes a projection lens 32 that controls deflection of the direct light from the light emitting element 22 and a lens holder 34 that supports the projection lens 32.

  The projection lens 32 is made of a colorless and transparent acrylic resin or the like, and its optical axis Ax extends in the front-rear direction of the lamp near the lower portion of the light emitting element 22.

  The projection lens 32 has a lens body portion 32A having a convex front surface and a flat rear surface, and an annular surface flush with the rear surface of the lens body portion 32A on the outer peripheral side of the lens body portion 32A. And an outer peripheral flange portion 32B. The projection lens 32 has a laterally long oval outer shape when viewed from the front of the lamp, and is disposed in an inclined state toward the rear side of the lamp from the left end to the right end. The projection lens 32 emits the direct light from the light emitting element 22 in the lens main body portion 32A to the front of the lamp as light that spreads slightly downward in the vehicle width direction, thereby forming a fog lamp light distribution pattern. It is supposed to be. At this time, the projection lens 32 has a lens body portion 32A of the lens body 32A so that the maximum diffusion angle of the light emitted from the projection lens 32 to the outside in the vehicle width direction is larger than the maximum diffusion angle to the inside in the vehicle width direction. The surface shape is set.

  The lens holder 34 is made of a transparent member such as a colorless and transparent polycarbonate resin. The lens holder 34 is formed such that an annular main body portion 34A that supports the projection lens 32 at the outer peripheral edge thereof extends inclining toward the rear side of the lamp from the left end portion toward the right end portion along the rear surface of the projection lens 32. A pair of leg portions 34L and 34R extending toward the rear of the lamp are formed on the left and right sides thereof.

  The projection lens 32 is supported by the lens holder 34 by fixing the projection lens 32 to the lens holder 34 at four locations by heat caulking. In order to realize this, four protrusions 32a for caulking are formed on the rear surface of the outer peripheral edge of the projection lens 32, and the caulking protrusion 32a is inserted into the main body portion 34A of the lens holder 34. Insertion hole 34Aa is formed. In addition, in FIGS. 1-3, each protrusion part 32a for crimping is shown in the state after heat crimping was performed.

  In the vehicular lamp 10, external light passes through the translucent cover 14 and the projection lens 32 from the front side of the lamp, and enters the internal space of the housing 12 (that is, the space located behind the projection lens 32 in the lamp chamber). However, a reflecting member 36 for reflecting the external light is disposed on the rear side of the lamp with respect to the projection lens 32.

  The reflecting member 36 is supported by the lens holder 34. Specifically, the reflecting member 36 is integrally formed with the lens holder 34, thereby being supported by the lens holder 34. Therefore, the reflecting member 36 is also composed of a transparent member such as a colorless and transparent polycarbonate resin.

  The reflection member 36 is configured as an annular member that extends from the outer peripheral edge of the main body portion 34A of the lens holder 34 toward the rear of the lamp toward the optical axis Ax. Specifically, the reflecting member 36 is formed so that the front surface thereof extends along a curved surface having an intermediate shape between a conical surface and an elliptical conical surface, and the rear end portion is centered on the optical axis Ax. An opening 36a having an inner peripheral shape close to a circle is formed. At this time, the reflecting member 36 is arranged in a positional relationship such that light for controlling light distribution from the light emitting element 22 toward the projection lens 32 is not blocked.

  External light incident on the internal space of the housing 12 through the projection lens 32 is projected onto the rear surface of the reflecting member 36 (that is, a portion overlapping the peripheral edge of the lens main body portion 32A of the projection lens 32 in the front view of the lamp). A plurality of reflective elements 36 s that reflect toward the lens 32 are formed. Each reflecting element 36s has a surface shape such as a triangular pyramid surface or a triangular prism surface, and is configured so that external light reaching the reflecting element 36s can be totally reflected. In other words, the reflecting member 36 is configured such that when the vehicular lamp 10 is observed from the front side of the lamp, several reflecting elements 36 s arranged at an angle that totally reflects external light toward the observation direction appear to shine. ing.

  The light distribution control unit 30 has a pair of left and right legs 34L and 34R of the lens holder 34 around a rotation axis Ax1 extending in the vehicle width direction (that is, a horizontal direction orthogonal to the optical axis Ax) with respect to the housing 12. It is rotatably supported.

  A specific configuration for realizing this is as follows.

  That is, the pair of left and right leg portions 34L and 34R are formed to extend in a plate shape from the left and right side portions of the main body portion 34A of the lens holder 34 toward the rear of the lamp in plan view.

  Each of the pair of left and right leg portions 34L and 34R is formed to extend in a tongue shape from the main body portion 34A of the lens holder 34 toward the rear of the lamp in a side view. Further, as shown in FIG. 1, the pair of left and right leg portions 34L and 34R are formed to extend in a direction that slightly expands toward the rear of the lamp with respect to a vertical plane extending in the lamp front-rear direction in plan view. Yes. At this time, as the main body portion 34A of the lens holder 34 is inclined from the left end portion toward the right end portion toward the rear side of the lamp, the left leg portion 34L is longer than the right leg portion 34R ( More specifically, the length is twice or more. A reinforcing rib 34Lb for increasing the bending rigidity of the leg portion 34L is formed on the inner side surface of the left leg portion 34L (that is, the side surface located on the optical axis Ax side).

  On the outer surface of the rear end portion of each leg portion 34L, 34R, fulcrum protrusion portions 34La, 34Ra projecting outward on the rotation axis Ax1 are formed. Each of the fulcrum protrusions 34La and 34Ra is formed in a truncated cone shape and its base end is formed in a columnar shape, but its base end is a fulcrum protrusion on the left side of the right fulcrum protrusion 34Ra. The part 34La is longer.

  In the light distribution control unit 30, the fulcrum protrusion 34Ra of the right leg 34R of the lens holder 34 is inserted into the fulcrum engaging recess 12a1 formed in the right wall 12a of the housing 12, and the left The fulcrum protrusion 34La of the leg 34L is inserted into a fulcrum engagement hole 12b1 formed in the left side wall 12b of the housing 12, whereby the fulcrum protrusion 34La is supported so as to be rotatable about the rotation axis Ax1 with respect to the housing 12. It is like that.

  That is, the fulcrum engaging recess 12a1 constituting the right fulcrum engaging portion is formed as a truncated conical recess on the inner surface of the right wall 12a of the housing 12, and constitutes the left fulcrum engaging portion. The fulcrum engagement hole 12b1 is configured as a cylindrical through hole that penetrates the left side wall portion 12b of the housing 12 in the vehicle width direction.

  A filter 50 for closing the fulcrum engagement hole 12b1 is mounted on the left side wall portion 12b of the housing 12 from the outer surface side (this will be described later).

  FIG. 4 is a detailed view of a main part of FIG.

  As also shown in the figure, the housing 12 is configured as an overhanging portion 12d whose left rear end projects from the rear wall 12c to the lamp rear side. An optical axis adjustment screw 40 for rotating the light distribution control unit 30 about the rotation axis Ax1 is supported on the lower wall portion of the projecting portion 12d so as to be rotatable about the axis Ax2 extending in the vertical direction. .

  The optical axis adjusting screw 40 is a resin-made member (for example, made of polyamide resin) and is formed such that its diameter gradually decreases from the lower end portion toward the upper end portion. A portion 40a is formed. The screw portion 40a is a metric screw. The optical axis adjusting screw 40 is supported by the housing 12 at a shaft portion 40b located in the middle with the screw portion 40a exposed in the lamp chamber and the lower end portion exposed to the external space. Yes.

  A driver insertion hole 40c is formed at the lower end of the optical axis adjustment screw 40, and the optical axis adjustment screw 40 is moved around the axis Ax2 by operating by inserting a driver (not shown) into the driver insertion hole 40c. It can be rotated. An O-ring 42 is attached to the shaft portion 40b of the optical axis adjusting screw 40 to ensure airtightness in the lamp chamber.

  On the left side of the lens holder 34, a protrusion piece 34B extending toward the rear of the lamp is formed. The protruding piece 34B is formed so as to extend in a plate shape on the same vertical plane as the left leg 34L, and its rear end edge is behind the rotating axis Ax1 (further than the optical axis adjusting screw 40). It is located on the rear side of the lamp.

  The protrusion piece 34B has a portion from the main body portion 34A of the lens holder 34 to a position on the rear side of the lamp with respect to the rotation axis Ax1 as viewed from the side, and the left leg portion 34L via the substantially U-shaped slit 34a. The rear region 34Ba is formed so as to surround the lamp, and is formed so as to extend with a substantially constant vertical width toward the rear of the lamp at the same height position as the optical axis Ax.

  The projecting piece 34B has a single flat surface on the outer surface (side surface opposite to the optical axis Ax), but a step is formed in the middle of the rear region 34Ba on the inner surface. The portion located behind the lamp is thinner than the other general portions (see FIG. 1). A plurality (specifically, three) groove portions 34Ba1 for screwing with the optical axis adjusting screw 40 are formed on the inner surface of the thinned portion.

  When the light distribution control unit 30 is at the rotation reference position that is the reference position for the optical axis adjustment, the plurality of groove portions 34Ba1 are centered on the same height position as the optical axis Ax, and the screw portion of the optical axis adjustment screw 40 40a is screwed.

  Each groove 34Ba1 has a substantially wedge-shaped vertical cross-sectional shape and is formed so as to extend in the front-rear direction of the lamp, and the vertical width thereof is set to the same value as the pitch of the screw portion 40a of the optical axis adjusting screw 40.

  The rear region 34Ba of the projecting piece 34B has a taper portion in the plan view in the vicinity of the rear end edge of the inner surface, and accordingly, the plurality of groove portions 34Ba1 are formed in the zigzag shape in the rear end surface in the side view. Has been.

  The inner side surface of the left side wall portion 12b of the housing 12 is formed so as to extend to the overhanging portion 12d while maintaining a smooth planar shape, and the groove portion 34Ba1 of the protruding piece 34B is formed at the rear end portion of the optical axis adjusting screw 40. A disengagement prevention portion 12d1 is formed for preventing disengagement from the screwed state. The detachment preventing portion 12d1 is configured such that a partial region of the rear end portion on the inner side surface of the left side wall portion 12b is displaced toward the inner side surface with respect to the other general portions to increase the thickness, thereby causing the rear region 34Ba of the protruding piece 34B. It is formed in a positional relationship close to the outer surface of the.

  A pair of upper and lower detachment preventing protrusions 34Bb are formed on the outer surface of a front region of the protrusion 34B located on the front side of the lamp relative to the rotation axis Ax1. Specifically, the pair of upper and lower separation preventing projections 34Bb are formed at positions adjacent to the upper and lower sides of the substantially U-shaped slit 34a at the front end portion of the projection piece 34B.

  Each separation preventing projection 34Bb has a trapezoidal outer shape that is long in the front-rear direction of the lamp in plan view, and is formed so that its front end surface is close to the inner surface of the left side wall portion 12b of the housing 12. Yes. At that time, the clearance between the front end surface of each separation preventing projection 34Bb and the inner surface of the left side wall 12b of the housing 12 is such that the fulcrum projection 34Ra of the right leg 34R of the lens holder 34 is a fulcrum of the housing 12. It is set to a value smaller than the insertion depth into the fulcrum engaging recess 12a1 in a state where it is engaged with the engaging recess 12a1.

  FIG. 5A is a detailed view of the Va portion in FIG. 3, and FIG. 5B is a detailed view of the Vb portion in FIG.

  As shown in FIG. 5A, a groove 12a2 extending from the fulcrum engaging recess 12a1 toward the front of the lamp is formed on the inner surface of the right side wall 12a of the housing 12.

  The groove 12a2 is set such that the vertical width of the front region is larger than the vertical width of the rear region. Specifically, the groove 12a2 is formed such that its vertical width gradually increases toward the front of the lamp. At this time, the vertical width of the groove 12b2 is set to a value similar to the outer diameter of the base end of the fulcrum protrusion 34Ra of the lens holder 34 at the rear end position, and the rear end position at the front end position. Is set to a value of about 2 to 4 times the vertical width.

  In addition, the depth of the front region of the groove 12a2 is set to a value larger than the depth of the rear region. Specifically, the groove 12a2 is formed so that its depth gradually increases toward the front of the lamp. At this time, the depth of the groove 12a2 is set to a value of about 0.2 to 0.6 times the insertion depth of the fulcrum protrusion 34Ra into the fulcrum engaging recess 12a1 at the rear end position. The front end position is set to a value of about 0.6 to 1.2 times the insertion depth.

  On the other hand, as shown in FIG. 5B, a groove 12b2 extending from the fulcrum engagement hole 12b1 toward the front of the lamp is formed on the inner side surface of the left side wall 12b of the housing 12.

  The groove 12b2 is set such that the vertical width of the front region is larger than the vertical width of the rear region. Specifically, the groove 12b2 is formed such that its vertical width gradually increases toward the front of the lamp. At this time, the vertical width of the groove 12a2 is set to a value similar to the outer diameter of the base end of the fulcrum protrusion 34La of the lens holder 34 at the rear end position, and the rear end position at the front end position. Is set to a value of about 2 to 6 times the vertical width.

  Further, the depth of the front region of the groove 12b2 is set to a value larger than the depth of the rear region. Specifically, the groove 12b2 is formed so that its depth gradually increases toward the front of the lamp. At this time, the depth of the groove 12b2 is set to a value of about 0.2 to 0.6 times the insertion depth of the fulcrum protrusion 34La into the fulcrum engagement hole 12b1 at the rear end position. The position is set to a value of about 0.6 to 1.2 times the insertion depth.

  FIG. 6 is a view in the direction of the arrow VI in FIG. 5B, and shows how the filter 50 is attached to the housing 12.

  As shown in the figure, the left wall 12b of the housing 12 is formed with a vent hole 12b3 penetrating the left wall 12b in the vehicle width direction above the fulcrum engaging hole 34La. The vent hole 12b3 is for absorbing pressure fluctuations accompanying the temperature change of the gas in the lamp chamber, and is formed so as to surround the fulcrum protrusion 34La in an arc shape, and is more than the fulcrum engagement hole 34La. It has a large opening shape.

  A filter 50 for closing the fulcrum engaging hole 12b1 and the vent hole 12b3 is attached to the left side wall portion 12b of the housing 12 from the outer surface side.

  The filter 50 is configured as a sheet-like filter having waterproofness and moisture diffusibility, and has a circular outer shape. The filter 50 is made of a sheet-like material having a thickness of several tens of μm, such as expanded polytetrafluoroethylene (ePTFE), and a plurality of fine holes (for example, holes having a diameter of 10 μm or less) are formed in a mesh shape. It has a formed configuration.

  An annular bead portion 12b4 that surrounds the fulcrum engagement hole 12b1 and the vent hole 12b3 in an annular shape is formed on the outer surface of the left side wall portion 12b. The height of the annular bead 12b4 is set to a value larger than the thickness of the filter 50 (for example, a value of about 0.5 to 1 mm). Moreover, the area | region located in the outer peripheral surface of the left side wall part 12b at the inner peripheral side of the cyclic bead part 12b4 is formed as the plane part 12b5.

  The filter 50 is attached by attaching the filter 50 to the outer side surface of the left side wall portion 12b of the housing 12 in the plane portion 12b5 on the inner peripheral side of the annular bead 12b4. At that time, the annular bead portion 12b4 functions as a positioning guide when the filter 50 is attached to the left side wall portion 12b of the housing 12, and has a function of making it difficult to peel off the filter 50 attached to the left side wall portion 12b. It has come to fulfill.

  FIG. 7 is a cross-sectional plan view showing a state when the lens holder 34 of the light distribution control unit 30 is assembled to the housing 12 in the present embodiment.

  As shown in the figure, with the light distribution control unit 30 inclined in a horizontal plane, the rear end of the projection piece 34B of the lens holder 34 and the fulcrum projection 34La of the left leg 34L are connected to the left side of the housing 12. These are brought into contact with the inner surface of the wall portion 12b and are elastically deformed respectively. In this state, the right leg 34R is inserted into the housing 12, and the fulcrum protrusion 34Ra of the leg 34R is inserted into the fulcrum engaging recess 12a1 of the right wall 12a of the housing 12. Thereafter, the light distribution control unit 30 is pushed in such a manner that the light distribution control unit 30 is rotated in the direction of the arrow in the figure around the fulcrum projection 34Ra, thereby causing the rear end of the projection piece 34B and the fulcrum projection 34La of the leg 34L to move. It moves to the lamp rear side along the inner surface of the left side wall part 12b of the housing 12. And after making the rear end part of the protrusion piece 34B ride on the separation preventing part 12d1 formed on the rear end part of the inner side surface of the left side wall part 12b, the fulcrum protrusion part 34La of the leg part 34L is supported by the left side wall part 12b. Insert into the engagement hole 12b1.

  As a result, the light distribution control unit 30 is supported by the housing 12 so as to be rotatable about the rotation axis Ax1. At this time, the protruding piece 34B is screwed with the screw portion 40a of the optical axis adjusting screw 40 in the plurality of groove portions 34Ba1 formed on the inner side surface thereof, and the outer side surface thereof is close to the separation preventing portion 12d1 of the housing 12 It becomes.

  A groove 12a2 extending from the fulcrum engaging recess 12a1 toward the front of the lamp is formed on the inner side surface of the right side wall 12a of the housing 12. Therefore, when the right leg 34R is inserted into the housing 12, By engaging the fulcrum protrusion 34Ra with the groove 12a2, it is possible to move the fulcrum protrusion 34Ra to the rear side of the lamp in a state of being guided in the up-and-down direction. It becomes.

  Further, since a groove 12b2 extending from the fulcrum engagement hole 12b1 toward the front of the lamp is formed on the inner side surface of the left wall 12b of the housing 12, the left leg 34L is inserted into the housing 12. By engaging the fulcrum projection 34La with the groove 12b2, it is possible to move the fulcrum protruding portion 34La to the rear side of the lamp while being guided in the vertical direction, thereby facilitating insertion into the fulcrum engaging recess 12b1. Is possible.

  As shown by a two-dot chain line in FIG. 7, assuming that the projection piece 34B and the left leg 34L are integrally formed as a configuration of the lens holder 34, the fulcrum projection 34La of the leg 34L is formed in the housing 12. When contacting the inner side surface of the left side wall portion 12b, the projecting piece 34B moves away from the inner side surface of the left side wall portion 12b, and the rear end portion interferes with the optical axis adjusting screw 40. However, in the lens holder 34 of the present embodiment, the projection piece 34B and the left leg 34L are elastically deformed independently of each other, so that the light distribution control unit does not cause such a problem. The assembly of 30 will be performed smoothly.

  Next, a specific configuration of the light source unit 20 and its mounting structure on the housing 12 will be described.

  FIG. 8 is a front view showing how the light source unit 20 is assembled to the housing 12 in the vehicular lamp 10. FIG. 9A is a rear view partially showing the vehicular lamp 10.

  As shown in FIG. 8, an opening 12 c 1 for mounting the light source unit 20 is formed in the rear wall portion 12 c of the housing 12.

  The light source unit 20 includes a substrate 24 on which the light emitting element 22 is mounted and a socket 26 that supports the substrate 24.

  The light-emitting element 22 has a configuration in which three white light-emitting diodes are arranged adjacent to each other in the vehicle width direction (that is, the left-right direction), thereby having a horizontally-long rectangular light-emitting surface. And this light emitting element 22 is arrange | positioned in the state which orient | assigned the light emission surface to the lamp front direction (namely, vehicle front).

  The light source unit 20 is a rotationally mounted light source unit, and the socket 26 is inserted into the opening 12c1 of the housing 12 from the rear side of the lamp and rotated clockwise by a predetermined angle (specifically, 45 °). As a result, the housing 12 is mounted.

  The socket 26 of the light source unit 20 includes a resin socket body 26A and a metal (for example, aluminum die cast) heat sink 26B fixed to the socket body 26A.

  The socket body 26A is formed in a cylindrical shape with an outer diameter slightly smaller than the inner diameter of the opening 12c1 of the housing 12, and the rear wall portion of the housing 12 around the opening 12c1 is formed on the outer peripheral surface of the front end portion thereof. A plurality of engaging projections 26Aa for engaging with 12c are formed. Further, as shown in FIG. 9A, a connector portion 26Ab for supplying power to the light source unit 20 is formed at the rear end portion of the socket body 26A.

  The heat sink 26B has a front end portion 26B1 formed in a disk shape, and is fixed to the socket body 26A at the front end portion 26B1. The heat sink 26B is configured to include five radiating fins 26B2 extending in a strip shape toward the rear side of the lamp on the outer peripheral surface of the front end portion 26B1. These five heat radiating fins 26B2 are formed at positions where the light source unit 20 has an apex position and at equal intervals (specifically, 45 ° intervals) on the left and right sides from the apex position.

  The light source unit 20 has a configuration in which an elastic seal member 28 is attached to the front end portion of the socket 26. The elastic seal member 28 is composed of an annular member having elasticity such as an O-ring fitted on the outer peripheral surface of the socket body 26A, and is mounted in a state in contact with the front end portion 26B1 of the heat sink 26B. Then, when the light source unit 20 is mounted on the housing 12, the elastic seal member 28 is pressed against the wall portion 12c and is elastically compressed and deformed, thereby ensuring airtightness in the lamp chamber. It is like that.

  As shown in FIG. 8, the opening 12c1 of the housing 12 has an uneven shape corresponding to the plurality of engaging protrusions 26Aa formed on the socket body 26A. The uneven shape of the opening 12c1 is formed by a positional relationship in which the plurality of engaging protrusions 26Aa of the light source unit 20 (indicated by a two-dot chain line in the drawing) in the mounted state are rotated 45 ° clockwise in front view of the lamp. Has been.

  At one position around the opening 12c1 on the front surface of the rear wall 12c of the housing 12, there is an engagement protrusion of the socket body 26A when the socket body 26A inserted into the opening 12c1 is rotated 45 ° clockwise. A stopper 12c2 is formed in contact with the portion 26Aa to restrict further rotation.

  As shown in FIG. 9A, on the rear surface of the rear wall portion 12c of the housing 12, a rib 12c3 extending toward the rear of the lamp so as to surround the opening portion 12c1 is formed.

  The rib 12c3 is formed so as to surround the opening 12c1 over the entire circumference, and a notch 12c3a is formed at the lower end thereof.

  The rib 12c3 is formed so as to extend along a cylindrical surface with the central axis of the light source unit 20 as the center. At this time, the rib 12c3 is formed so as to extend to the rear side of the lamp rather than the position where the elastic seal member 28 is pressed against the rear wall portion 12c of the housing 12. Specifically, as shown in FIG. 1, the rear end surface of the rib 12c3 is located further on the rear side of the lamp than the contact position between the elastic seal member 28 and the front end portion 26B1 of the heat sink 26B. The central axis of the light source unit 20 is located in the vicinity of the upper part of the optical axis Ax. When the light source unit 20 is mounted on the housing 12, the light emitting element 22 is arranged in a state where the lower end edge of the light emitting surface extends in the horizontal direction near the upper portion of the optical axis Ax ( (See FIGS. 3 and 8).

  As shown in FIG. 9A, a mark 12c3b indicating a predetermined mounting position of the rotationally mounted light source unit 20 is formed on the outer peripheral surface of the rib 12c3. The mark 12c3b is formed at a position directly above the central axis of the light source unit 20, and indicates that the light source unit 20 is mounted in an upright state.

  Further, another mark 12c3c is formed on the outer peripheral surface of the rib 12c3 at a position rotated 45 ° counterclockwise from the mark 12c3b in the lamp rear view. The mark 12c3c is for indicating an angular position when the light source unit 20 is inserted into the opening 12c1.

  At that time, the mark 12c3b is formed as a triangular protrusion in the rear view of the lamp. On the other hand, the mark 12c3c is formed as a semicircular arc-shaped protrusion in the lamp rear view.

  Next, the effect of this embodiment is demonstrated.

  In the vehicular lamp 10 according to the present embodiment, since the lens holder 34 that supports the projection lens 32 is supported so as to be rotatable in the vertical direction with respect to the housing 12, the light emitting element 22 remains fixed to the housing 12. In this state, the optical axis adjustment in the vertical direction can be performed. Therefore, the vehicular lamp 10 can have a compact configuration, which can be particularly suitable for a fog lamp or the like.

  In addition, since the light emitting element 22 as a light source is configured as a part of the light source unit 20 including the socket 26 that supports the substrate 24 on which the light emitting element 22 is mounted, the configuration of the lamp is simplified. be able to.

  At this time, the light source unit 20 is configured to be attached to the housing 12 by inserting the socket 26 into the opening 12c1 formed in the rear wall 12c1 of the housing 12 and rotating the socket 26. It is possible to accurately position the lamp in the longitudinal direction.

  In the first embodiment, the projection lens 32 has been described as having a plano-convex lens shape. However, the projection lens 32 has a biconvex lens shape, a convex meniscus lens shape, or a Fresnel lens shape. It is also possible to do.

  In the first embodiment, the description has been given on the assumption that the opening 36a is formed at the rear end of the reflecting member 36. However, it is assumed that the portion located in the opening 36a is formed as a through lens. Is also possible.

  In the first embodiment, the housing 12 that supports the light distribution control unit 30 has been described as a lamp body. However, other lamp component members (for example, members supported by the lamp body) are employed. Is also possible.

  In the first embodiment, the vehicular lamp 10 has been described as a fog lamp. However, the vehicular lamp 10 may be configured as a lamp other than this (for example, a headlamp).

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

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

  FIG. 9B is a view similar to FIG. 9A, partially showing a vehicle lamp according to the present modification.

  As shown in FIG. 5B, the basic configuration of this modification is the same as that of the first embodiment, but the structure for mounting the light source unit 20 to the housing 112 is the case of the first embodiment. And partly different.

  That is, also in this modification, the light source unit 20 is mounted on the housing 112 by inserting the socket 26 of the light source unit 20 into the opening (not shown) of the housing 112 from the rear side of the lamp and rotating it by a predetermined angle clockwise. Although it is attached, it differs from the above embodiment in that the reverse rotation prevention structure 160 is provided in the housing 112.

  The reverse rotation prevention structure 160 is a structure for preventing the light source unit 20 from rotating in a loosening direction from a predetermined mounting position by contact with the socket 26.

  Specifically, the reverse rotation prevention structure 160 includes a contact member 162 for contacting the socket 26 and a screw 164 as a fastening member for fastening the contact member 162 to the rear wall portion 112c of the housing 112. It is the composition provided with.

  The screw 164 is configured to fix the contact member 162 to the rear wall portion 112c of the housing 112 at a position directly below the light source unit 20.

  In order to realize this, a boss portion 112c4 for fixing the screw 164 at a position directly below the optical axis Ax is formed in the rear wall portion 112c of the housing 112.

  Also in the housing 112 of this modification, a rib 112c3 extending along a cylindrical surface centering on the central axis of the light source unit 20 is formed on the rear surface of the rear wall portion 112c. At this time, the rib 112c3 is formed so that the lower end portion thereof extends to the vicinity of the boss portion 112c4, and thereby the notch portions 112c3a are formed on the left and right sides of the boss portion 112c4.

  The height of the rib 112c3 (that is, the rearward protrusion amount) is set to the same value as the rib 12c3 of the above embodiment. Further, the same marks 112c3b and 112c3c are formed on the outer peripheral surface of the rib 112c3 at the same position as in the above embodiment.

  The contact member 162 is a resin plate-like member, and is fastened to the boss portion 112c4 of the housing 112 by a screw 164, and extends along the rib 112c3 from the fastening portion 162A in both the left and right directions. The configuration includes a pair of arm portions 162B.

  The abutting member 162 is configured such that the distal end surfaces of the pair of left and right arm portions 162B abut (or approach) the heat sink 26B of the light source unit 20 in a state where the abutting member 162 is fixed to the boss portion 112c4 of the housing 112 by screws 164. It has become. At this time, the contact of the contact member 162 with the heat sink 26B is performed with respect to the pair of left and right radiating fins 26B2 located at the lowermost end of the five radiating fins 26B2. The contact member 162 prevents the light source unit 20 from rotating in a loosening direction from a predetermined mounting position by contacting the heat sink 26B with the heat radiation fin 26B2.

  Further, the abutting member 162 is formed so that the inner peripheral edge of each arm portion 162B extends along the outer peripheral surface of the front end portion 26B1 of the heat sink 26B in a state of being fixed to the boss portion 112c4 of the housing 112.

  The screw 164 is configured as a seated screw, and has a screw hole shape that can transmit only a rotational force in a direction in which the screw 164 is tightened. That is, the screw hole 164a of the screw 164 has a shape in which a wall surface located in the counterclockwise direction with respect to the plus (+)-shaped groove portion is omitted.

  Even when the configuration of the present modification is employed, the same operational effects as those of the first embodiment can be obtained.

  In addition, since the light source unit 20 is always held at a predetermined mounting position by using the structure provided with the reverse rotation prevention structure 160 as in this modification, it is formed by light from the light source emitted from the projection lens 32. Thus, it is possible to prevent the fog lamp light distribution pattern from being different from the intended shape.

  Further, in the present modification, the housing 112 is provided with the reverse rotation prevention structure 160 that prevents the light source unit 20 from rotating in the direction of loosening from the predetermined mounting position by contact with the socket 26. It is possible to prevent the shape of the light distribution pattern formed by the light from the light emitting element 22 emitted from the lens 32 from being different from the intended shape.

  In addition, the light emitting element 22 of the light source unit 20 has a configuration in which a plurality of white light emitting diodes are arranged adjacent to each other, and when the light source unit 20 rotates to a predetermined mounting position, the light emitting surface of the light emitting element 22 changes. Since the lower end edge of the light emitting surface is configured to extend horizontally in the vicinity of the upper part of the optical axis Ax, the horizontally long line having a horizontal cut-off line at the upper end edge. Thus, the vehicular lamp can be made particularly suitable for a fog lamp or the like.

  At this time, in the present modification, the reverse rotation prevention structure 160 fastens the contact member 162 for contacting the socket 26 of the light source unit 20, and the contact member 162 to the rear wall portion 112 c of the housing 112. Therefore, the light source unit 20 can be prevented from rotating in a loosening direction from a predetermined mounting position with a simple configuration.

  The light source unit 20 includes a socket body 26A and a heat sink 26B fixed to the socket body 26A as a configuration of the socket 26. Since the contact is made to the heat sink 26B, the following operational effects can be obtained.

  That is, the heat sink 26B is made of a hard metal member and hardly deforms even when the contact member 162 contacts, so that the light source unit 20 is reliably prevented from rotating in the loosening direction from the mounting position. be able to.

  Furthermore, in this modification, since the fastening member is constituted by the screw 164, the contact member 162 can be fastened with a simple configuration.

  In addition, since the screw 164 has a screw hole 164a that can transmit only the rotational force in the direction in which the screw 164 is tightened, the screw 164 is unintentionally operated by the driver after the vehicle lamp 10 is assembled. It is possible to prevent the light source unit 20 from being removed and being in a state where it can be rotated in the direction of loosening from the mounting position.

  In this modification, the contact member 162 includes a fastening portion 162A fixed to the rear wall portion 112c of the housing 112 and a pair of arm portions 162B extending from the fastening portion 162A, and the fastening portion 162A. Since the front end surfaces of the pair of arm portions 162B are in contact with or in close proximity to the heat sink 26B in a state in which the housing 112 is fastened to the rear wall portion 112c of the housing 112, the contact member 162 can be easily positioned. Can do.

  At that time, the heat sink 26B is provided with a front end portion 26B1 formed in a disc shape and five radiating fins 26B2 extending in a strip shape toward the rear side of the lamp on the outer peripheral surface thereof. The pair of radiating fins 26B2 is located at the end in the circumferential direction of the five radiating fins 26B2 in which the tip surfaces of the pair of arm portions 162B are in contact with or close to the heat sink 26B. Therefore, the contact member 162 can be positioned more easily.

  Further, the contact member 162 has a pair of arm portions 162B extending along the outer peripheral surface of the front end portion 26B1 of the heat sink 26B when the fastening portion 162A is fastened to the rear wall portion 112c of the housing 112. Since it is comprised, a pair of arm part 162B can be utilized as a guide at the time of fixing the contact member 162 to the rear wall part 112c of the housing 112. FIG.

  Further, since the contact member 162 is formed of a resin plate-like member, the reverse rotation prevention structure 160 can be configured to be simple and lightweight.

  In the first modified example, the fastening member is described as being configured by the screw 164, but it may be configured by a clip or the like.

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

  FIG. 10 is a view similar to FIG. 1 showing a vehicular lamp 210 according to this modification.

  As shown in the figure, the basic configuration of this modification is the same as that of the first embodiment, but the configuration of the light distribution control unit 230 is partially different from that of the first embodiment. .

  The light distribution control unit 230 of the present modification also includes a projection lens 232, a lens holder 234, and a reflection member 236, but the reflection member 236 is configured separately from the lens holder 234. This is different from the above embodiment.

  Specifically, in the light distribution control unit 230 of this modification, heat caulking is performed with the reflecting member 236 sandwiched between the projection lens 232 and the lens holder 234.

  In order to realize this, an outer peripheral flange portion 236b is formed at the front end portion of the reflecting member 236, while an inner peripheral edge portion of the main body portion 234A of the lens holder 234 is engaged with the outer peripheral flange portion 236b of the reflecting member 236. In addition, an annular lens pressing portion 234Ab is formed which positions the reflecting member 236 in a state where the reflecting member 236 is in contact with the rear surface of the projection lens 232. Then, with the reflecting member 236 sandwiched between the projection lens 232 and the lens holder 234, the caulking projections 232 a formed at four locations on the outer peripheral edge of the rear surface of the projection lens 232 are the main body portion of the lens holder 234. Thermal caulking is performed in a state of being inserted through insertion holes (not shown) formed at four locations of 234A.

  The projection lens 232 has a configuration in which a caulking projection 232a is formed longer than the projection lens 32 of the first embodiment, but other configurations are the same as in the case of the first embodiment. It is.

  Further, the lens holder 234 is different from the lens holder 34 of the first embodiment in the configuration of the main body portion 34A, but the configuration of the pair of left and right legs 234L and 234R and the protruding piece 234B is the same as that of the first embodiment. It is the same as the case of the form.

  Further, the configuration of the reflective member 236 other than the outer peripheral flange portion 236b is the same as that of the first embodiment.

  Even when the configuration of the present modification is employed, the same operational effects as those of the first embodiment can be obtained.

  Further, by adopting the configuration of the present modification, the support of the reflection member 36 can be realized by an inexpensive fixing structure, although the reflection member 36 and the lens holder 34 are configured separately. .

  Furthermore, by configuring the reflecting member 36 separately from the lens holder 34 as in this modification, the degree of freedom in shape of the reflecting member 36 can be increased.

  Next, a second embodiment of the present invention will be described.

  FIG. 11 is a plan sectional view showing the vehicular lamp 510 according to the present embodiment, and FIG. 12 is a detailed sectional view taken along line XII-XII in FIG.

  As shown in these drawings, the basic configuration of the vehicular lamp 510 according to the present embodiment is the same as that of the first embodiment, but the vehicular lamp 510 is provided at the left front end of the vehicle. It is configured as a fog lamp.

  In this vehicular lamp 510, the shapes of the housing 512 and the translucent cover 514 are partially different from those of the first embodiment, and the configurations of the light distribution control unit 530 and the reflecting member 536 are the same as those of the first embodiment. It is different from the case of.

  That is, the translucent cover 514 of this embodiment also includes a cover main body portion 514A having a laterally oblong outer shape when viewed from the front of the lamp, and an outer peripheral flange portion 514B positioned on the outer peripheral side. The cover 514 is disposed in a state of facing the vehicle front direction, and is supported by the housing 512 on a vertical plane orthogonal to the vehicle front-rear direction.

  The light distribution control unit 530 of the present embodiment also includes a projection lens 532 that deflects and controls direct light from the light emitting element 22 and a lens holder 534 that supports the projection lens 532. This support is performed by fitting the projection lens 532 into the lens holder 534 (this will be described later).

  The projection lens 532 has a lens body portion 532A having a front surface formed in a convex shape and a rear surface formed in a flat shape, and an annular surface flush with the rear surface of the lens body portion 532A on the outer peripheral side of the lens body portion 532A. And a formed outer peripheral flange portion 532B. This projection lens 532 has a laterally elliptical outer shape when viewed from the front of the lamp, but an uneven portion for fitting into the lens holder 534 is formed on the outer peripheral surface of the outer peripheral flange portion 532B. (This will also be described later).

  The lens holder 534 has a structure in which a pair of leg portions 534L and 534R extending toward the rear of the lamp are formed on the left and right sides of the annular main body portion 534A. The pair of left and right leg portions 534L and 534R are formed with the same length, and fulcrum protrusion portions 534La and 534Ra are formed on the outer surface of the rear end portion, respectively.

  The fulcrum protrusion 534Ra of the right leg 534R is inserted into a fulcrum engaging recess 512a1 formed in the right wall 512a of the housing 512, and the fulcrum protrusion 534La of the left leg 534L is inserted to the left of the housing 512. By inserting the lens holder 534 into the fulcrum engaging hole 512b1 formed in the wall portion 512b, the lens holder 534 is supported so as to be rotatable around the rotation axis Ax1 with respect to the housing 512.

  A vent hole (not shown) similar to the vent hole 12b3 of the first embodiment is formed in the left side wall part 512b of the housing 512. The left side wall part 512b is associated with the vent hole and the fulcrum. A filter 50 for closing the joint hole 512b1 is mounted from the outer surface side.

  Protrusion portions 534Lb and 534Rb for preventing separation are formed on the outer surfaces of the front end portions of the leg portions 534L and 534R, respectively.

  Each of the protrusions 534Lb and 534Rb for preventing detachment has a trapezoidal outer shape that is long in the front-rear direction of the lamp in plan view, and the front end surfaces of the protrusions 534Lb and 534Rb It is formed at a close height. At this time, the fulcrum protrusions 534La and 534Ra are supported by the fulcrum engagement holes 512b1 in the gaps between the front end surfaces of the separation preventing protrusions 534Lb and 534Rb and the inner surfaces of the left and right side walls 512b and 512a. And it is set to a value smaller than the insertion depth in a state where it is engaged with each of the fulcrum engaging recesses 512a1.

  A projection piece 534B extending toward the rear of the lamp is formed on the left side of the lens holder 534. The protrusion 534B is formed to extend in a plate shape along a vertical plane parallel to the optical axis Ax below the left leg 534L, and is formed on the inner surface of the rear end of the rear region 534Ba. In the groove portion 534Ba1, the optical axis adjusting screw 40 disposed on the overhang portion 512d of the housing 512 is screwed.

  Also in this embodiment, the rotationally mounted light source unit 20 is mounted on the rear wall portion 512c of the housing 512. The opening portion 512c1 for mounting is on the right side (that is, the vehicle width) from the center position of the rear wall portion 512c. It is formed at a position displaced inward. As a result, the maximum diffusion angle of the emitted light from the projection lens 532 to the outside in the vehicle width direction is made larger than the maximum diffusion angle to the inside in the vehicle width direction.

  The rear wall portion 512c of the housing 512 is formed as a cylindrical stepped portion 512g in which the peripheral portion of the opening portion 512c1 is displaced forward of the lamp relative to the other general portions.

  The raised portion 512g has an inner peripheral surface shape that is slightly larger than the outer peripheral shape of the light source unit 20, and the forward displacement amount of the light emitting surface of the light emitting element 22 of the light source unit 20 is the rotation axis with respect to the lamp front-rear direction. It is set to be the same position as Ax1.

  Also in this embodiment, a rib 512c3 is formed on the rear surface of the rear wall portion 512c of the housing 512 so as to surround the opening portion 512c1 and extend rearward of the lamp. The rib 512c3 is a general portion of the rear wall portion 512c. The inner peripheral surface of the raised portion 512g is formed to be flush with the inner peripheral surface of the raised portion 512g.

  The rib 512c3 is set to have the same amount of rearward protrusion from the general portion of the rear wall portion 512c as the rib 12c3 of the above embodiment. Therefore, the position of the rear end surface of the rib 512c3 is considerably displaced rearward from the contact position between the elastic seal member 28 and the front end portion 26B1 of the heat sink 26B.

  Also in the present embodiment, on the rear side of the lamp with respect to the projection lens 532, a reflecting member for reflecting external light that enters the inner space of the housing 12 through the transparent cover 14 and the projection lens 32 from the front side of the lamp. 536 is arranged.

  The reflecting member 536 is an opaque resin member, is configured separately from the lens holder 34, and is supported by the housing 512.

  The reflection member 536 is formed in a flat plate shape so as to surround the light source unit 20, and a reflection surface treatment such as aluminum vapor deposition is performed on the front surface, and a plurality of reflection elements 536 s are formed. Each reflection element 536s is formed as a triangular pyramid-shaped recess, and retroreflects the light reaching the reflection element 536s.

  The reflecting member 536 is fitted into the outer peripheral surface of the stepped-up portion 512g in the cylindrical portion 536a extending from the rear surface toward the rear of the lamp. At this time, the reflecting member 536 is configured such that the plurality of reflecting elements 536 s are located on the rear side of the lamp with respect to the light emitting surface of the light emitting element 22 in the light source unit 20. The light does not enter each reflective element 536s.

  FIG. 13 is a front view showing the housing 512 in which the light source unit 20 is mounted.

  As shown in the figure, also in this embodiment, a groove portion 512a2 extending from the fulcrum engaging recess 512a1 toward the front of the lamp is formed on the inner side surface of the right side wall portion 512a of the housing 512. A groove portion 512b2 extending from the fulcrum engaging hole 512b1 toward the front of the lamp is formed on the inner side surface of the left side wall portion 512b of 512.

  Each groove part 512a2, 512b2 is formed so that the vertical width and the depth thereof gradually increase toward the front of the lamp.

  The rear wall 512c of the housing 512 is formed with a vent hole 512h that passes through the rear wall 512c.

  The vent hole 512h is positioned between the stepped-up portion 512g and the protruding portion 512d where the optical axis adjusting screw 40 is disposed in the vehicle width direction, and is positioned above the rotation axis Ax1 in the vertical direction. Is formed.

  As shown in FIG. 12, the vent hole 512h is formed in a boss portion 512i protruding from the rear wall portion 512c toward the rear of the lamp.

  The vent hole 512h includes a penetrating portion formed in the upper half portion of the boss portion 512i and extending in the front-rear direction of the lamp, a deep hole portion opened to the rear side of the lamp in the lower half portion of the boss portion 512i, and a lower end of the boss portion 512i. And a cutout portion formed so as to cut out a part of the deep hole portion.

  A filter 552 formed in a short cylindrical shape with an outer diameter slightly smaller than the outer diameter of the boss portion 512i is attached to the rear end surface of the boss portion 512i.

  The filter 552 is accommodated in an internal space of a resin cap 554, and the cap 554 is attached to the rear end portion of the boss portion 512i so as to come into contact with the rear end surface of the boss portion 512i. It is like that. The filter 552 blocks the vent hole 512h in the middle of the vent path.

  The filter 552 is configured as a sponge-like filter having air permeability. That is, the filter 552 is configured as a porous filter in which a plurality of holes (for example, holes having a diameter of about 0.3 to 2.5 mm) are formed in a three-dimensional mesh shape.

  Comparing this filter 552 and the filter 50 shown in FIG. 11 (filter attached to the left side wall portion 512b of the housing 512), the filter 50 is superior to the filter 552 in terms of waterproofness and moisture diffusibility. Regarding the air permeability, the filter 552 is superior to the filter 50.

  FIG. 14 is a rear view showing a state when the projection lens 532 is assembled to the lens holder 534 in the light distribution control unit 530 of the present embodiment. FIG. 15 is a perspective view showing the state of this assembly as viewed obliquely from the lower rear.

  As shown in these drawings, the lens holder 534 has lens fastening portions 534Ab and 534Ac formed at two positions on the rear surface of the main body portion 534A, and is positioned on the inner surface of the right leg portion 534R. A rib 534Rc is formed, and a positioning rib 534Bc is formed on the inner surface of the projection piece 534B.

  As shown in FIG. 11, the lower lens fastening portion 534Ac is formed as an H-shaped protrusion that extends from the rear surface of the main body portion 534A of the lens holder 534 toward the rear of the lamp. That is, the lens fastening portion 534Ac has a configuration in which a horizontally long rectangular lens locking hole 534Ac1 is formed at a front end portion thereof, and a horizontally long rectangular guide recess 534Ac2 is formed at a rear end portion thereof.

  The lens fastening portion 534Ab located on the upper side has the same configuration as the lens fastening portion 534Ac, and has a configuration in which a lens locking hole 534Ab1 and a guide recess 534Ab2 are formed. However, the lens fastening portion 534Ab is set to have a lateral width greater than that of the lens fastening portion 534Ac.

  The positioning rib 534Rc of the right leg 534R and the positioning rib 534Bc of the protrusion 534B are formed to extend from the rear surface of the main body portion 534A toward the rear of the lamp. At that time, as shown in FIG. 11, the positioning rib 534Bc is formed to extend longer than the positioning rib 534Rc.

  If the positioning rib 534Rc is made as long as the positioning rib 534Bc, the leg portion 534L is prevented from elastically deforming when the light distribution control unit 530 is assembled to the housing 512, so the positioning rib 534Rc is formed short. Has been.

  As shown in FIGS. 14 and 15, the outer peripheral flange portion 532B of the projection lens 532 has fastening engaging portions 532Ba and 532Bb formed at two positions on the upper and lower sides of the outer peripheral surface. Rib engaging portions 532Bc and 532Bd are formed at the locations.

  Each of the fastening engaging portions 532Ba and 532Bb has a configuration in which engaging protrusions 532Ba2 and 532Bb2 are formed at the center of the notches 532Ba1 and 532Bb1.

  The engaging protrusions 532Ba2 and 532Bb2 of the fastening engaging portions 532Ba and 532Bb are formed with a slightly narrower left and right width than the lens locking holes 534Ab1 and 534Ac1 of the lens fastening portions 534Ab and 534Ac of the lens holder 534. And as shown also in FIG. 11, the outer surface of the part located near the lamp front is formed in the shape of a slope.

  Further, the notches 532Ba1 and 532Bb1 of the fastening engaging portions 532Ba and 532Bb are formed to be slightly wider than the lens fastening portions 534Ab and 534Ac of the lens holder 534.

  The rib engaging portion 532Bc located on the right side is a concave portion having the same shape as the positioning rib 534Rc of the leg portion 534R at the center portion of the convex portion 532Bc1 formed so as to be close to the inner surface of the leg portion 534R of the lens holder 534. 532Bc2 is formed.

  The rib engagement portion 532Bd located on the left side has the same shape as the positioning rib 534Bc of the projection piece 534B at the lower portion of the projection 532Bd1 formed so as to be close to the leg portion 534L of the lens holder 534 and the inner surface of the projection piece 534B. The recess 532Bd2 having the structure is formed.

  Further, the outer peripheral flange portion 532B of the projection lens 532 is provided with positioning projections 532Be having a hemispherical shape in an L shape at three positions on the front surface thereof.

  The light distribution control unit 530 is assembled by fitting the projection lens 532 into the lens holder 534 from the rear side of the lamp. At this time, the projection lens 532 is moved upward with the lens holder 534 disposed downward. Assembling can be easily performed by fitting from the side.

  Specifically, when the pair of upper and lower engaging projections 532Ba2 and 532Bb2 of the projection lens 532 are placed along the pair of upper and lower guide recesses 534Ab2 and 534Ac2 of the lens holder 534, the recess 532Bd2 on the left side of the projection lens 532 is placed. Engages with the positioning rib 534Bc of the lens holder 534 naturally. At this time, the concave portion 532Bc2 on the right side of the projection lens 532 is not yet engaged with the positioning rib 534Rc of the lens holder 534. However, when the projection lens 532 is pushed further downward in this state, the concave portion 532Bc2 on the right side is aligned with the positioning rib 534Rc. By engaging, positioning in the vertical direction and the horizontal direction is performed. At this time, positioning projections 532Be formed at three positions on the front surface of the outer peripheral flange portion 532B of the projection lens 532 abut on the rear surface of the main body portion 534A of the lens holder 534, so that the depth direction (that is, the lamp front-rear direction) Positioning is done.

  Next, the effect of this embodiment is demonstrated.

  In the vehicular lamp 510 according to the present embodiment, since the lens holder 534 that supports the projection lens 532 is supported so as to be rotatable in the vertical direction with respect to the housing 512, the light emitting element 22 remains fixed to the housing 512. In this state, the optical axis adjustment in the vertical direction can be performed. Therefore, the vehicular lamp 510 can have a compact configuration, which can be particularly suitable for a fog lamp or the like.

  Also in this embodiment, since the light emitting element 22 as a light source is configured as a part of the light source unit 20, the lamp configuration can be simplified.

  At this time, the light source unit 20 is configured to be attached to the housing 512 by inserting and rotating the socket 26 into the opening 512c1 formed in the rear wall portion 512c of the housing 512. Can be accurately positioned with respect to the front-rear direction of the lamp.

  In addition, the numerical value shown as a specification in said each embodiment and its modification is only an example, and of course, you may set these to a different value suitably.

  Further, the present invention is not limited to the configurations described in the above embodiments and modifications thereof, and configurations in which various other changes are added can be employed.

10, 210, 510 Vehicle lamp 12, 112, 512 Housing 12a, 512a Right side wall portion 12a1, 512a1 Support point engaging recess (support point engaging portion)
12a2, 12b2, 512a2, 512b2 Groove 12b, 512b Left side wall 12b1, 512b1 Support point engaging hole (support point engaging part)
12b3 Vent hole 12b4 Annular bead part 12b5 Flat part 12c, 112c, 512c Rear wall part 12c1, 512c1 Opening part 12c2 Stopper 12c3, 112c3, 512c3 Rib 12c3a, 112c3a Notch part 12c3b, 12c3d, 12c3c, 112c3b 12d1 Detachment prevention part 12e Annular groove part 12f Bracket 14, 514 Translucent cover 14A, 514A Cover body part 14B, 514B Outer flange part 14Ba Overhang flange part 14Bb Annular projection part 20 Light source unit 22 Light emitting element (light source)
24 substrate 26 socket 26A socket body 26Aa engaging projection 26Ab connector 26B heat sink 26B1 front end 26B2 heat radiation fin 28 elastic seal member 30, 230, 530 light distribution control unit 32, 232, 532 projection lens 32a, 232a caulking projection 32A, 532A Lens body part 32B, 532B Outer peripheral flange part 34, 234, 534 Lens holder 34a Slit 34A, 234A, 534A Body part 34Aa Insertion hole 34B, 234B, 534B Projection piece 34Ba, 534Ba Rear area 34Ba1, 534Ba1 Groove part 34Bb Protrusion part 34L, 34R, 234L, 234R Leg part 34La, 34Ra Support point projection part 34Lb Reinforcement rib 36, 236, 536 Reflective member 36a Opening part 36 536 s Reflective element 40 Optical axis adjustment screw 40a Screw portion 40b Shaft portion 40c Driver insertion hole 42 O-ring 50, 552 Filter 100 Bumper 100a Opening portion 112c4 Boss portion 160 Reverse rotation prevention structure 162 Contact member 162A Fastening portion 162B Arm portion 164 Screw 164a Screw hole 234Ab Lens holding part 236b Outer peripheral flange part 512g Raised part 512h Vent hole 512i Boss part 532Ba, 532Bb Fastening engagement part 532Ba1, 532Bb1 Notch part 532Ba2, 532Bb2 Engaging protrusion part 532B 532c Rib part 532B 532Bc1, 532Bd1 Convex part 532Bc2, 532Bd2 Concave part 532Be Positioning projection part 534Ab, 534Ac Lens fastening part 534Ab1, 534Ac1 Lens locking Holes 534Ab2, 534Ac2 Guide recesses 534Bc, 534Rc Positioning ribs 534L, 534R Legs 534La, 534Ra Support point projections 534Lb, 534Rb Detachment prevention projections 536a Cylindrical portion 554 Cap Ax Optical axis Ax1 Axis axis Ax2 Axis axis Ax2

As shown in the figure, the left wall 12b of the housing 12 is formed with a ventilation hole 12b3 penetrating the left wall 12b in the vehicle width direction above the fulcrum engagement hole 12b1 . The vent hole 12b3 is for absorbing pressure fluctuations associated with the temperature change of the gas in the lamp chamber, and is formed so as to surround the fulcrum protrusion 34La in an arc shape, and is more than the fulcrum engagement hole 12b1. It has a large opening shape.

Further, since a groove portion 12b2 extending from the fulcrum engagement hole 12b1 toward the front of the lamp is formed on the inner side surface of the left wall portion 12b of the housing 12, the left leg portion 34L is inserted into the housing 12. By engaging the fulcrum projection 34La with the groove 12b2, it is possible to move the fulcrum protrusion 34La to the rear side of the lamp while being guided in the vertical direction, thereby facilitating insertion into the fulcrum engagement recess 12a1 . Is possible.

Claims (10)

In a vehicular lamp configured to control light distribution from a light source by a projection lens,
A lens holder that supports the projection lens, and a housing that rotatably supports the lens holder about a rotation axis extending in the vehicle width direction,
The light source is configured as the light emitting element in a light source unit including a light emitting element, a substrate on which the light emitting element is mounted, and a socket that supports the substrate.
The light source unit is attached to the housing by inserting and rotating the socket into an opening formed in a rear wall portion of the housing,
A vehicular lamp, wherein the housing is provided with a reverse rotation prevention structure that prevents the light source unit from rotating in a loosening direction from a predetermined mounting position by contact with the socket. The light emitting element has a configuration in which a plurality of white light emitting diodes are arranged adjacent to each other.
The vehicular lamp according to claim 1, wherein the light emitting element is configured such that a light emitting surface of the light emitting element extends horizontally when the light source unit rotates to the predetermined mounting position.   The reverse rotation prevention structure includes a contact member for contacting the socket and a fastening member for fastening the contact member to a rear wall portion of the housing. The vehicle lamp according to 1 or 2. The socket includes a socket body and a heat sink fixed to the socket body,
The vehicular lamp according to claim 3, wherein the abutting member abuts on the socket with respect to the heat sink.   The vehicular lamp according to claim 3 or 4, wherein the fastening member is formed of a screw.   6. The vehicular lamp according to claim 5, wherein the screw has a screw hole shape capable of transmitting only a rotational force in a direction in which the screw is tightened. The contact member includes a fastening portion fixed to the rear wall portion of the housing, and a pair of arm portions extending from the fastening portion.
The contact member is configured such that the front end surfaces of the pair of arm portions are in contact with or close to the heat sink in a state where the fastening portion is fastened to the rear wall portion of the housing. The vehicular lamp according to any one of claims 4 to 6. The heat sink includes a front end portion formed in a disc shape and a plurality of heat radiation fins extending in a strip shape toward the rear side of the lamp on the outer peripheral surface of the front end portion, and is fixed to the socket body at the front end portion. And
The contact or proximity of the tip surfaces of the pair of arm portions to the heat sink is performed with respect to the pair of heat radiation fins located at the circumferential ends of the plurality of heat radiation fins. The vehicular lamp according to claim 7.   The contact member is configured such that the pair of arm portions extend along the outer peripheral surface of the front end portion of the heat sink in a state where the fastening portion is fastened to the rear wall portion of the housing. The vehicular lamp according to claim 8.   The vehicular lamp according to any one of claims 3 to 9, wherein the contact member is formed of a resin plate-like member.

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