JP6640514B2 - Vehicle lamp with wiring trouble prevention mechanism - Google Patents

Description

  The present invention relates to a vehicular lamp provided with a mechanism for preventing wiring trouble due to vibration of a vehicle body and movement of a light source unit.

  2. Description of the Related Art Conventionally, there has been known a vehicular lamp in which an electric device such as a light source or an actuator is mounted on a light source unit, and a power supply cord connected to the electric device does not come into contact with peripheral members as the light source unit moves. For example, in a vehicle headlight disclosed in Patent Document 1, a connector that is connected to an external power supply is provided on a bracket that supports a light source unit, a power supply cord between the connector and the electric device is wired inside the bracket, and the vehicle travels. The power supply cord is prevented from being damaged or disconnected due to the vibration of the vehicle body and the movement of the light source unit at the time.

JP 2014-146465 A

  However, according to the conventional vehicle lamp, it is necessary to loosen a plurality of power supply cords between the bracket and the electric device so that the light source unit can rotate or tilt. With the movement, there is a possibility that a surplus portion of some power supply cords (for example, a power supply cord connected to an electric device located far from the connector of the bracket) may still come into contact with peripheral members.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicular lamp capable of reliably preventing wiring troubles caused by vibration of a vehicle body and movement of a light source unit.

  In order to solve the above-described problems, a vehicle lamp of the present invention is provided with a light source unit rotatably or tiltable via a bracket in a lamp housing, an electric device including a light source mounted on the light source unit, and an electric device. One end of the power supply cord is connected, and the power supply cord is held on a metal member on the light source unit by a holding member at a portion different from the one end.

  Here, the other end of the power supply cord is not particularly limited. For example, the other end may be connected to a connector on the bracket, or may be connected to an intermediate member located between the bracket and the light source unit. In the former case, the power supply cord is held by a metal member on the light source unit by a holding member between the electric device mounted on the light source unit and the bracket. In the latter case, the power supply cord is held on the metal member by the holding member between the electric device and the intermediate member.

  The present invention is not limited to a specific vehicular lamp, but can be preferably applied to, for example, a vehicular headlamp provided with a rotatable or tiltable light source unit. Further, as the electric equipment mounted on the light source unit, a light source using a light emitting element such as a bulb or an LED, a leveling actuator and / or a swivel actuator for adjusting the optical axis of the light source unit, and a shade driving actuator In addition, various power-using devices, such as sensors, cameras, and millimeter-wave radars, that move together with the light source unit in the lamp housing can be exemplified.

  In a preferred embodiment of the present invention, a part of the power supply cord connected to the electric device is firmly held by the metal member on the light source unit by the holding member. The metal member is provided on the light source unit so as to protrude in a direction different from the turning or tilting direction of the light source unit in order to prevent the holding member from falling off due to the movement of the light source unit.

  More preferably, the metal member is formed on a part of a heat sink for dissipating heat generated by the light source. By doing so, it is possible to eliminate the necessity of a mounting component dedicated to the holding member from the light source unit.

  The holding member is not limited to a specific member, and includes, for example, a clip or a clamp member for sandwiching the power supply cord and fixing to the metal member, a binding member for bundling the power supply cord and attaching to the metal member, or tightening the power supply cord. For example, a screw member fixed to a metal member can be used.

  In one embodiment of the present invention, the holding member attaches the holding portion to hold a plurality of power supply cords and the holding portion to the metal member so that the holding member can be easily attached to the metal member without using a tool. And a leaf spring for elastically gripping the metal member by insertion.

  In this case, it is preferable that the leaf spring is provided with a latching piece that elastically contacts two opposing surfaces of the metal member so as to protrude in a direction opposite to the insertion direction of the leaf spring. It is also preferable that a notch is formed in the metal member so as to shorten the contact distance of the engaging piece when the leaf spring is inserted. With this configuration, the retaining piece of the leaf spring can be bitten into the metal member by a relatively small force, and the holding member can be firmly attached to the light source unit.

  According to the vehicular lamp of the present invention, since a part of the power supply cord is held on the metal member on the light source unit by the holding member, there is an excellent effect that the wiring trouble due to the movement of the light source unit can be reliably prevented.

BRIEF DESCRIPTION OF THE DRAWINGS It is a sectional side view of the vehicle headlamp which shows one Embodiment of this invention. It is a top view which shows the light source unit of the headlight of FIG. It is a rear view of the headlight which shows the wiring structure of a light source unit. FIG. 4 is a partial perspective view of a light source unit showing a holding member and a metal member. It is sectional drawing which shows the structure of a holding member. It is a partial elevational view of the heat sink which shows the shape of the leaf | plate spring of a holding member, and a metal member. It is a partial elevational view of the heat sink which shows the modification of a metal member.

  Hereinafter, an embodiment in which the present invention is embodied in a vehicle headlamp will be described with reference to the drawings. The vehicle headlamp 1 shown in FIG. 1 includes a base 3 inside a lamp housing 2, and a light source unit 5 is provided on the base 3 via a bracket 4. The bracket 4 is supported on the base 3 by a vertical shaft 6, and is turned in the horizontal direction by a swivel actuator 7 provided on the base 3. The light source unit 5 is supported by the bracket 4 on a horizontal axis 8 and is tilted in the vertical direction by a leveling actuator 9 provided on the light source unit 5.

  Thereby, in the vehicle headlamp 1 shown in FIG. 1, the light source unit 5 can be rotated in the horizontal direction by the driving of the swivel actuator 7 and can be tilted in the vertical direction by the driving of the leveling actuator 9. It is configured. However, the vehicle lamp of the present invention is not limited to the illustrated example. For example, the bracket 4 is fixed to the base 3, and the light source unit 5 is provided so as to be tiltable only in the vertical direction, or the light source unit 5 is fixed to the bracket 4. Alternatively, it may be provided so as to be rotatable only in the horizontal direction.

  As shown in FIGS. 1 and 2, the light source unit 5 includes a light source substrate 12 having an LED light source 11, a reflector 13 that reflects the light emitted from the LED light source 11 forward of the lamp, and emits the reflected light forward of the vehicle. Projection lens 14, a movable shade 15 for changing a light distribution pattern in front of the vehicle, an actuator 16 for driving the movable shade 15, a sensor 17 for detecting the orientation of the light source unit 5, and dissipating heat generated by the LED light source 11. And a heat sink 18 are provided. The heat sink 18 is formed of a metal material such as aluminum, and the light source substrate 12 is mounted on an upper surface thereof.

  As shown in FIG. 3, a connector 19 connected to an external power supply (for example, a vehicle battery) is attached to one side of the bracket 4, and the connector 19 and a plurality of electric devices mounted on the light source unit 5 are connected to the connector 19. A plurality of power supply cords (the whole of which is indicated by reference numeral 20) are wired between them. The power supply cord 20 is inserted into the first wiring duct 21 between the connector 19 and an electric control circuit (not shown) in the base 3, and is inserted into the second wiring duct 22 between the electric control circuit and the light source unit 5. ing. The base 3 corresponds to an intermediate member located between the bracket 4 and the light source unit 5.

  The second wiring duct 22 is divided into three branch ducts 23, 24, and 25. In the first branch duct 23, a first power supply cord 26 whose tip is connected to the light source board 12, and a shade driving actuator 16 are provided. And the second power supply cord 27 connected to the second power supply cord 27 is inserted. A third power supply cord 28 whose tip is connected to the sensor 17 is inserted into the second branch duct 24, and a fourth power cord 29 whose tip is connected to the leveling actuator 9 is inserted into the third branch duct 25. Have been.

  As shown in FIGS. 2 and 3, the tip (or upper end) of the second wiring duct 22 is bound to the holding member 31 by the binding band 30, and the holding member 31 is attached to the metal member 32 on the heat sink 18. . As a result, the first to fourth power supply cords 26 to 29 inserted into the three branch ducts 23, 24, 25 are connected to one end (the connection end with the electric device) and the other end (the connection end with the base 3). ) Can be held in the light source unit 5 to prevent contact between the power supply cords 26 to 29 and peripheral members due to vibration of the vehicle body and movement of the light source unit 5. In addition, the extra length of the power supply cords 26 to 29 on the electric device side from the holding member 31 is eliminated, and the power supply cord 20 on the base 3 side from the holding member 31 is integrated into a single wiring duct 21, 22 to provide a light source. Mutual contact caused by relative movement between the unit 5 and the power supply cords 26 to 29 can also be minimized.

  As shown in FIGS. 4 and 5, the holding member 31 includes a holding portion 33 for holding the power supply cords 26 to 29, and an attachment portion 34 for attaching the holding portion 33 to the metal member 32. The holding portion 33 and the mounting portion 34 are integrally formed of resin, and the holding portion 33 has a lateral hole 35 through which the binding band 30 passes. The attachment portion 34 is formed in a clip shape having a substantially U-shaped cross section, and a U-shaped leaf spring 36 that elastically grips the metal member 32 by being inserted is provided inside the attachment portion 34. The leaf spring 36 is formed with upper and lower two-stage engaging pieces 37 and 38 elastically in contact with two opposing surfaces of the metal member 32 so as to protrude in a direction opposite to the insertion direction of the leaf spring 36. .

  Since the holding member 31 of this embodiment has the leaf spring 36 in the mounting portion 34, the holding member 31 can be easily attached to the metal member 32 without tools by utilizing the elasticity of the leaf spring 36. Further, since the upper and lower two-stage engaging pieces 37 and 38 are formed in a direction opposite to the insertion direction of the leaf spring 36, the engaging pieces 37 and 38 are made to bite into the metal member 32 and the holding member 31 is connected to the light source unit. 5 can be firmly attached.

  The metal member 32 is integrally formed in a plate shape with the same metal material (for example, aluminum material) as the heat sink 18. The metal member 32 is provided upright on the upper surface of the heat sink 18 so as to protrude upward substantially at right angles to the rotation direction (horizontal direction) of the light source unit 5. A pair of restricting pieces 39 for restricting the horizontal movement of the holding member 31 are bent in opposite directions in the left and right ends of the metal member 32, and a pair of left and right notches 40 are formed in the upper end of the metal member 32. The spring 36 is formed to be deeper in the insertion direction.

  According to this configuration, since the metal member 32 protrudes upward from the heat sink 18, it is possible to prevent the holding member 31 from falling off due to the horizontal rotation of the light source unit 5. Further, since the metal member 32 is formed integrally with the heat sink 18, it is possible to eliminate a dedicated component for attaching the holding member 31 from the light source unit 5. The projecting direction of the metal member 32 is not limited to the upward direction. For example, in the case of the light source unit 5 in which the vertical tilt amount is larger than the horizontal rotation amount, the metal member 32 is provided to project in the horizontal direction. You can also.

  As shown in FIG. 6, in a state where the holding member 31 is attached to the metal member 32, the leaf spring 36 moves the metal member 32 at a position where the two upper hook pieces 37 do not correspond to the notches 40 (the center position in the left-right direction). , And the two lower latch pieces 38 are formed so as to contact the metal member 32 at positions corresponding to the notches 40 (on both sides in the left-right direction). When the leaf spring 36 is inserted, the notch 40 functions so as to reduce the contact distance L1 between the lower hook 38 and the metal member 32. In FIG. 6, L2 indicates the contact distance of the lower hook 38 when the notch 40 is not provided (L1 <L2).

  In the modification shown in FIG. 7, the notch 41 is formed at the center in the left-right direction of the metal member 32. Then, in a state where the holding member 31 is attached to the metal member 32, the upper-stage hook 37 contacts the metal member 32 at a position not corresponding to the notch 41, and the lower-stage hook 38 corresponds to the notch 40. It comes into contact with the metal member 32 at the position. Therefore, according to the metal member 32 shown in FIGS. 6 and 7, when the leaf spring 36 is inserted, the notches 40 and 41 function to shorten the contact distance of the lower hook piece 38, so that the worker and the work robot As a result, it is possible to prevent the heat sink 18 from being damaged or the holding member 31 from being damaged by an excessive force, and to correctly attach the holding member 31 to a predetermined position.

  In addition, the wiring structure including the holding member 31 and the metal member 32 configured as described above is not limited to the vehicle headlamp 1 and various wirings provided on various parts of the vehicle body such as a rear combination lamp and a side turn signal lamp. It can also be applied to the vehicular lamp. In addition, the present invention is not limited to the above-described embodiment, and can be implemented by arbitrarily changing the shape and configuration of each part without departing from the spirit of the invention.

REFERENCE SIGNS LIST 1 vehicle headlight 2 lamp housing 3 base 4 bracket 5 light source unit 9 leveling actuator 11 LED light source 16 shade drive actuator 17 sensor 18 heat sink 26 first power supply cord 27 second power supply cord 28 third power supply cord 29 fourth power supply Cord 31 Holding member 32 Metal member 33 Holding portion 34 Attachment portion 36 Leaf spring 37 Upper latching piece 38 Lower latching piece 40 Notch 41 Notch

Claims (6)

A light source unit is rotatably or tiltably provided in a lamp housing via a bracket, an electric device including a light source is mounted on the light source unit, one end of a power supply cord is connected to the electric device, and a power supply cord is provided at a portion different from the one end. And a pair of restricting pieces for restricting horizontal movement of the holding member by bending left and right end edges of the metal member by a holding member .   The vehicular lamp according to claim 1, wherein the metal member is provided on the light source unit so as to protrude in a direction different from a rotation or tilt direction of the light source unit.   The vehicle lighting device according to claim 1, wherein the metal member is formed on a part of a heat sink for dissipating heat generated by the light source.   The holding member includes a holding portion that holds a plurality of power supply cords, and a mounting portion for mounting the holding portion to the metal member, and the mounting portion includes a leaf spring that elastically grips the metal member by insertion. The vehicle lighting device according to any one of claims 1 to 3.   The vehicular lamp according to claim 4, wherein the leaf spring is provided with a latching piece elastically in contact with two opposing surfaces of the metal member so as to project in a direction opposite to a direction in which the leaf spring is inserted.   The vehicular lamp according to claim 5, wherein the metal member includes a notch for shortening a contact distance of the hook piece when the leaf spring is inserted.

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