JP2013178905A - Lamp fitting for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology for attaining both increase of an emission area of a marker light and restraint of jumboization of a lamp fitting for a vehicle.SOLUTION: A lamp fitting for a vehicle is provided with a first lamp unit having a first light source loading part, and a first optical member with a positional relation with the first light source loading part set up so as a focus to be overlapped with a first light source. Further, the lamp fitting for the vehicle is provided with a second lamp unit 40 having a second light source loading part 42a as well as a third light source loading part 42b and a second optical member with a positional relation with the second light source loading part 42a as well as the third light source loading part 42b set up so as a focus F2 to be overlapped with a second light source 46a, and the focus F2 to be deviated from a third light source 48a. The first lamp unit makes up a first marker light, and the second lamp unit 40 lights up the second light source 46a to structure a second marker light or a headlight, and further, lights up the third light source 48a to structure the first marker light together with the first lamp unit.

Description

  The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp used in a vehicle such as an automobile.

  Patent Document 1 discloses a rear combination lamp in which a first lamp part facing the outer lens side and a second lamp part facing the reflecting surface formed on the housing are arranged back to back. Yes. In the rear combination lamp, the first lamp portion is lit as a stop lamp, and light from the first lamp portion is emitted from the outer lens to the outside. In addition, the second lamp unit is lit as a tail lamp, and the light from the second lamp unit is reflected by the reflecting surface and emitted from the outer lens to the outside.

JP 2010-153288 A

  The above-mentioned rear combination lamp has two functions of a stop lamp and a tail lamp, but in recent years, the multi-functionality of the vehicle headlamp has been improved, for example, daytime running that is lit at times other than nighttime. A vehicular lamp having a lamp (hereinafter referred to as DRL as appropriate) has been developed.

  A DRL, a clearance lamp that functions as a vehicle width lamp (hereinafter referred to as CLL as appropriate), and a turn signal lamp (hereinafter referred to as TSL as appropriate) are so-called marker lamps. The marker lamp desirably has a large light emitting area in order to exhibit its marker function.

  As a method for increasing the light emitting area of the marker lamp, it is conceivable to increase the size of the lamp unit constituting the marker lamp or to install a plurality of lamp units. However, these methods may cause an increase in the size of the vehicular lamp. In particular, as the number of functions of the vehicular lamp increases, it becomes more difficult to increase the size of the lamp unit or to secure a space that allows a plurality of lamp units to be installed.

  This invention is made | formed in view of such a subject, The objective is to provide the technique for aiming at coexistence with the increase in the light emission area of a marker lamp, and suppression of the enlargement of a vehicle lamp.

  In order to solve the above problems, an aspect of the present invention is a vehicular lamp. The vehicle lamp has a positional relationship between the first light source mounting portion and the first light source mounting portion so that the first light source mounting portion is focused on the first light source mounting portion. A first lamp unit having a first optical member that changes a traveling direction. In addition, the vehicular lamp has a focus on the second light source mounting unit and the third light source mounting unit, and the second light source mounted on the second light source mounting unit, and the third light source mounted on the third light source mounting unit. A second optical member having a positional relationship with the second light source mounting unit and the third light source mounting unit so that the focal point is deviated and changing a traveling direction of irradiation light of the second light source and the third light source. A lamp unit is provided. The first lamp unit constitutes a first marker lamp, the second lamp unit illuminates the second light source to constitute a second marker lamp or a headlamp, and the third light source illuminates the first lamp unit. Together with this, the first marker lamp is constructed.

  According to this aspect, it is possible to achieve both the increase in the light emitting area of the marker lamp and the suppression of the increase in the size of the vehicular lamp.

  In the above aspect, the second lamp unit illuminates the second light source to form a second marker lamp, and the first lamp unit has the fourth light source mounting portion at a position deviated from the focus of the first optical member, The 4th light source mounted in the 4th light source mounting part may be turned on, and the 2nd indicator lamp may be constituted with the 2nd lamp unit. According to this, the emission area of the first marker lamp and the second marker lamp can be increased while suppressing the increase in size of the vehicular lamp.

  In the above aspect, the first marker lamp may be a daytime running lamp or a clearance lamp, and the second marker lamp may be a turn signal lamp.

  ADVANTAGE OF THE INVENTION According to this invention, the technique for aiming at coexistence with the increase in the light emission area of a marker lamp and suppression of the enlargement of a vehicle lamp can be provided.

1 is a schematic front view of a vehicular lamp according to a first embodiment. It is a schematic sectional drawing along the AA line of FIG. It is a principal part enlarged view of the cross section along the BB line of FIG. FIG. 6 is an enlarged view of a first lamp unit in a vehicle lamp according to a second embodiment. It is an enlarged view of the 2nd lamp unit in the vehicle lamp which concerns on a modification.

  The present invention will be described below based on preferred embodiments with reference to the drawings. The same or equivalent components, members, and processes shown in the drawings are denoted by the same reference numerals, and repeated descriptions are omitted as appropriate. The embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

(Embodiment 1)
FIG. 1 is a schematic front view of a vehicular lamp according to the first embodiment. FIG. 2 is a schematic cross-sectional view along the line AA in FIG. FIG. 3 is an enlarged view of a main part of a cross section taken along line BB in FIG. In FIG. 3, the second lamp unit 40 is shown enlarged. Moreover, the vehicular lamp 1 according to the present embodiment is a vehicular headlamp device having a pair of headlamp units disposed on the left and right sides in front of the vehicle. Since the pair of headlamp units have substantially the same configuration except that they have a symmetrical structure, FIG. 1 shows the structure of one headlamp unit as the vehicular lamp 1.

  As shown in FIGS. 1 and 2, the vehicular lamp 1 includes a lamp body 2 having an opening on the front side of the vehicle, and a translucent cover 4 attached so as to cover the opening of the lamp body 2. The translucent cover 4 is made of translucent resin or glass. A first lamp unit 20, a second lamp unit 40, a third lamp unit 60, and a control unit 80 are accommodated in the lamp chamber 3 formed by the lamp body 2 and the translucent cover 4.

  In the lamp chamber 3, the first lamp unit 20, the second lamp unit 40, and the third lamp unit 60 are supported by the bracket 6. The bracket 6 has a substantially flat plate shape, and is arranged so that its main surface faces the lamp front-rear direction. A screw hole is provided in the upper part of the bracket 6, and an aiming screw 8 rotatably supported on the wall surface of the lamp body 2 is screwed into the screw hole. A joint receiving portion 6a is provided at the lower portion of the bracket 6 so as to protrude rearward of the lamp, and a leveling shaft 10 that penetrates the wall surface of the lamp body 2 and extends forward of the lamp is connected to the joint receiving portion 6a. Yes. A ball joint ball portion 10a is formed at the tip of the leveling shaft 10, and a spherical space 6b along the shape of the ball joint ball portion 10a is formed in the joint receiving portion 6a. The joint receiving portion 6a and the leveling shaft 10 are coupled by accommodating the ball joint ball portion 10a in the spherical space 6b. Further, the leveling shaft 10 is connected to a leveling actuator 12. The vehicular lamp 1 can adjust the optical axis of the lamp unit vertically and horizontally by an aiming screw 8, a leveling shaft 10 and a leveling actuator 12. In addition, the support structure of the 1st lamp unit 20, the 2nd lamp unit 40, and the 3rd lamp unit 60 is not specifically limited to this.

  The control unit 80 is an electronic control unit that controls turning on / off of the first lamp unit 20, the second lamp unit 40, and the third lamp unit 60. The control unit 80 is fixed to the inner wall surface of the lamp chamber 3.

  The vehicular lamp 1 of the present embodiment includes a plurality of first lamp units 20 and a plurality of second lamp units 40. The plurality of first lamp units 20 and the plurality of second lamp units 40 are arranged in the lower region of the vehicle lamp 1 so as to be aligned in the vehicle width direction. Adjacent lamp units are in contact with each other, and a plurality of first lamp units 20 and a plurality of second lamp units 40 form a line pattern. The plurality of first lamp units 20 are arranged on the outer side in the vehicle width direction, and the plurality of second lamp units 40 are arranged on the inner side in the vehicle width direction.

  As shown in FIG. 2, the 1st lamp unit 20 has the 1st protrusion part 22 and the 1st reflector 24 as a 1st optical member. The first protruding portion 22 is a substantially flat plate-like member protruding forward from the main surface of the bracket 6 on the front side of the lamp, and has a first light source mounting portion 22a at a predetermined position. The first light source module 26 is mounted on the first light source mounting portion 22a. The first light source module 26 is, for example, a white light emitting diode (white LED), and includes a first light source 26a made of a light emitting element and a substrate 26b that supports the first light source 26a. The substrate 26b is a thermally conductive insulating substrate made of ceramic or the like. An electrode (not shown) for transmitting electric power to the first light source 26a is formed on the substrate 26b.

  The first reflector 24 is an optical member for changing the traveling direction of the irradiation light of the first light source 26a. The 1st reflector 24 is substantially dome shape, and is being fixed to the 1st protrusion part 22 so that the upper direction of the light emission surface which the 1st light source 26a has may be covered. The first reflector 24 is formed with a first reflecting surface 24a on the inner side for reflecting the irradiation light of the first light source 26a toward the front of the lamp. The first reflecting surface 24a is a reflecting surface constituted by a part of a paraboloid and has a focal point F1. The positional relationship between the first reflector 24 and the first light source mounting portion 22a is determined so that the focal point F1 of the first reflecting surface 24a overlaps the first light source 26a mounted on the first light source mounting portion 22a.

  The first lamp unit 20 constitutes a first marker lamp. In the present embodiment, the first marker lamp is a DRL. That is, the 1st lamp unit 20 irradiates the irradiation light of the 1st light source 26a ahead of a lamp, and forms the light distribution pattern for DRL. For example, when the DRL light distribution pattern is formed on a virtual vertical screen disposed at a predetermined position in front of the lamp, the DRL light distribution pattern is 10 ° vertically upward, 5 ° vertically downward, and 20 ° horizontally horizontal. It is a substantially elliptical light distribution pattern extending in the range.

  As shown in FIG. 3, the second lamp unit 40 includes a second protrusion 42 and a second reflector 44 as a second optical member. The second protrusion 42 is a substantially flat plate-like member that protrudes forward from the main surface of the bracket 6 on the front side of the lamp, and has a second light source mounting part 42a and a third light source mounting part 42b at predetermined positions. The second light source module 46 is mounted on the second light source mounting portion 42a. The second light source module 46 is, for example, an amber color light emitting diode (amber color LED), and includes a second light source 46a made of a light emitting element and a substrate 46b that supports the second light source 46a. The substrate 46b has the same configuration as the substrate 26b. The third light source module 48 is mounted on the third light source mounting portion 42b. The 3rd light source module 48 is the structure similar to the 1st light source module 26, and has the 3rd light source 48a and the board | substrate 48b.

  The 2nd reflector 44 is an optical member for changing the advancing direction of the irradiation light of the 2nd light source 46a and the 3rd light source 48a. The second reflector 44 has a substantially dome shape and is fixed to the second projecting portion 42 so as to cover the light emitting surfaces of the second light source 46a and the third light source 48a. The second reflector 44 is formed with a second reflection surface 44a on the inner side for reflecting the irradiation light of the second light source 46a and the third light source 48a toward the front of the lamp. The second reflecting surface 44a is a reflecting surface constituted by a part of a paraboloid and has a focal point F2.

  In the second reflector 44, the focal point F2 of the second reflecting surface 44a overlaps with the second light source 46a mounted on the second light source mounting part 42a, and the focal point F2 with respect to the third light source 48a mounted on the third light source mounting part 42b. The positional relationship between the second light source mounting part 42a and the third light source mounting part 42b is determined so as to be shifted.

  The second lamp unit 40 constitutes a second marker lamp and a first marker lamp. In the present embodiment, the second marker lamp is a front-side TSL. That is, the 2nd lamp unit 40 lights the 2nd light source 46a, and forms the light distribution pattern for TSL. For example, when the light distribution pattern for TSL is formed on a virtual vertical screen disposed at a predetermined position in front of the lamp, the light distribution pattern for TSL has a substantially elliptical shape extending in a range of 10 ° vertically and 20 ° horizontally and horizontally. It is a light distribution pattern. In addition, the second lamp unit 40 turns on the third light source 48 a and constitutes a first indicator lamp together with the first lamp unit 20. The second lamp unit 40 forms the light distribution pattern for TSL with the irradiation light of the second light source 46a by adjusting the shape of the second reflection surface 44a and / or the position of the third light source 48a with respect to the second reflection surface 44a. The light emitted from the third light source 48a is designed to be irradiated into the formation region of the DRL light distribution pattern.

  The second lamp unit 40 functions as an auxiliary lamp, so to speak, that the main role is to increase the light emission area of the DRL when the DRL that is the first marker lamp is configured. When the vehicular lamp 1 lights the DRL, the control unit 80 turns on the third light source 48a simultaneously with turning on the first light source 26a. Accordingly, the entire pattern including the contour shape of the DRL light distribution pattern is formed by the first lamp unit 20, and the light emission area of the DRL is increased by the second lamp unit 40. The light emitting area of the DRL is the area of the light emitting area of the lamp unit that constitutes the DRL that is visually recognized from the outside of the lamp. For example, the light emitting area of the DRL is the total area of the first reflecting surface 24a and the second reflecting surface 44a when viewed from the outside of the lamp.

  Thus, in the vehicle lamp 1 according to the present embodiment, the first lamp unit 20 and the second lamp unit 40 constitute a DRL. Therefore, when the vehicular lamp 1 lights up the DRL, the line-shaped light-emitting portions extending widely in the vehicle width direction of the vehicular lamp 1 by the plurality of first lamp units 20 and the plurality of second lamp units 40 that are lit. It is formed. When the second lamp unit 40 is turned on together with the first lamp unit 20 when the DRL is turned on, the light emission area of the DRL is increased, and the viewing angle of the DRL and the illuminance of the DRL light distribution pattern are increased. Therefore, the labeling function of DRL can be enhanced. In addition, the design of the vehicular lamp 1 is also improved.

  When the vehicular lamp 1 lights the TSL, the control unit 80 lights the second light source 46a of the second lamp unit 40. Thereby, the TSL light distribution pattern is formed by the second lamp unit 40. When the third light source 48a is turned on when the second light source 46a is turned on, the control unit 80 turns off the third light source 48a. Thereby, the labeling function of TSL can be exhibited more reliably. If a pedestrian or a driver of another vehicle can sufficiently view the TSL even when the third light source 48a is turned on, the lighting state of the third light source 48a is maintained when the second light source 46a is turned on. Also good.

  In the vehicular lamp 1 of the present embodiment, the first lamp unit 20 and the second lamp unit 40 are arranged so as to be continuous. Therefore, all or part of the substrate 26b, the substrate 46b, and the substrate 48b can be shared. As a result, the cost of the vehicular lamp 1 can be reduced.

  As shown in FIG. 2, the third lamp unit 60 is a so-called projector-type lamp unit, and includes a third protrusion 62, a third reflector 64, a shade member 66, and a projection lens 68. The third projecting portion 62 is a substantially flat plate-like member that projects forward from the main surface of the bracket 6 on the front side of the lamp, and has a headlight light source mounting portion 62a at a predetermined position. The headlamp light source module 70 is mounted on the headlamp light source mounting portion 62a. The headlamp light source module 70 has the same configuration as the first light source module 26, and includes a headlamp light source 70a and a substrate 70b.

  The third reflector 64 has a substantially dome shape and is fixed to the third protrusion 62 so as to cover the headlight light source 70a. As for the 3rd reflector 64, the 3rd reflective surface 64a is formed inside. The third reflecting surface 64a is a reflecting surface constituted by a part of a spheroid, and has a focal point F3 and a focal point F4 located on the front side of the lamp with respect to the focal point F3. The shade member 66 includes a flat portion 66a that is disposed substantially horizontally and a curved portion 66b that is concavely curved downward in front of the lamp relative to the flat portion 66a. The third reflector 64 is arranged such that the focal point F3 of the third reflecting surface 64a overlaps the headlamp light source 70a, and the focal point F4 overlaps the ridgeline 66c formed by the flat portion 66a and the curved portion 66b of the shade member 66. Yes. The projection lens 68 is a plano-convex aspheric lens having a convex front surface and a flat rear surface. The projection lens 68 projects a light source image formed on the rear focal plane including the rear focus on the virtual vertical screen in front of the lamp as a reverse image. The rear focal point of the projection lens 68 is arranged so as to overlap the focal point F4.

  The 3rd lamp unit 60 comprises a headlamp. In the present embodiment, the third lamp unit 60 is a low beam lamp. Therefore, the ridgeline 66c has a shape corresponding to the cut-off line of the low beam light distribution pattern. The irradiation light of the headlamp light source 70 a is reflected by the third reflecting surface 64 a toward the focal point F 4, a part thereof is selectively cut by the shade member 66, and the rest enters the projection lens 68. This light incident on the projection lens 68 is irradiated from the projection lens 68 forward of the lamp. Thereby, a low beam light distribution pattern is formed in front of the lamp.

  In the vehicular lamp 1 according to the present embodiment, the second lamp unit 40 constitutes a TSL, but the second lamp unit 40 may constitute a headlamp. In this case, the second lamp unit 40 corresponds to a structure in which the third light source module 48 is mounted on the third lamp unit 60.

  As described above, the vehicular lamp 1 according to the present embodiment includes the first lamp unit 20 as the first marker lamp and the second lamp unit 40 that constitutes the second marker lamp as the first marker lamp. It is also used as a lamp unit. That is, the vehicular lamp 1 does not increase the size of the first lamp unit 20 or increase the number of lamps in order to increase the light emitting area of the first marker lamp, and does not increase the number of lamps. Is used to increase the emission area of the first marker lamp. Therefore, it is possible to achieve both an increase in the light emitting area of the marker lamp and a suppression of an increase in the size of the vehicular lamp.

(Embodiment 2)
Hereinafter, although the vehicle lamp 1 which concerns on Embodiment 2 is demonstrated, the code | symbol same about the structure same as Embodiment 1 is attached | subjected, and the description and illustration are abbreviate | omitted suitably. FIG. 4 is an enlarged view of the first lamp unit in the vehicular lamp according to the second embodiment.

  As shown in FIG. 4, the first protrusion 22 of the first lamp unit 20 has a fourth light source mounting portion 22 b at a position shifted from the focal point F <b> 1 of the first reflector 24. In this embodiment, the 4th light source mounting part 22b is located in the lamp front side rather than the 1st light source mounting part 22a. The fourth light source module 28 is mounted on the fourth light source mounting portion 22b. The fourth light source module 28 has the same configuration as the second light source module 46, and includes a fourth light source 28a and a substrate 28b.

  In the present embodiment, the second lamp unit 40 turns on the second light source 46a to form a TSL, and turns on the third light source 48a to form a DRL together with the first lamp unit 20. The first lamp unit 20 turns on the first light source 26a to form a DRL, and turns on the fourth light source 28a to form the TSL together with the second lamp unit 40. When the first lamp unit 20 constitutes a TSL, the first lamp unit 20 functions as an auxiliary lamp whose main role is to increase the light emission area of the TSL.

  Therefore, in the vehicular lamp 1 of the present embodiment, the first lamp unit 20 and the second lamp unit 40 constitute a TSL. Therefore, when the vehicular lamp 1 lights up TSL, a line-shaped light emitting portion that extends widely in the vehicle width direction of the vehicular lamp 1 is formed. When the second lamp unit 40 is turned on together with the first lamp unit 20 when the TSL is turned on, the light emission area of the TSL is increased, and the viewing angle of the TSL and the illuminance of the TSL light distribution pattern are increased. Therefore, the labeling function of TSL can be enhanced.

  As described above, in the vehicular lamp 1 according to the present embodiment, the first lamp unit 20 constituting the first marker lamp is also used as the lamp unit for the second marker lamp, and the second marker lamp is constructed. The two lamp unit 40 is also used as a lamp unit for the first marker lamp. Thereby, the light emission area of a 1st marker lamp and a 2nd marker lamp can be increased, suppressing the enlargement of the vehicle lamp 1. FIG.

  The present invention is not limited to the above-described embodiments, and various modifications such as design changes can be added based on the knowledge of those skilled in the art, and the embodiments to which such modifications are added are also described in the present invention. It is included in the scope of the invention. A new embodiment in which a modification is added to the above-described embodiment has the effects of the combined embodiment and the modification. Examples of the first and second embodiments described above include the following modifications.

(Modification)
FIG. 5 is an enlarged view of a second lamp unit in a vehicular lamp according to a modification. As shown in FIG. 5, the second lamp unit 40 is a so-called direct lens type lamp unit, and includes a projection lens 50 as a second optical member in place of the second reflector 44. The second light source module 46 and the third light source module 48 are fixed to the main surface of the bracket 6 facing the lamp front side so that the light emitting surfaces of the second light source 46a and the third light source 48a face the lamp front side. ing. That is, the bracket 6 has a second light source mounting part and a third light source mounting part. The second light source 46a is disposed at a position overlapping the focal point F2 of the projection lens 50, and the third light source 48a is disposed at a position shifted from the focal point F2. In the vehicular lamp 1 according to the second embodiment, the first lamp unit 20 may be a direct lens type lamp unit.

(Other variations)
In the vehicle lamp 1 according to the first and second embodiments described above, the first marker lamp is DRL and the second marker lamp is TSL. However, the first marker lamp may be TSL and the second marker lamp may be DRL. . In this case, the first light source 26a and the third light source 48a are amber LEDs, and the second light source 46a and the fourth light source 28a are white LEDs. Also, CLL may be used instead of DRL. Further, one of the first marker lamp and the second marker lamp may be a rear turn signal lamp and the other a tail lamp. The arrangement of the first lamp unit 20 and the second lamp unit 40 can be changed as appropriate. For example, the first lamp unit 20 is arranged on the inner side in the vehicle width direction, and the second lamp unit 40 is arranged on the outer side in the vehicle width direction. May be. The number of the 1st lamp unit 20 and the 2nd lamp unit 40 can be suitably changed in consideration of the illumination intensity etc. which are requested | required of the light distribution pattern to form.

  The first light source 26a, the second light source 46a, the third light source 48a, the fourth light source 28a, and the headlamp light source 70a may be light sources other than LEDs, such as incandescent lamps and discharge lamps. Radiation fins for radiating the heat generated by the light source are provided on the main surface of the bracket 6 facing the lamp rear side, the surface opposite to the side where the light source of the first to fourth light source mounting portions is provided, and the like. May be.

  DESCRIPTION OF SYMBOLS 1 Vehicle lamp, 20 1st lamp unit, 22a 1st light source mounting part, 22b 4th light source mounting part, 24 1st reflector, 26a 1st light source, 28a 4th light source, 40 2nd lamp unit, 42a 2nd light source Mounting part, 42b Third light source mounting part, 44 Second reflector, 46a Second light source, 48a Third light source F1, F2, F3, F4 Focus.

Claims (3)

The positional relationship between the first light source mounting unit and the first light source mounting unit is determined so that the focal point overlaps the first light source mounted on the first light source mounting unit, and the traveling direction of the irradiation light of the first light source is changed. A first lamp unit having a first optical member,
The focal point overlaps the second light source mounting unit and the third light source mounting unit, and the second light source mounted on the second light source mounting unit, and the focal point shifts with respect to the third light source mounted on the third light source mounting unit. A second lamp unit having a second optical member that has a positional relationship with the second light source mounting part and the third light source mounting part and that changes the traveling direction of irradiation light of the second light source and the third light source; ,
With
The first lamp unit constitutes a first marker lamp,
The second lamp unit illuminates a second light source to constitute a second marker lamp or a headlamp, and illuminates a third light source to constitute the first marker lamp together with the first lamp unit. A vehicular lamp. The second lamp unit turns on the second light source to form a second indicator lamp;
The first lamp unit has a fourth light source mounting portion at a position deviated from the focal point of the first optical member. The fourth light source mounted on the fourth light source mounting portion is lit to turn on the second light source unit together with the second lamp unit. The vehicular lamp according to claim 1, which constitutes a marker lamp. The first marker lamp is a daytime running lamp or a clearance lamp,
The vehicular lamp according to claim 1, wherein the second marker lamp is a turn signal lamp.

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