JP2017010876A - Front combination lamp for vehicles - Google Patents

Abstract

An object of the present invention is to improve the contrast between lighting and non-lighting of a lamp unit (particularly, a DRL unit) by efficiently blocking outside light (sunlight) without blocking light emitted from a light source. It is to provide a front combination lamp. In order to suppress the influence of sunlight, a DRL unit 20 is arranged at the forefront of a combination lamp for a vehicle, and when the combination lamp is mounted on a vehicle, a bumper 60 on the vehicle side blocks the sunlight and the DRL The configuration is such that it does not reach the unit 20. Further, in order to suppress the influence of external light from the front of the DRL unit 20, the extension 50 is subjected to a non-reflective treatment, and the extension 50 is passed through the outer lens 3, the inner lens 40, and the specular reflection surfaces 31a and 33a of the reflector 30. The external light from the front of the DRL unit 20 that has reached the position is prevented from being reflected by the extension 50. [Selection] Figure 9

Description

  The present invention relates to a vehicle front combination lamp, and more particularly to a vehicle front combination lamp in which a plurality of lamp units each having a different function are integrally incorporated in one lamp chamber.

  Conventionally, this type of combination lamp is disclosed in Patent Document 1 under the name of “vehicle lamp”.

  As shown in FIG. 10, the disclosed vehicular lamp 80 has a configuration in which a plurality of low beam lamp units 81 responsible for passing light distribution and a high beam lamp unit 82 responsible for traveling light distribution are covered with an outer lens 83. Have.

  Among them, the high beam lamp unit 82 is provided with a louver 85 between the extension 84 and the outer lens 83 as shown in FIG. 11, and the louver 85 blocks the incidence of external light (particularly sunlight). Thus, the external light reflected by the reflecting surface 86 of the high beam lamp unit 82 is suppressed from conspicuously making the high beam lamp unit 82 stand out with respect to the low beam lamp unit 81.

JP 2008-97928 A

  By the way, the louver 86 that constitutes the high beam lamp unit 82 functions effectively for shielding external light, but at the same time, it partially blocks the light emitted from the light source, thereby improving the light utilization efficiency. not good.

  Therefore, the present invention was devised in view of the above-mentioned problems, and the object of the present invention is to provide a lamp unit (not shown) by efficiently blocking outside light (sunlight) without blocking light emitted from the light source. In particular, an object of the present invention is to provide a front combination lamp for a vehicle in which the contrast between the lighting and non-lighting of the DRL unit is increased.

  In order to solve the above-described problem, the invention described in claim 1 of the present invention is a vehicle front combination lamp in which a plurality of lamp units are accommodated in a lamp chamber, and at least of the plurality of lamp units. One is a DRL unit, and the DRL unit includes a light source, a reflector having a light reflecting surface that reflects light emitted from the light source in a forward direction, and an unnecessary portion in the lamp chamber that is positioned around the front side of the reflector. The DRL unit is positioned at the forefront of the vehicle front combination lamp, and when the vehicle front combination lamp is mounted on the vehicle, sunlight is blocked by a vehicle-side bumper. To prevent reflection of sunlight on the light reflecting surface.

  Also, in the invention described in claim 2 of the present invention, in claim 1, the extension is irradiated from the front of the DRL unit toward the DRL unit, with the surface on the reflector side being a non-light reflecting surface. External light that reaches the non-light reflecting surface of the extension via the light reflecting surface of the reflector is prevented from being reflected on the light reflecting surface by the non-light reflecting surface.

  According to a third aspect of the present invention, in any one of the first or second aspect, a positioning lamp unit is located on the rear upper side of the DRL lamp, and the positioning lamp unit is a light source. A light guide rod, a flat plate-like light reflecting member extending forward along the light guide rod from below the light guide rod, and forward along the light guide rod from above the light guide rod, An inner lens extending in a plate shape so as to face the light reflecting member, and light emitted from the light source and incident on the light guide rod is guided through the light guide rod, and the inner light is transmitted from the light guide rod. The light emitted toward the lens is emitted outside the positioning lamp unit through the inner lens, and the light emitted from the light guide rod toward the light reflecting member is reflected by the light reflecting member, and the reflected light is reflected on the inner lens. Is characterized in that the emitted outside positioning the lamp unit through.

  According to the present invention, the light source, the reflector having the specular reflection surface that reflects the light emitted from the light source toward the front side of the vehicle, and the light reflected by the reflector that is positioned on the front side of the reflector are directed directly toward the front side of the vehicle. In a DRL unit having a transparent inner lens, the DRL unit is disposed in the foremost part in the lamp chamber of the vehicle front combination lamp, and the extension disposed around the inner lens is non-reflective. did.

  Thereby, when the vehicle front combination lamp combination lamp is mounted on the vehicle, the bumper on the vehicle side does not block sunlight and reach the specular reflection surface of the reflector. Further, the light that reaches the extension from the front through the specular reflection surface of the reflector is not reflected by the extension.

  Therefore, the reflection of sunlight and external light on the mirror reflection surface of the reflector is prevented, and pedestrians can also be used during daytime driving due to clear light emitted from the DRL unit and having good contrast between lighting and non-lighting. And good visibility from an oncoming vehicle or the like can be ensured.

It is a perspective explanatory view of the vehicle front combination lamp of the embodiment. It is AA cross-section explanatory drawing of FIG. It is BB sectional explanatory drawing of FIG. It is a partial perspective explanatory view of a light guide bar. Similarly, it is a partial perspective explanatory view of a light guide rod. It is an optical path explanatory drawing. Similarly, it is an optical path explanatory diagram. It is arrangement | positioning explanatory drawing of a lamp unit. It is explanatory drawing of the DRL unit with respect to sunlight and external light. It is explanatory drawing of a prior art example. Similarly, it is explanatory drawing of a prior art example.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 9 (the same reference numerals are given to the same portions). The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. Unless stated to the effect, the present invention is not limited to these embodiments.

  FIG. 1 is a perspective explanatory view of a vehicle front combination lamp (hereinafter abbreviated as “combination lamp”) according to an embodiment of the present invention, FIG. 2 is an AA cross-sectional explanatory view of FIG. 1, and FIG. It is BB cross-section explanatory drawing.

  The combination lamp 1 according to the embodiment has a shape inclined (slant) from the upper side to the lower side from the rear side to the front side of the vehicle when mounted on the vehicle, and is formed by the housing 2 and the outer lens 3. A reflector type traveling beam lamp in which a projector type passing beam lamp unit 5 for forming a passing beam light distribution pattern is located outside the lamp chamber 4 and in which a traveling beam light distribution pattern is formed. Unit 6 is located.

  Further, a positioning lamp unit 10 is positioned on the lower front side of the low beam lamp unit 5 and the traveling beam lamp unit 6, and a DRL (daytime running lamp) unit 20 is positioned on the lower front side thereof.

  Among them, the positioning lamp unit 10 has a configuration shown in FIG.

  Specifically, a light source (not shown), a light guide rod 11 that guides light emitted from the light source, a first light reflecting member 13 that reflects light emitted from the light guide rod 11, and a second light reflection. A member 14 and an inner lens 16 that is positioned above the second light reflecting member 14 and controls diffusion of the light reflected by the second light reflecting member 14 toward the front of the vehicle are provided.

  The light source is composed of a semiconductor light emitting device (for example, LED), and is disposed in the vicinity of one end surface of the light guide bar 11 or in the vicinity of both end surfaces.

  The light guide rod 11 has a shape that is curved in a convex shape on the front side and extends to the left and right, and an internal reflection surface (total reflection surface) provided on a part of the outer peripheral surface extends in a direction extending in the curved direction. A light reflecting portion 11a extending along the extending direction is provided on the opposite side of the light reflecting portion 11a along the extending direction. Specifically, the light reflecting portion 11a of the light guide rod 11 is composed of, for example, an internal reflection surface in which triangular irregularities 11c extending perpendicularly to the extending direction of the light guiding rod 11 are continuously arranged in the extending direction. (Refer to FIG. 4 (partial perspective view of the light guide bar)).

  However, the light reflecting portion 11a is not limited to the above shape, and is appropriately set based on required optical specifications. For example, as shown in FIG. 5 (partial perspective view of the light guide rod), the light reflecting portion 11a may be configured as a flat surface.

  Returning to FIG. 2, each of the first light reflecting member 13 and the second light reflecting member 14 is formed of a white resin having a high light reflectance, and the first light reflecting member 13 is the light guide rod 11. A curved light reflecting portion 13a positioned in a curved shape along the light reflecting portion 11a and an extending portion 13b extending downward along the lower end portion from the lower end portion of the curved light reflecting portion 13a are provided behind the light reflecting portion 11a. On the other hand, the second light reflecting member 14 includes a plate-like light reflecting portion 14 a extending in a plate shape forward along the light guide rod 11 from below the light guide rod 11, and To the light guide rod 11 and has an extension 14b extending downward.

  The inner lens 16 is a plate-like light emitting portion that extends in a plate shape so as to face the plate-like light reflecting portion 14 a of the second light reflecting member 14 from above the light guide rod 11 and forward along the light guide rod 11. 16a and a bent light that is bent along the tip from the tip of the plate-like light emitting portion 16a and extends to the vicinity of the plate-like light reflector 14a of the second light reflecting member 14 below. It has the output part 16b.

  The inner lens 16 having the plate-like light emitting portion 16a and the bent light emitting portion 16b is provided with light diffusion control means (for example, embossing) 16c on both surfaces or any one surface.

  Therefore, the light guide rod 11 includes the curved light reflecting portion 13a of the first light reflecting member 13, the plate-like light reflecting portion 14a of the second light reflecting member 14, the plate-like light emitting portion 16a, and the bent light emitting portion. It is accommodated in a space defined by the inner lens 16 having 16b.

  Therefore (see FIG. 6 (optical path explanatory diagram)), the light emitted from the light source disposed in the vicinity of one end face or both end faces of the light guide bar 11 and incident in the light guide bar 11 is transmitted to the light reflecting portion 11a. A part of the reflected light internally reflected by the light reflecting part 11a is guided to the other end surface side while repeating internal reflection (total reflection) with the light emitting reflecting part 11b. 11b.

  The light emitted from the light emitting / reflecting part 11b of the light guide rod 11 is partly directed to the bent light emitting part 16b of the inner lens 16, and partly directed to the plate-like light emitting surface 16a of the inner lens 16, A part is directed to the plate-like light reflecting portion 14 a of the second light reflecting member 14.

  Among them, the light L1 emitted from the light emitting / reflecting part 11b of the light guide rod 11 toward the bent light emitting part 16b of the inner lens 16 is transmitted by the diffusion control means 16c applied to the bent light emitting part 16b. It becomes suitable diffused light and is emitted toward the front.

  The light L2 emitted from the light emitting / reflecting part 11b of the light guide rod 11 toward the plate-like light emitting part 16a of the inner lens 16 is transmitted to the plate-like light emitting part 16a in the same manner as the bent light emitting part 16b. By the applied diffusion control means 16c, appropriate diffused light is emitted forward.

  Further, the light L3 emitted from the light emitting / reflecting part 11b of the light guide rod 11 toward the plate-like light reflecting part 14a of the second light reflecting member 14 is reflected by the plate-like light reflecting part 14a, and the reflected light is reflected by the light L3. Facing the plate-like light reflecting portion 14a toward the plate-like light emitting portion 16a of the inner lens 16, the diffusion control means 16c applied to the plate-like light emitting portion 16a emits appropriate diffused light toward the front. Is done.

  In addition, the light that reaches the light reflecting portion 11a while being guided through the light guide rod 11 is internally reflected by the light reflecting portion 11a and returned to the light guide rod 11, and light emitted from the light reflecting portion 11a. And exist. In this case, the light L4 emitted from the light reflecting portion 11a is reflected by the curved light reflecting portion 13a of the first light reflecting member 13 facing the light reflecting portion 11a, and again from the light reflecting portion 11a to the light guide rod 11. And is guided through the light guide rod 11 and is emitted from the light exit reflection surface 11b.

  Therefore, the light emitted from the light source and entering the light guide rod 11 is efficiently emitted from the light emitting reflection surface 11b, and most of the light contributes as the emitted light from the inner lens 16. As a result, the positioning lamp unit 10 having the above configuration is a bright lamp unit with high use efficiency of light emitted from the light source.

  The DRL unit 20 has the configuration shown in FIG.

  Specifically, the light source 21, the reflector 30 that mounts the light source 21 and reflects the emitted light from the light source 21 and controls the distribution of the reflected light in a predetermined direction in the front of the vehicle, and the front side of the reflector 30 are specifically located. The inner lens 40 that emits the light reflected by the reflector 30 as it is in the forward direction of the vehicle and the extension 50 that is disposed around the inner lens 40 are provided.

  The light source 21 includes a semiconductor light emitting device (for example, LED) and is mounted on the substrate 22.

  The reflector 30 includes two curved portions 31 and 33 that are convex on the rear side and are continuously connected in the vertical direction, and an extension portion 32 that extends from the upper edge of the upper curved portion 31 to the front side and a lower curved portion 33. The cross section having the extended portion 34 extending from the lower edge to the front side has a shape that extends in a curved manner convex toward the front side.

  The inner lens 40 has a transparent translucent portion 41 extending vertically, a leg portion 42 extending rearward from the upper edge of the translucent portion 41, and a leg portion 43 extending rearward from the lower edge of the translucent portion 41. It has a shape that curves and extends in a convex shape on the front side.

  The extension 50 has at least a back surface (surface on the reflector 30 side) 50a as a non-light reflecting surface. The non-light reflecting surface is formed by extending the extension 50 itself with a non-reflective black resin, or by applying a non-reflective treatment by black coating or the like to the back surface 50a so as to surround the inner lens 40 in a substantially vertical direction. And it extends in the substantially left-right direction.

  Inner surfaces (surfaces facing the inner lens 40) 31a and 33a of the curved portions 31 and 33 of the reflector 30 are mirror-reflecting surfaces by aluminum vapor deposition or the like, and the inner surface 31a of the curved portion 31 is the upper edge of the curved portion 31. The inner surface 33a of the bending portion 33 extends from the upper edge of the bending portion 33. Similarly, the inner surface 33a of the bending portion 33 extends from the upper edge of the bending portion 33. It is composed of a surface that approximates a paraboloid with the position of the light source 21b mounted on 34 as the focal position.

  Accordingly (see FIG. 7 (optical path explanatory diagram)), the light L5 emitted from the light source 21a toward the inner surface 31a of the curved portion 31 of the reflector 30 is an approximate parabolic reflecting surface of the inner surface 31a, and the two curves of the reflector 30 are. With respect to the central axis X extending forward along the horizontal plane through the portion where the portions 31 and 33 are connected, the light is reflected downwardly toward the light transmitting portion 41 of the inner lens 40, and the curved portion 33 of the reflector 30 from the light source 21 b. The light L6 emitted toward the inner surface 33a of the inner surface 33a is reflected by the approximate parabolic reflection surface of the inner surface 33a from the upper side to the lower side with respect to the central axis X and travels toward the translucent portion 41 of the inner lens 40.

  The lights L5 and L6 that have reached the light transmitting portion 41 of the inner lens 40 are transmitted through the transparent light transmitting portion 41 as they are and emitted forward as light having appropriate light distribution characteristics.

  By the way, the DRL unit 20 having the above-described structure is lit while the surroundings are bright in order to improve the visibility of the vehicle running in the daytime. Therefore, it may be affected by external light that is not during night driving.

  Specifically, the direct sunlight reaches the inner surfaces (specular reflection surfaces) 31a and 33a of the curved portions 31 and 33 of the reflector 30 through the outer lens 3 and the inner lens 40, and is reflected by the specular reflection surfaces 31a and 33a. The irradiated light is irradiated forward through the inner lens 40 and the outer lens 3. Therefore, when the DRL unit 20 is viewed from the front, the viewer views the sunlight reflected on the specular reflection surfaces 31 a and 33 a of the reflector 30 through the inner lens 40 and the outer lens 3.

  Further, light (external light) irradiated on the DRL unit 20 from the front reaches the specular reflection surfaces 31a and 33a of the reflector 30 through the outer lens 3 and the inner lens 40, is reflected by the specular reflection surfaces 31a and 33a, and is extended 50. To reach. At this time, when the extension 50 has a general specular reflection surface, the light reflected by the extension 50 follows the reverse optical path of the specular reflection surfaces 31a and 33a, the inner lens 40 and the outer lens 3 and moves forward. Is irradiated.

  Therefore, when the DRL unit 20 is viewed from the front, the viewer sees the light from the front reflected by the extension 50 and reflected on the specular reflection surfaces 31 a and 33 a of the reflector 30 through the inner lens 40 and the outer lens 3. Be seen.

  Therefore, when the DRL unit 20 is viewed from the front, the viewer can see the light from the light source of the DRL unit 20, the sunlight reflected on the specular reflection surfaces 31a and 33a of the reflector 30, and the specular reflection of the reflector 30 as well. External light from the front reflected on the surfaces 31a and 33a is superimposed and viewed.

  Therefore, when the DRL unit 20 is viewed from the front, the original emitted light of the DRL unit 20 is masked by the external light, and the contrast between lighting and non-lighting becomes poor.

  The present invention takes measures to obtain a good contrast when the DRL unit 20 is lit and when it is not lit.

  First, in order to suppress the influence of sunlight, as shown in FIG. 8 (description of arrangement of the lamp unit), the arrangement position of the lamp unit accommodated in the lamp chamber 4 of the combination lamp 1 is changed to the lamp unit for passing beam. 5 and the traveling beam lamp unit 6 are arranged on the rear side, the positioning lamp unit 10 is located on the lower front side, and the DRL unit 20 is arranged on the lower front side (frontmost part).

  Therefore, as shown in FIG. 9 (an explanatory diagram for sunlight / external light), when the combination lamp 1 is mounted on the vehicle, the bumper 60 on the vehicle side blocks the sunlight and the combination lamp (in particular, the curved portion 31 of the reflector 30). , 33 so as not to reach the respective specular reflecting surfaces 31a, 33a).

  In order to suppress the influence of external light from the front of the DRL unit 20, the back surface 50 a of the extension 50 is a non-light reflecting surface, and the outer lens 3, the inner lens 40, and the curved portions 31 and 33 of the reflector 30 are respectively External light from the front of the DRL unit 20 that reaches the back surface 50a of the extension 50 via the specular reflection surfaces 31a and 33a is prevented from being reflected by the extension 50.

  Thereby, the reflection of sunlight and external light on the respective specular reflection surfaces 31a and 33a of the curved portions 31 and 33 of the reflector 30 is prevented, and the clear light emitted from the DRL unit 20 can also be used during daytime driving. Good visibility from pedestrians and oncoming vehicles can be ensured.

DESCRIPTION OF SYMBOLS 1 ... Front combination lamp 2 ... Housing 3 ... Outer lens 4 ... Light chamber 5 ... Passing beam lamp unit 6 ... Traveling beam lamp unit 10 ... Positioning lamp unit 11 ... Light guide bar 11a ... Light reflection part 11b ... Light emission reflection Part 11c ... Triangular unevenness 13 ... First light reflecting member 13a ... Curved light reflecting part 13b ... Extension part 14 ... Second light reflecting member 14a ... Plate-like light reflecting part 14b ... Extension part 16 ... Inner lens 16a ... Plate-like light emission Part 16b ... Bent light emitting part 16c ... Diffusion control means 20 ... DRL unit 21 ... Light source 21a ... Light source 21b ... Light source 22 ... Substrate 30 ... Reflector 31 ... Bending part 31a ... Inner surface 32 ... Extension part 33 ... Bending part 33a ... Inner surface 34 ... Extension 40 ... Inner lens 41 ... Translucent part 42 ... Leg 43 ... Leg 50 ... extension
60 ... Bumper

Claims (3)

A vehicle front combination lamp in which a plurality of lamp units are accommodated in a lamp chamber,
At least one of the plurality of lamp units is a DRL unit,
The DRL unit includes a light source, a reflector having a light reflecting surface that reflects light emitted from the light source in a forward direction, and an extension that is positioned around the front side of the reflector and shields unnecessary portions in the lamp chamber. ,
The DRL unit is positioned at the forefront of the vehicle front combination lamp, and when the vehicle front combination lamp is mounted on the vehicle, sunlight is blocked by a vehicle-side bumper, so that the light reflecting surface A front combination lamp for vehicles that prevents the reflection of sunlight.   The extension has a surface on the reflector side as a non-light reflecting surface, and is irradiated from the front of the DRL unit toward the DRL unit and reaches the non-light reflecting surface of the extension through the light reflecting surface of the reflector. The front combination lamp for a vehicle according to claim 1, wherein light is prevented from being reflected on the light reflecting surface by the non-light reflecting surface. A positioning lamp unit is located on the upper rear side of the DRL lamp;
The positioning lamp unit includes a light source, a light guide rod, a flat light reflecting member extending forward along the light guide rod from below the light guide rod, and the light guide rod from above the light guide rod. And an inner lens extending in a plate shape so as to face the light reflecting member,
Light emitted from the light source and incident on the light guide rod is guided through the light guide rod, and light emitted from the light guide rod toward the inner lens is emitted outside the positioning lamp unit through the inner lens. The light emitted from the light guide rod toward the light reflecting member is reflected by the light reflecting member, and the reflected light is emitted outside the positioning lamp unit through the inner lens. The vehicle front combination lamp according to claim 2.

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