JP7024424B2

JP7024424B2 - Vehicle lighting

Info

Publication number: JP7024424B2
Application number: JP2018005388A
Authority: JP
Inventors: 孝志武藤
Original assignee: Ichikoh Industries Ltd
Current assignee: Ichikoh Industries Ltd
Priority date: 2018-01-17
Filing date: 2018-01-17
Publication date: 2022-02-24
Anticipated expiration: 2038-01-17
Also published as: JP2019125497A

Description

本発明は車両用灯具に関するものである。 The present invention relates to a vehicle lamp.

特許文献１には、発光チップを有する第１光源と、発光チップを有する第２光源と、第１光源及び第２光源を配置するベース部と、ベース部を冷却するファン（以下、冷却ファンともいう。）と、を備えた車両用灯具が開示されている。 Patent Document 1 describes a first light source having a light emitting chip, a second light source having a light emitting chip, a base portion in which the first light source and the second light source are arranged, and a fan for cooling the base portion (hereinafter, also referred to as a cooling fan). A vehicle lighting device equipped with the above is disclosed.

より具体的には、特許文献１の車両用灯具は、ベース部が、水平面状に形成された上壁部と、上壁部の前端から斜め下前方へ向けて延びる傾斜壁部と、上壁部及び傾斜壁部の下面から下方向へ延びる放熱フィンと、を有し、上壁部に第１光源が設けられ、傾斜壁部に第２光源が設けられ、放熱フィンの下側に放熱フィンに向けて風を送り込むように吹き出し口を真上に向け冷却ファンが配置されている。 More specifically, in the vehicle lighting equipment of Patent Document 1, the base portion has an upper wall portion formed in a horizontal plane, an inclined wall portion extending diagonally downward and forward from the front end of the upper wall portion, and an upper wall. It has a heat radiation fin extending downward from the lower surface of the portion and the inclined wall portion, a first light source is provided on the upper wall portion, a second light source is provided on the inclined wall portion, and a heat radiation fin is provided below the heat radiation fin. A cooling fan is arranged with the outlet facing straight up so as to send wind toward.

国際公開第２０１７／１０４６７８号International Publication No. 2017/104678

ところで、発光チップを有する半導体型の光源の場合、発光チップの発熱を効率よく冷却することが発光効率及び劣化抑制のために重要であり、近年の半導体型の光源のハイパワー化に伴って、今後、より一層、冷却効率の向上が求められるものと思われる。 By the way, in the case of a semiconductor-type light source having a light-emitting chip, it is important to efficiently cool the heat generated by the light-emitting chip in order to achieve luminous efficiency and suppress deterioration. In the future, it is expected that further improvement in cooling efficiency will be required.

そして、例えば、ロービーム用の光源とハイビーム用の光源は、ベース部の異なる位置に配置されることになるため、そのように異なる位置に設けられる複数の光源を有する車両用灯具において、それらの光源を冷却ファンで、これまで以上に効率よく冷却できることが望まれる。 Then, for example, since the light source for the low beam and the light source for the high beam are arranged at different positions of the base portion, those light sources are used in a vehicle lamp having a plurality of light sources provided at such different positions. It is hoped that the cooling fan can cool the lamp more efficiently than ever before.

本発明は、このような事情に鑑みてなされたものであり、異なる位置に配置される複数の光源を冷却ファンで効率よく冷却することができる車両用灯具を提供することを目的とする。 The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vehicle lamp capable of efficiently cooling a plurality of light sources arranged at different positions with a cooling fan.

本発明は、上記目的を達成するために以下の構成によって把握される。
（１）本発明の車両用灯具は、ベース部を有するヒートシンクと、前記ベース部上に配置され、第１発光チップを有する第１光源と、前記ベース部上に配置され、第２発光チップを有する第２光源と、前記ヒートシンクを冷却する冷却ファンと、を備え、前記ベース部は、前記第１光源を配置する水平部と、前記水平部の前方側から前方斜め下側に延在し、前記第２光源を配置する傾斜部と、を備え、前記冷却ファンは、側面視で見て、前記冷却ファンの回転軸の延長線が前記第１発光チップを通る鉛直線に対して所定の角度以上傾けて配置され、風を吹き出す吹出し面が前方斜め上側に傾斜している。 The present invention is grasped by the following configurations in order to achieve the above object.
(1) The vehicle lamp of the present invention has a heat sink having a base portion, a first light source arranged on the base portion and having a first light emitting chip, and a second light emitting chip arranged on the base portion. A second light source having a second light source and a cooling fan for cooling the heat sink are provided, and the base portion extends from the front side of the horizontal portion to the diagonally lower front side of the horizontal portion in which the first light source is arranged. The cooling fan includes an inclined portion for arranging the second light source, and the cooling fan has a predetermined angle with respect to a vertical line through which the extension line of the rotation axis of the cooling fan passes through the first light emitting chip when viewed from the side. It is arranged at an angle as described above, and the blowout surface that blows out the wind is inclined forward and diagonally upward.

（２）上記（１）の構成において、前記所定の角度は、基準角度の１／６以上、５／６以下であり、前記基準角度が、側面視で見て、前記第２光源の配置される前記傾斜部の載置面に対して直交する直交線の前記鉛直線に対する角度である。 (2) In the configuration of (1) above, the predetermined angle is 1/6 or more and 5/6 or less of the reference angle, and the reference angle is arranged as the second light source when viewed from the side. It is an angle of an orthogonal line orthogonal to the mounting surface of the inclined portion with respect to the vertical straight line.

（３）上記（１）又は（２）の構成において、前記冷却ファンは、側面視で見て、前記回転軸の延長線が前記第１発光チップと前記第２発光チップの間を通るように配置されている。 (3) In the configuration of the above (1) or (2), the cooling fan is such that the extension line of the rotation axis passes between the first light emitting chip and the second light emitting chip when viewed from the side. Have been placed.

（４）上記（１）から（３）のいずれか１つの構成において、前記ヒートシンクは、前記水平部の裏面と前記傾斜部の裏面を繋ぐ肉厚部を備え、前記肉厚部は、側面視で見て、前記第１発光チップの第１発光中心、又は、前記第２発光チップの第２発光中心から垂線を引くことが可能な表面を有している。 (4) In any one of the above configurations (1) to (3), the heat sink includes a thick portion connecting the back surface of the horizontal portion and the back surface of the inclined portion, and the thick portion is viewed from the side. It has a surface capable of drawing a perpendicular line from the first light emitting center of the first light emitting chip or the second light emitting center of the second light emitting chip.

（５）上記（４）の構成において、前記肉厚部は、側面視で見て、前記第１発光中心及び前記第２発光中心の両方から垂線を引くことが可能な前記表面を有している。 (5) In the configuration of the above (4), the thick portion has the surface capable of drawing a perpendicular line from both the first light emitting center and the second light emitting center when viewed from the side. There is.

（６）上記（４）又は（５）の構成において、前記肉厚部は、側面視で見て、前記表面に対する前記第２発光中心からの垂線が前記表面に対する前記第１発光中心からの垂線よりも長い前記表面を有している。 (6) In the configuration of the above (4) or (5), when viewed from the side, the thick portion has a perpendicular line from the second light emitting center to the surface and a perpendicular line from the first light emitting center to the surface. Has the surface longer than.

（７）上記（４）から（６）のいずれか１つの構成において、前記肉厚部は、側面視で見て、前記冷却ファンの吹出し面とほぼ平行である前記表面を有している。 (7) In any one of the above (4) to (6) configurations, the thick portion has the surface that is substantially parallel to the outlet surface of the cooling fan when viewed from the side.

（８）上記（４）から（７）のいずれか１つの構成において、前記第２光源は、水平方向に並ぶ複数の前記第２発光チップを有しており、前記肉厚部は、水平方向の水平幅が前記第２発光チップのチップ列の幅以上である。 (8) In any one of the configurations (4) to (7), the second light source has a plurality of the second light emitting chips arranged in the horizontal direction, and the thick portion is in the horizontal direction. The horizontal width of is equal to or greater than the width of the chip row of the second light emitting chip.

（９）上記（８）の構成において、前記肉厚部の水平幅が水平方向の前記水平部の幅及び水平方向の前記傾斜部の幅よりも小さく、前記ヒートシンクは、前記肉厚部が存在しない前記水平部の裏面及び前記傾斜部の裏面に設けられ、側面視で見て、前記回転軸の延長線にほぼ直交する方向に並ぶ複数の放熱フィンを備え、前記放熱フィンは、側面視で見て、前記冷却ファンに向かって前記肉厚部の表面を超えて延在している。 (9) In the configuration of the above (8), the horizontal width of the thick portion is smaller than the width of the horizontal portion in the horizontal direction and the width of the inclined portion in the horizontal direction, and the heat sink has the thick portion. Not provided on the back surface of the horizontal portion and the back surface of the inclined portion, and provided with a plurality of heat radiation fins arranged in a direction substantially orthogonal to the extension line of the rotation axis when viewed from the side, the heat radiation fins are provided from the side view. As seen, it extends beyond the surface of the thick portion towards the cooling fan.

（１０）上記（９）の構成において、前記放熱フィンが、前記肉厚部上にも延在している。 (10) In the configuration of (9) above, the heat radiation fin extends on the thick portion.

本発明によれば、異なる位置に配置される複数の光源を冷却ファンで効率よく冷却することができる車両用灯具を提供することができる。 According to the present invention, it is possible to provide a vehicle lamp that can efficiently cool a plurality of light sources arranged at different positions with a cooling fan.

本発明に係る実施形態の車両用灯具を備えた車両の平面図である。It is a top view of the vehicle provided with the vehicle lighting fixture of the embodiment which concerns on this invention. 本発明に係る実施形態の灯具ユニットの断面図である。It is sectional drawing of the lamp unit of embodiment which concerns on this invention. 本発明に係る実施形態の第２光源の斜視図である。It is a perspective view of the 2nd light source of embodiment which concerns on this invention. 本発明に係る実施形態の冷却効率を高めるための構成を説明するための図である。It is a figure for demonstrating the structure for increasing the cooling efficiency of the embodiment which concerns on this invention. 本発明に係る実施形態の変形例を説明するための図である。It is a figure for demonstrating the modification of embodiment which concerns on this invention.

以下、添付図面を参照して、本発明を実施するための形態（以下、「実施形態」と称する。）について詳細に説明する。
なお、実施形態の説明の全体を通して同じ要素には同じ番号又は符号を付している。 Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the accompanying drawings.
The same elements are designated by the same numbers or reference numerals throughout the description of the embodiments.

また、実施形態及び図中において、特に断りがない場合、「前」、「後」は、各々、車両１０２の「前進方向」、「後進方向」を示し、「上」、「下」、「左」、「右」は、各々、車両１０２に乗車する運転者から見た方向を示す。 Further, in the embodiments and the drawings, unless otherwise specified, "front" and "rear" indicate the "forward direction" and "reverse direction" of the vehicle 102, respectively, and are "up", "down", and "rear", respectively. “Left” and “right” indicate the directions seen from the driver riding in the vehicle 102, respectively.

なお、特に断りがない場合、前後方向は、先に説明した前進後進方向であり、鉛直方向は先に説明した上下方向であり、水平方向は先に説明した左右方向であり、水平方向は車両幅方向という場合もある。 Unless otherwise specified, the front-rear direction is the forward-reverse direction described above, the vertical direction is the vertical direction described above, the horizontal direction is the left-right direction described above, and the horizontal direction is the vehicle. Sometimes referred to as the width direction.

図１は、本発明に係る実施形態の車両用灯具を備えた車両１０２の平面図である。
図１に示すように、本発明に係る実施形態の車両用灯具は、車両１０２の前方の左右のそれぞれに設けられる前照灯（１０１Ｌ、１０１Ｒ）であり、以下では単に車両用灯具と記載する。 FIG. 1 is a plan view of a vehicle 102 provided with a vehicle lamp according to an embodiment of the present invention.
As shown in FIG. 1, the vehicle lighting fixtures of the embodiment according to the present invention are headlights (101L, 101R) provided on the left and right in front of the vehicle 102, respectively, and are simply referred to as vehicle lighting fixtures below. ..

本実施形態の車両用灯具は、車両前方側に開口したハウジング（図示せず）と開口を覆うようにハウジングに取り付けられるアウターレンズ（図示せず）を備え、ハウジングとアウターレンズとで形成される灯室内に灯具ユニット１（図２参照）等が配置されている。 The vehicle lighting fixture of the present embodiment includes a housing (not shown) opened on the front side of the vehicle and an outer lens (not shown) attached to the housing so as to cover the opening, and is formed by the housing and the outer lens. A lamp unit 1 (see FIG. 2) and the like are arranged in the lamp chamber.

図２は灯具ユニット１の断面図であり、図３は、第２光源Ｈの斜視図である。
なお、図２は灯具ユニット１の灯具光軸Ｚに沿った断面図になっている。 FIG. 2 is a cross-sectional view of the lamp unit 1, and FIG. 3 is a perspective view of the second light source H.
Note that FIG. 2 is a cross-sectional view taken along the lamp optical axis Z of the lamp unit 1.

図２に示すように、灯具ユニット１は、ヒートシンク１０と、第１光源Ｌと、リフレクタ２０と、シェード３０と、第２光源Ｈと、反射部材４０と、レンズ５０と、レンズホルダ６０と、冷却ファン７０と、を主に備えている。 As shown in FIG. 2, the lamp unit 1 includes a heat sink 10, a first light source L, a reflector 20, a shade 30, a second light source H, a reflecting member 40, a lens 50, a lens holder 60, and the like. It mainly includes a cooling fan 70.

（ヒートシンク１０）
ヒートシンク１０は、第１光源Ｌ及び第２光源Ｈの発生する熱を効率よく、放熱するために、熱伝導率のよい金属又は樹脂等によって形成され、本実施形態では、ヒートシンク１０の後述する各部が一体成形されたアルミダイカスト製のヒートシンク１０になっている。 (Heat sink 10)
The heat sink 10 is formed of a metal or resin having good thermal conductivity in order to efficiently dissipate the heat generated by the first light source L and the second light source H, and in the present embodiment, each part of the heat sink 10 will be described later. Is an integrally molded aluminum die-cast heat sink 10.

そして、詳細については後ほど改めて説明するが、ヒートシンク１０は、第１光源Ｌ及び第２光源Ｈを配置するベース部１１を有している。
具体的には、ベース部１１は、第１光源Ｌを配置する水平部１１Ａと、水平部１１Ａの前方側（前端部）から前方斜め下側に延在し、第２光源Ｈを配置する傾斜部１１Ｂと、を備え、断面図である図２に示されるように、側面視で見て、ほぼくの字形状になっている。 The heat sink 10 has a base portion 11 for arranging the first light source L and the second light source H, which will be described in detail later.
Specifically, the base portion 11 extends from the front side (front end portion) of the horizontal portion 11A where the first light source L is arranged and diagonally forward and downward, and is inclined to arrange the second light source H. It is provided with a portion 11B, and as shown in FIG. 2, which is a cross-sectional view, has a substantially dogleg shape when viewed from the side.

（第１光源Ｌ）
第１光源Ｌは、ロービーム配光用の光を出射する光源であり、第１基板Ｌ１と、第１基板Ｌ１上に設けられた１つの第１発光チップＬ２と、を備えている。
なお、第１発光チップＬ２の数は１つに限定される必要はなく、複数の第１発光チップＬ２（例えば４チップ）が水平方向に並ぶように第１基板Ｌ１上に設けられたものであってもよい。 (First light source L)
The first light source L is a light source that emits light for low beam light distribution, and includes a first substrate L1 and one first light emitting chip L2 provided on the first substrate L1.
The number of the first light emitting chips L2 is not limited to one, and a plurality of first light emitting chips L2 (for example, four chips) are provided on the first substrate L1 so as to be arranged in the horizontal direction. There may be.

そして、第１光源Ｌは、光を上側に出射するように、ベース部１１の水平部１１Ａ上に設けられた光源載置部１１ＡＡに配置され、光源ホルダ１２によって光源載置部１１ＡＡに取り付けられており、出射した光は、第１光源Ｌ側を向くリフレクタ２０の反射面２１Ａによって、レンズ５０側に反射される。 The first light source L is arranged in the light source mounting portion 11AA provided on the horizontal portion 11A of the base portion 11 so as to emit light upward, and is attached to the light source mounting portion 11AA by the light source holder 12. The emitted light is reflected on the lens 50 side by the reflecting surface 21A of the reflector 20 facing the first light source L side.

なお、本実施形態の第１光源Ｌは、第１発光チップＬ２がＬＥＤチップであるＬＥＤ光源であるが、これに限定される必要はなく、第１光源Ｌは、例えば、第１発光チップＬ２がＬＤチップ（レーザダイオードチップ）であるレーザ光源等であってもよく、第１光源Ｌには、半導体型の光源が好適に用いられる。 The first light source L of the present embodiment is an LED light source in which the first light emitting chip L2 is an LED chip, but the light source L is not limited to this, and the first light source L is, for example, the first light emitting chip L2. May be a laser light source or the like which is an LD chip (laser diode chip), and a semiconductor type light source is preferably used as the first light source L.

（リフレクタ２０）
リフレクタ２０は、図２に示すように、第１光源Ｌからの光をレンズ５０側に反射する反射面２１Ａを有する反射部２１と、反射部２１の下端外周に設けられたフランジ部２２と、を備えている。 (Reflector 20)
As shown in FIG. 2, the reflector 20 includes a reflecting portion 21 having a reflecting surface 21A that reflects light from the first light source L toward the lens 50, a flange portion 22 provided on the outer periphery of the lower end of the reflecting portion 21, and a flange portion 22. It is equipped with.

そして、リフレクタ２０は、前方側を開口した状態として第１光源Ｌ上を半ドーム状に覆うようにベース部１１の水平部１１Ａ上に配置され、フランジ部２２が水平部１１Ａに対してネジ固定される。 The reflector 20 is arranged on the horizontal portion 11A of the base portion 11 so as to cover the first light source L in a semi-dome shape with the front side open, and the flange portion 22 is screwed to the horizontal portion 11A. Will be done.

また、リフレクタ２０は反射面２１Ａが２つの焦点を有する楕円面の一部をなす形状に形成されており、リフレクタ２０は、反射面２１Ａの後方側の焦点である後方焦点が第１光源Ｌの発光中心である第１発光中心（第１発光チップＬ２の第１発光中心）にほぼ一致するとともに、反射面２１Ａの前方側の焦点である前方焦点Ｏが前後方向で見て、後述するシェード３０の遮光部３１と重なる範囲内であって遮光部３１の下側に位置するように、水平部１１Ａ上に配置されている。 Further, the reflector 20 is formed in a shape in which the reflecting surface 21A forms a part of an ellipsoid having two focal points, and the reflector 20 has a rear focal point of the first light source L, which is the focal point on the rear side of the reflecting surface 21A. The shade 30 described later when the front focal point O, which is the focal point on the front side of the reflecting surface 21A, is seen in the front-rear direction while substantially matching the first light emitting center (the first light emitting center of the first light emitting chip L2) which is the light emitting center. It is arranged on the horizontal portion 11A so as to be located below the light-shielding portion 31 within the range overlapping with the light-shielding portion 31 of the above.

（シェード３０）
シェード３０は、後述する第２光源Ｈの第２発光チップＨ２の上側に位置し、リフレクタ２０でレンズ５０側に反射された第１光源Ｌからの光のうち、レンズ５０の下側に向かう光の一部を遮光し、ロービーム配光パターンのカットオフラインを形成するための部材である。
このため、シェード３０は、カットオフラインの形状に合わせた形状に形成された遮光部３１を備えている。 (Shade 30)
The shade 30 is located above the second light emitting chip H2 of the second light source H, which will be described later, and is the light from the first light source L reflected toward the lens 50 by the reflector 20 toward the lower side of the lens 50. It is a member for forming a cut-off line of a low beam light distribution pattern by blocking a part of the light source.
Therefore, the shade 30 includes a light-shielding portion 31 formed in a shape that matches the shape of the cut-off line.

なお、シェード３０は、遮光部３１の左右の端部（つまり、両端部）のそれぞれに一体に設けられ、下側に延在する取付脚部（図示せず）を備えており、その取付脚部（図示せず）がベース部１１の傾斜部１１Ｂに固定される。
このため、その図示しない取付脚部には、傾斜部１１Ｂに設けられた一対の位置決めピン（図示せず）が挿入される位置決め孔（図示せず）と、傾斜部１１Ｂにネジ固定するためのネジ孔（図示せず）と、が形成されており、後述する第２光源Ｈの第２基板Ｈ１及び反射部材４０とともに、傾斜部１１Ｂに対してネジ固定されるようになっている。 The shade 30 is integrally provided at each of the left and right ends (that is, both ends) of the light-shielding portion 31, and includes mounting legs (not shown) extending downward. A portion (not shown) is fixed to the inclined portion 11B of the base portion 11.
Therefore, in the mounting leg portion (not shown), a positioning hole (not shown) into which a pair of positioning pins (not shown) provided in the inclined portion 11B is inserted, and a screw fixing to the inclined portion 11B are performed. A screw hole (not shown) is formed, and the second light source H, which will be described later, is screw-fixed to the inclined portion 11B together with the second substrate H1 and the reflective member 40.

（第２光源Ｈ）
第２光源Ｈは、ハイビーム配光用の光を出射する光源であり、図３に示すように、第２基板Ｈ１と、第２基板Ｈ１上に設けられ、水平方向に並ぶ複数の第２発光チップＨ２と、第２基板Ｈ１の下側に位置するように第２基板Ｈ１上に設けられ、給電配線のコネクタが接続される給電コネクタＨ３と、を備えている。 (Second light source H)
The second light source H is a light source that emits light for high beam light distribution, and as shown in FIG. 3, a plurality of second light sources provided on the second substrate H1 and the second substrate H1 and arranged in the horizontal direction. It includes a chip H2 and a power supply connector H3 provided on the second board H1 so as to be located below the second board H1 and to which a connector of a power supply wiring is connected.

そして、第２光源Ｈは、第２発光チップＨ２の一部又は全部を点消灯させることで、対向車や先行車に対するグレアを抑制するように、ハイビーム配光パターン（以下、ハイビーム付加配光という場合もある。）を変化させる可変ハイビーム（ＡｄａｐｔｉｖｅＤｒｉｖｉｎｇＢｅａｍ）制御を行うことができる光源になっている。 The second light source H is referred to as a high beam light distribution pattern (hereinafter referred to as high beam additional light distribution) so as to suppress glare to an oncoming vehicle or a preceding vehicle by turning off a part or all of the second light emitting chip H2. It is a light source capable of performing variable high beam (Adaptive Driving Beam) control that changes (in some cases).

本実施形態では、第２光源Ｈも、第１光源Ｌと同様に第２発光チップＨ２にＬＥＤチップを用いたＬＥＤ光源である。 In the present embodiment, the second light source H is also an LED light source using the LED chip for the second light emitting chip H2 like the first light source L.

ただし、第１光源Ｌで説明したのと同様に、第２光源Ｈは、第２発光チップＨ２がＬＤチップ（レーザダイオードチップ）であるレーザ光源等であってもよく、第２光源Ｈには、半導体型の光源が好適に用いられる。 However, as described for the first light source L, the second light source H may be a laser light source or the like in which the second light emitting chip H2 is an LD chip (laser diode chip), and the second light source H may be the second light source H. , A semiconductor type light source is preferably used.

なお、第２基板Ｈ１には、ベース部１１の傾斜部１１Ｂに設けられた一対の位置決めピン（図示せず）が挿入される左右一対の位置決め孔ＨＨ１（図３参照）と、傾斜部１１Ｂにネジ固定するための左右一対のネジ孔ＨＨ２（図３参照）と、が形成されており、先に説明したシェード３０及び後ほど説明する反射部材４０とともに、傾斜部１１Ｂに対してネジ固定されるようになっている。 The second substrate H1 has a pair of left and right positioning holes HH1 (see FIG. 3) into which a pair of positioning pins (not shown) provided in the inclined portion 11B of the base portion 11 are inserted, and the inclined portion 11B. A pair of left and right screw holes HH2 (see FIG. 3) for fixing screws are formed so as to be screw-fixed to the inclined portion 11B together with the shade 30 described above and the reflective member 40 described later. It has become.

（反射部材４０）
反射部材４０は、図２に示すように、第２発光チップＨ２よりも下側に配置され、第２発光チップＨ２からの光の一部をレンズ５０の上側に向けて反射する部材であり、第２光源Ｈ（第２発光チップＨ２）からの光をレンズ５０に向けて反射する反射部４１を備えている。 (Reflective member 40)
As shown in FIG. 2, the reflecting member 40 is arranged below the second light emitting chip H2, and is a member that reflects a part of the light from the second light emitting chip H2 toward the upper side of the lens 50. A reflecting unit 41 that reflects light from the second light source H (second light emitting chip H2) toward the lens 50 is provided.

そして、反射部４１でレンズ５０の下側に入射する光をレンズ５０の上側に反射させることで、第２光源Ｈ（第２発光チップＨ２）からの光で形成されるハイビーム付加配光が上方に広がりを有する配光となる。 Then, the light incident on the lower side of the lens 50 is reflected on the upper side of the lens 50 by the reflecting unit 41, so that the high beam additional light distribution formed by the light from the second light source H (second light emitting chip H2) is upward. The light distribution has a wide range.

なお、反射部材４０は、反射部４１の左右に一体に設けられ、ベース部１１の傾斜部１１Ｂに固定するための固定部（図示せず）を備えている。
そして、その図示しない固定部のそれぞれには、傾斜部１１Ｂに設けられた一対の位置決めピン（図示せず）が挿入される位置決め孔（図示せず）と、傾斜部１１Ｂにネジ固定するためのネジ孔（図示せず）と、が形成されており、先に説明したシェード３０及び第２光源Ｈの第２基板Ｈ１とともに、傾斜部１１Ｂに対してネジ固定されるようになっている。 The reflective member 40 is integrally provided on the left and right sides of the reflective portion 41, and includes a fixing portion (not shown) for fixing to the inclined portion 11B of the base portion 11.
Then, in each of the fixing portions (not shown), a positioning hole (not shown) into which a pair of positioning pins (not shown) provided in the inclined portion 11B is inserted, and a screw fixing to the inclined portion 11B are performed. A screw hole (not shown) is formed, and is screwed to the inclined portion 11B together with the shade 30 and the second substrate H1 of the second light source H described above.

（レンズ５０）
レンズ５０は、第１光源Ｌ及び第２光源Ｈからの光を所定の配光パターンとして前方側に照射するための部材であり、配光制御を行うレンズ部５１と、レンズ部５１の外周部に一体に設けられ、後述するレンズホルダ６０によって保持されるフランジ部５２と、を備えている。 (Lens 50)
The lens 50 is a member for irradiating the light from the first light source L and the second light source H to the front side as a predetermined light distribution pattern, and is a lens unit 51 that controls the light distribution and an outer peripheral portion of the lens unit 51. It is provided with a flange portion 52 integrally provided with the lens holder 60, which will be described later.

（レンズホルダ６０）
レンズホルダ６０は、第１光源Ｌ及び第２光源Ｈの前方側の所定の位置にレンズ５０を位置させる部材であり、ネジによって、ヒートシンク１０の図示しない取付部に対して取り付けられるとともに、図２に示すように、レンズ５０のフランジ部５２を保持する。 (Lens holder 60)
The lens holder 60 is a member that positions the lens 50 at predetermined positions on the front side of the first light source L and the second light source H, and is attached to a mounting portion (not shown) of the heat sink 10 by a screw and is also shown in FIG. As shown in the above, the flange portion 52 of the lens 50 is held.

（冷却ファン７０）
冷却ファン７０は、第１光源Ｌ及び第２光源Ｈを冷却するために、ヒートシンク１０を冷却するための風を発生する部材であり、配置等に関しては、後ほど詳細に説明するが、回転軸７１を中心に回転するインペラ７２と、そのインペラ７２の周囲を取り囲むハウジング７３と、を備えている。
なお、冷却ファン７０は、ヒートシンク１０のベース部１１から延在する、図示しない脚部にネジ止めされている。 (Cooling fan 70)
The cooling fan 70 is a member that generates wind for cooling the heat sink 10 in order to cool the first light source L and the second light source H. The arrangement and the like will be described in detail later, but the rotating shaft 71 It includes an impeller 72 that rotates around the center, and a housing 73 that surrounds the impeller 72.
The cooling fan 70 is screwed to a leg portion (not shown) extending from the base portion 11 of the heat sink 10.

次に、冷却効率を高めるための構成を説明するための図である図４を参照しながら、より詳細に構成等について説明する。
なお、図４は、図２と同様の図示になっており、説明がわかりやすいように余計な符号及び番号を省略した上で、説明に必要な図示を加えたものになっている。 Next, the configuration and the like will be described in more detail with reference to FIG. 4, which is a diagram for explaining the configuration for increasing the cooling efficiency.
Note that FIG. 4 has the same illustration as that of FIG. 2, and the illustrations necessary for the explanation are added after omitting unnecessary reference numerals and numbers so that the explanation can be easily understood.

図４に示すように、側面視で見て、冷却ファン７０は、冷却ファン７０の回転軸７１の延長線Ｘが第１発光チップＬ２の発光中心である第１発光中心を通る鉛直線Ｙに対して所定の角度θ１以上傾けて配置され、風を吹き出す吹出し面７４が前方斜め上側に傾斜している。
なお、水平方向での冷却ファン７０の位置は、第１発光チップＬ２及び第２発光チップＨ２の両方を網羅する位置（つまり、それらの下側の領域を網羅する位置）に配置される。 As shown in FIG. 4, when viewed from the side, the cooling fan 70 has a vertical line Y in which the extension line X of the rotation axis 71 of the cooling fan 70 passes through the first light emitting center, which is the light emitting center of the first light emitting chip L2. On the other hand, it is arranged at an inclination of θ1 or more at a predetermined angle, and the blowing surface 74 that blows out the wind is inclined forward and diagonally upward.
The position of the cooling fan 70 in the horizontal direction is arranged at a position that covers both the first light emitting chip L2 and the second light emitting chip H2 (that is, a position that covers the region below them).

このため、第１発光チップＬ２及び第２発光チップＨ２の双方が位置する方向に満遍なく風を送ることができるため、どちらの発光チップを有する光源に対しても高い冷却効率を得ることができる。 Therefore, since the wind can be evenly sent in the direction in which both the first light emitting chip L2 and the second light emitting chip H2 are located, high cooling efficiency can be obtained for the light source having either of the light emitting chips.

なお、先に触れたように、第１光源Ｌが水平方向に並ぶ複数の第１発光チップＬ２を有している場合もあるが、この場合でも、側面視で見れば、それらが同じ位置で重なって見えるため、第１発光チップＬ２の第１発光中心を通る鉛直線Ｙは１つの直線として扱うことが可能である。 As mentioned earlier, the first light source L may have a plurality of first light emitting chips L2 arranged in the horizontal direction, but even in this case, they are at the same position when viewed from the side. Since they appear to overlap, the vertical straight line Y passing through the first light emitting center of the first light emitting chip L2 can be treated as one straight line.

また、図４に示すように、側面視で見て、第２光源Ｈの配置される傾斜部１１Ｂの載置面１１ＢＡに対して直交する直交線ＯＬの鉛直線Ｙに対する角度を基準角度θ２としたときに、第１発光チップＬ２及び第２発光チップＨ２の双方が位置する方向に満遍なく風を送るために、所定の角度θ１は基準角度θ２の１／６以上、５／６以下であることが好ましく、所定の角度θ１は基準角度θ２の２／６以上、４／６以下であることがより好ましい。 Further, as shown in FIG. 4, when viewed from the side, the angle of the orthogonal line OL orthogonal to the mounting surface 11BA of the inclined portion 11B on which the second light source H is arranged is defined as the reference angle θ2. At this time, the predetermined angle θ1 is 1/6 or more and 5/6 or less of the reference angle θ2 in order to evenly send the wind in the direction in which both the first light emitting chip L2 and the second light emitting chip H2 are located. Is preferable, and the predetermined angle θ1 is more preferably 2/6 or more and 4/6 or less of the reference angle θ2.

なお、本実施形態では、第２光源Ｈの第２基板Ｈ１が熱伝導率のよい材料を用いたものとしているため、第２基板Ｈ１の載置される範囲を網羅するように風を送ることがよく、基準角度θ２を規定するにあたって、傾斜部１１Ｂの載置面１１ＢＡに対して直交する直交線ＯＬを用いている。 In this embodiment, since the second substrate H1 of the second light source H uses a material having good thermal conductivity, the wind is sent so as to cover the range on which the second substrate H1 is placed. Therefore, in defining the reference angle θ2, an orthogonal line OL orthogonal to the mounting surface 11BA of the inclined portion 11B is used.

そして、所定の角度θ１が、基準角度θ２のほぼ３／６（つまり、１／２）となると、第２基板Ｈ１の載置される範囲を全体的に網羅しやすいため、所定の角度θ１は基準角度θ２のほぼ３／６（つまり、１／２）であるのが最もよいと考えられる。 When the predetermined angle θ1 becomes approximately 3/6 (that is, 1/2) of the reference angle θ2, it is easy to cover the entire range on which the second substrate H1 is placed, so that the predetermined angle θ1 is set. It is considered best that the reference angle θ2 is approximately 3/6 (that is, 1/2).

しかしながら、第２基板Ｈ１の熱伝導率によっては、より第２発光チップＨ２の方向に風が向くようにすることが好ましい場合がある。
この場合には、鉛直線Ｙ上に冷却ファン７０の吹出し面７４側の回転軸７１が位置するようにしたときに、その冷却ファン７０の吹出し面７４側の回転軸７１に向かって第２発光チップＨ２の発光中心である第２発光中心から引いた直線を先の直交線ＯＬに代える直線ＯＬ’として、その直線ＯＬ’の鉛直線Ｙに対する角度を基準角度θ２とすればよく、このときにも所定の角度θ１は、基準角度θ２を基準にして説明した上記範囲が好ましい。 However, depending on the thermal conductivity of the second substrate H1, it may be preferable to direct the wind toward the second light emitting chip H2.
In this case, when the rotation shaft 71 on the outlet surface 74 side of the cooling fan 70 is positioned on the vertical straight line Y, the second light emission is directed toward the rotation shaft 71 on the outlet surface 74 side of the cooling fan 70. The straight line drawn from the second light emitting center, which is the light emitting center of the chip H2, may be set as the straight line OL'that replaces the previous orthogonal line OL', and the angle of the straight line OL'with respect to the vertical straight line Y may be set as the reference angle θ2. However, the predetermined angle θ1 is preferably in the above range described with reference to the reference angle θ2.

なお、第２光源Ｈは、先に説明したように、水平方向に複数の第２発光チップＨ２を有しているが、先に第１光源Ｌで説明したのと同様に、側面視で見れば、それらは重なって見えるため、水平方向に複数の第２発光チップＨ２を有する場合でも第２発光中心から引いた直線は１つの直線として扱うことが可能である。 The second light source H has a plurality of second light emitting chips H2 in the horizontal direction as described above, but can be seen from the side as in the case of the first light source L described above. For example, since they appear to overlap, a straight line drawn from the second light emitting center can be treated as one straight line even when a plurality of second light emitting chips H2 are provided in the horizontal direction.

また、図４に示すように、冷却ファン７０は、側面視で見て、回転軸７１の延長線Ｘが第１発光チップＬ２と第２発光チップＨ２の間を通るように配置されているようにすることで、確実に、第１発光チップＬ２及び第２発光チップＨ２の双方が位置する方向に満遍なく風を送ることができるため、どちらの発光チップを有する光源に対しても高い冷却効率を得ることができる。 Further, as shown in FIG. 4, the cooling fan 70 is arranged so that the extension line X of the rotating shaft 71 passes between the first light emitting chip L2 and the second light emitting chip H2 when viewed from the side. By doing so, it is possible to reliably send wind evenly in the direction in which both the first light emitting chip L2 and the second light emitting chip H2 are located, so that high cooling efficiency can be achieved for a light source having either light emitting chip. Obtainable.

一方、図４に示すように、ヒートシンク１０は、水平部１１Ａの裏面１１ＡＣと傾斜部１１Ｂの裏面１１ＢＣを繋ぐ、断面がほぼ三角形状の肉厚部１１Ｃを備えており、第１光源Ｌ及び第２光源Ｈからの熱を効率よく拡散できるため、冷却ファン７０から第１発光チップＬ２及び第２発光チップＨ２の双方が位置する方向に満遍なく風を送る効果に加え、より一層、放熱性をよくすることができる。 On the other hand, as shown in FIG. 4, the heat sink 10 includes a thick portion 11C having a substantially triangular cross section, which connects the back surface 11AC of the horizontal portion 11A and the back surface 11BC of the inclined portion 11B, and has a first light source L and a first light source L. Since the heat from the two light sources H can be efficiently diffused, in addition to the effect of evenly sending wind from the cooling fan 70 in the direction in which both the first light emitting chip L2 and the second light emitting chip H2 are located, the heat dissipation is further improved. can do.

具体的には、図４に示すように、肉厚部１１Ｃは、側面視で見て、第１発光チップＬ２の第１発光中心、又は、第２発光チップＨ２の第２発光中心から垂線（点線参照）を引くことが可能な表面１１ＣＡを有しており、第１発光チップＬ２又は第２発光チップＨ２からの熱を最短距離で冷却ファン７０の吹出し面７４に向けて伝搬できることが好ましい。 Specifically, as shown in FIG. 4, the thick portion 11C is a vertical line from the first light emitting center of the first light emitting chip L2 or the second light emitting center of the second light emitting chip H2 when viewed from the side. It is preferable that the surface 11CA is capable of drawing a dotted line), and heat from the first light emitting chip L2 or the second light emitting chip H2 can be propagated toward the blowing surface 74 of the cooling fan 70 in the shortest distance.

また、図４に示すように、肉厚部１１Ｃは、側面視で見て、第１発光チップＬ２の第１発光中心及び第２発光チップＨ２の第２発光中心の両方から垂線（点線参照）を引くことが可能な表面１１ＣＡを有していることがより好ましく、このようにすれば、第１発光チップＬ２及び第２発光チップＨ２の両方からの熱を最短距離で冷却ファン７０の吹出し面７４に向けて伝搬できる。 Further, as shown in FIG. 4, the thick portion 11C is a vertical line (see dotted line) from both the first light emitting center of the first light emitting chip L2 and the second light emitting center of the second light emitting chip H2 when viewed from the side. It is more preferable to have a surface 11CA capable of drawing heat from both the first light emitting chip L2 and the second light emitting chip H2 in the shortest distance. It can propagate toward 74.

なお、本実施形態では、第１発光チップＬ２よりも第２発光チップＨ２の数が多いため、その分、第２光源Ｈの発熱量が大きい。
このことから、第２光源Ｈの放熱効率がより高いことが望ましく、図４に示すように、肉厚部１１Ｃは、側面視で見て、表面１１ＣＡに対する第２発光チップＨ２の第２発光中心からの垂線（点線参照）が表面１１ＣＡに対する第１発光チップＬ２の第１発光中心からの垂線（点線参照）よりも長い表面１１ＣＡを有しているのが好適である。 In this embodiment, since the number of the second light emitting chips H2 is larger than that of the first light emitting chip L2, the amount of heat generated by the second light source H is large accordingly.
From this, it is desirable that the heat dissipation efficiency of the second light source H is higher, and as shown in FIG. 4, the thick portion 11C is the second light emitting center of the second light emitting chip H2 with respect to the surface 11CA when viewed from the side. It is preferable that the vertical line from (see dotted line) has a longer surface 11CA than the vertical line from the first light emitting center (see dotted line) of the first light emitting chip L2 with respect to the surface 11CA.

このようにすれば、第１発光チップＬ２側の肉厚部１１Ｃの肉厚が必要以上に厚くなり、コストが上昇するのを抑えつつ、より放熱性が求められる第２発光チップＨ２の放熱性を高めることが可能である。 By doing so, the wall thickness of the thick portion 11C on the first light emitting chip L2 side becomes thicker than necessary, and the heat dissipation of the second light emitting chip H2, which is required to have higher heat dissipation, while suppressing the cost increase. It is possible to increase.

さらに、図４に示すように、肉厚部１１Ｃは、側面視で見て、冷却ファン７０の吹出し面７４とほぼ平行である表面１１ＣＡを有していることが好ましく、このようにすれば、全体的に効率よく冷却ファン７０からの風を受けることができるので、全体的に高い放熱性を得ることができる。 Further, as shown in FIG. 4, the thick portion 11C preferably has a surface 11CA that is substantially parallel to the blowing surface 74 of the cooling fan 70 when viewed from the side. Since the wind from the cooling fan 70 can be efficiently received as a whole, high heat dissipation can be obtained as a whole.

一方、水平方向に関しても、肉厚部１１Ｃは、第１発光チップＬ２及び第２発光チップＨ２の範囲を網羅していることが好ましい。
そして、第１光源Ｌがロービーム配光用の光源であることから、仮に、第１光源Ｌを複数の第１発光チップＬ２を有するものとする場合であっても、ＡＤＢ制御を行うハイビーム配光用の光源である第２光源Ｈの第２発光チップＨ２の数よりも増やすことは少ないと考えられる。 On the other hand, also in the horizontal direction, it is preferable that the thick portion 11C covers the range of the first light emitting chip L2 and the second light emitting chip H2.
Since the first light source L is a light source for low beam light distribution, even if the first light source L has a plurality of first light emitting chips L2, the high beam light distribution that performs ADB control is performed. It is considered that the number of the second light source H, which is the light source for the second light source H, is less than the number of the second light emitting chips H2.

このことから、第１発光チップＬ２及び第２発光チップＨ２の範囲を確実に網羅する観点で考えれば、図３に示すように、第２発光チップＨ２のチップ列の幅を幅Ｗとすると、肉厚部１１Ｃは、水平方向の水平幅が第２発光チップＨ２のチップ列の幅Ｗ以上であることが好ましく、そうすることで、水平方向における第１発光チップＬ２及び第２発光チップＨ２の範囲を網羅する範囲の熱の効率的な拡散が行える。 From this, from the viewpoint of surely covering the range of the first light emitting chip L2 and the second light emitting chip H2, as shown in FIG. 3, assuming that the width of the chip row of the second light emitting chip H2 is the width W. The thick portion 11C preferably has a horizontal width equal to or greater than the width W of the chip row of the second light emitting chip H2, whereby the first light emitting chip L2 and the second light emitting chip H2 in the horizontal direction Efficient diffusion of heat in a range covering the range can be performed.

一方で、肉厚部１１Ｃの水平幅が大きすぎるとコストが上昇するため、肉厚部１１Ｃの水平幅は水平方向の水平部１１Ａの幅及び水平方向の傾斜部１１Ｂの幅よりも小さいことが好ましい。 On the other hand, if the horizontal width of the thick portion 11C is too large, the cost increases. Therefore, the horizontal width of the thick portion 11C may be smaller than the width of the horizontal portion 11A in the horizontal direction and the width of the inclined portion 11B in the horizontal direction. preferable.

以上のように、本実施形態によれば、複数の光源（第１光源Ｌ、第２光源Ｈ）が異なる位置に配置されていても、冷却ファン７０で効率よく冷却することができる。 As described above, according to the present embodiment, even if a plurality of light sources (first light source L, second light source H) are arranged at different positions, the cooling fan 70 can efficiently cool the light sources.

（変形例）
次に、本発明に係る実施形態の灯具ユニット１の変形例を説明するための図５を参照しながら、変形例について説明する。
なお、図５も図２と同様の断面図になっており、また、上記実施形態と同様の点については説明を省略する場合がある。 (Modification example)
Next, a modified example will be described with reference to FIG. 5 for explaining a modified example of the lamp unit 1 of the embodiment according to the present invention.
Note that FIG. 5 has the same cross-sectional view as that of FIG. 2, and the same points as those in the above embodiment may be omitted.

上記実施形態では、ヒートシンク１０に放熱フィンを設けていない場合について示したが、図５に示すように、ヒートシンク１０は、さらに、効率的に放熱が行えるようにするために、放熱フィン１４を備えていてもよい。 In the above embodiment, the case where the heat sink 10 is not provided with the heat radiating fins has been shown, but as shown in FIG. 5, the heat sink 10 is further provided with the heat radiating fins 14 in order to enable efficient heat dissipation. May be.

具体的には、ヒートシンク１０は、水平方向で肉厚部１１Ｃが存在しない水平部１１Ａの裏面１１ＡＣ及び傾斜部１１Ｂの裏面１１ＢＣ（つまり、肉厚部１１Ｃよりも車両幅方向外側）に設けられ、側面視で見て、回転軸７１の延長線Ｘにほぼ直交する方向に並ぶ複数の放熱フィン１４（点線参照）を備えている。 Specifically, the heat sink 10 is provided on the back surface 11AC of the horizontal portion 11A in which the wall thickness portion 11C does not exist in the horizontal direction and the back surface 11BC of the inclined portion 11B (that is, outside the wall thickness portion 11C in the vehicle width direction). When viewed from the side, it includes a plurality of heat radiation fins 14 (see dotted lines) arranged in a direction substantially orthogonal to the extension line X of the rotation axis 71.

そして、放熱フィン１４は、側面視で見て、冷却ファン７０に向かって斜め後方下側に肉厚部１１Ｃの表面１１ＣＡを超えて延在しているとともに、その放熱フィン１４は、水平方向で肉厚部１１Ｃが存在しない水平部１１Ａの裏面１１ＡＣ及び傾斜部１１Ｂの裏面１１ＢＣの部分から、実線で示すように、肉厚部１１Ｃ上にも延在している。 When viewed from the side, the heat radiation fin 14 extends diagonally rearward and downward toward the cooling fan 70 beyond the surface 11CA of the thick portion 11C, and the heat radiation fin 14 extends in the horizontal direction. As shown by a solid line, it extends from the back surface 11AC of the horizontal portion 11A and the back surface 11BC of the inclined portion 11B where the thick portion 11C does not exist to the thick portion 11C.

なお、図５に示すように、放熱フィン１４が、側面視で見て、冷却ファン７０の吹出し面７４に向かって延在していることで、放熱フィン１４の間の吹出し面７４側の隙間が吹出し面７４に対面することになるので効率よく、その隙間内に風が取り込まれ、放熱効率を高めることができる。 As shown in FIG. 5, the heat dissipation fins 14 extend toward the blowout surface 74 of the cooling fan 70 when viewed from the side, so that the gap between the heat dissipation fins 14 on the blowout surface 74 side is reached. Will face the blowout surface 74, so that the wind is efficiently taken into the gap and the heat dissipation efficiency can be improved.

また、図５に示すのとは異なり、複数の放熱フィン１４が水平方向に並べられている場合、肉厚部１１Ｃとの間で空気だまりとなる部分ができるが、図５に示すように、放熱フィン１４が回転軸７１の延長線Ｘにほぼ直交する方向に並ぶことで、そのような空気だまりの発生を抑制し、放熱フィン１４同士の間に送り込まれた風がスムーズに水平方向（車両幅方向）に流れるため、高い冷却効率を得ることができる。 Further, unlike that shown in FIG. 5, when a plurality of heat radiation fins 14 are arranged in the horizontal direction, a portion that becomes an air pool is formed between the heat radiation fins 14 and the thick portion 11C, but as shown in FIG. By arranging the heat radiating fins 14 in a direction substantially orthogonal to the extension line X of the rotation axis 71, the generation of such an air pool is suppressed, and the wind sent between the heat radiating fins 14 is smoothly horizontal (vehicle). Since it flows in the width direction), high cooling efficiency can be obtained.

以上、具体的な実施形態を基に本発明の説明を行ってきたが、本発明は、上記実施形態に限定されるものではない。
例えば、第２光源Ｈの第２基板Ｈ２の上端をカットオフラインの形状に合わせた形状として、シェード３０を省略する構成にしてもよく、技術的思想を逸脱することのない変更や改良を行ったものも発明の技術的範囲に含まれるものであり、そのことは当業者にとって特許請求の範囲の記載から明らかである。 Although the present invention has been described above based on specific embodiments, the present invention is not limited to the above embodiments.
For example, the upper end of the second substrate H2 of the second light source H may be shaped to match the shape of the cut-off line, and the shade 30 may be omitted, and changes and improvements have been made without departing from the technical idea. Those are also included in the technical scope of the invention, which is clear to those skilled in the art from the description of the scope of claims.

１灯具ユニット
１０ヒートシンク
１１ベース部
１１Ａ水平部
１１ＡＡ光源載置部
１１ＡＣ裏面
１１Ｂ傾斜部
１１ＢＡ載置面
１１ＢＣ裏面
１１Ｃ肉厚部
１１ＣＡ表面
１２光源ホルダ
１４放熱フィン
２０リフレクタ
２１反射部
２１Ａ反射面
２２フランジ部
３０シェード
３１遮光部
４０反射部材
４１反射部
５０レンズ
５１レンズ部
５２フランジ部
６０レンズホルダ
７０冷却ファン
７１回転軸
７２インペラ
７３ハウジング
７４吹出し面
Ｈ第２光源
Ｈ１第２基板
Ｈ２第２発光チップ
Ｈ３給電コネクタ
ＨＨ１位置決め孔
ＨＨ２ネジ孔
Ｌ第１光源
Ｌ１第１基板
Ｌ２第１発光チップ
Ｏ前方焦点
ＯＬ直交線
ＯＬ’ 直線
θ１所定の角度
θ２基準角度
Ｗチップ列の幅
Ｘ延長線
Ｙ鉛直線
Ｚ灯具光軸
１０１Ｌ、１０１Ｒ車両用灯具（前照灯）
１０２車両 1 Lighting unit 10 Heat shield 11 Base part 11A Horizontal part 11AA Light source mounting part 11AC Back side 11B Inclined part 11BA Mounting surface 11BC Back side 11C Thick part 11CA Surface 12 Light source holder 14 Light source fin 20 Reflector 21 Reflection part 21A Reflection surface 22 Flange part 30 Shade 31 Light-shielding part 40 Reflection member 41 Reflection part 50 Lens 51 Lens part 52 Flange part 60 Lens holder 70 Cooling fan 71 Rotating shaft 72 Impeller 73 Housing 74 Blow-out surface H Second light source H1 Second board H2 Second light emitting chip H3 Power supply Connector HH1 Positioning hole HH2 Screw hole L 1st light source L1 1st substrate L2 1st light emitting chip O Forward focus OL Orthogonal line OL'Straight line θ1 Predetermined angle θ2 Reference angle W Reference angle W Chip row width X Extension line Y Lead straight line Z Lighting equipment Light Axis 101L, 101R Vehicle lighting equipment (headlight)
102 vehicle

Claims

A heat sink with a base and
A first light source arranged on the base portion and having a first light emitting chip,
A second light source arranged on the base portion and having a second light emitting chip,
A cooling fan for cooling the heat sink is provided.
The base portion
The horizontal part where the first light source is arranged and
An inclined portion extending from the front side of the horizontal portion to the diagonally lower front side and arranging the second light source is provided.
When viewed from the side, the cooling fan is arranged so that the extension line of the rotation axis of the cooling fan is tilted at a predetermined angle or more with respect to the vertical line passing through the first light emitting chip, and the blowing surface for blowing wind is oblique forward. Tilt upwards ,
The heat sink includes a thick portion connecting the back surface of the horizontal portion and the back surface of the inclined portion.
The thick portion has a surface on which a perpendicular line can be drawn from the first light emitting center of the first light emitting chip or the second light emitting center of the second light emitting chip when viewed from the side.
The thick portion is characterized by having the surface in which the perpendicular line from the second light emitting center to the surface is longer than the perpendicular line from the first light emitting center to the surface when viewed from the side. Light fixtures for vehicles.

A heat sink with a base and
A first light source arranged on the base portion and having a first light emitting chip,
A second light source arranged on the base portion and having a second light emitting chip,
A cooling fan for cooling the heat sink is provided.
The base portion
The horizontal part where the first light source is arranged and
An inclined portion extending from the front side of the horizontal portion to the diagonally lower front side and arranging the second light source is provided.
When viewed from the side, the cooling fan is arranged so that the extension line of the rotation axis of the cooling fan is tilted at a predetermined angle or more with respect to the vertical line passing through the first light emitting chip, and the blowing surface for blowing wind is oblique forward. Tilt upwards,
The heat sink includes a thick portion connecting the back surface of the horizontal portion and the back surface of the inclined portion.
The thick portion has a surface on which a perpendicular line can be drawn from the first light emitting center of the first light emitting chip or the second light emitting center of the second light emitting chip when viewed from the side.
The second light source has a plurality of the second light emitting chips arranged in the horizontal direction.
In the thick portion, the horizontal width in the horizontal direction is equal to or larger than the width of the chip row of the second light emitting chip.
The horizontal width of the thick portion is smaller than the width of the horizontal portion in the horizontal direction and the width of the inclined portion in the horizontal direction.
The heat sink is provided on the back surface of the horizontal portion and the back surface of the inclined portion where the thick portion does not exist, and has a plurality of heat radiation fins arranged in a direction substantially orthogonal to the extension line of the rotation axis when viewed from the side. Prepare,
A vehicle lamp, characterized in that the heat radiation fins extend beyond the surface of the thick portion toward the cooling fan when viewed from the side .

The vehicle lamp according to claim 2, wherein the heat radiating fin extends also on the thick portion .

The predetermined angle is 1/6 or more and 5/6 or less of the reference angle.
From claim 1 , the reference angle is an angle with respect to the vertical straight line of an orthogonal line orthogonal to the mounting surface of the inclined portion in which the second light source is arranged when viewed from a side view. The vehicle lighting fixture according to any one of claims 3.

A first aspect of the present invention, wherein the cooling fan is arranged so that an extension line of the rotation axis passes between the first light emitting chip and the second light emitting chip when viewed from a side view . The vehicle lighting equipment according to any one of 4 .

The thick portion according to claim 1, wherein the thick portion has a surface capable of drawing a perpendicular line from both the first light emitting center and the second light emitting center when viewed from a side view. Item 5. The vehicle lighting fixture according to any one of Item 5 .

The thick portion according to any one of claims 1 to 6, wherein the thick portion has the surface substantially parallel to the blowing surface of the cooling fan when viewed from a side view. Vehicle lighting equipment.