JP6941827B1 - Light source bulb for vehicle lighting - Google Patents

Light source bulb for vehicle lighting Download PDF

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JP6941827B1
JP6941827B1 JP2020169741A JP2020169741A JP6941827B1 JP 6941827 B1 JP6941827 B1 JP 6941827B1 JP 2020169741 A JP2020169741 A JP 2020169741A JP 2020169741 A JP2020169741 A JP 2020169741A JP 6941827 B1 JP6941827 B1 JP 6941827B1
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晋士 石田
晋士 石田
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Abstract

【課題】車両等の良好な前方視界を実現しつつ対向車両や対向歩行者に対し眩惑を生じさせない車両用照明装置の光源バルブを提供する。【解決手段】車両の前方に位置する照明装置に用いる光源バルブにおいて、光源バルブ本体の左右に装着される半導体光源を、垂直軸に対し２．５〜７．５度下広がりの下方角を持って装着する。【選択図】図１PROBLEM TO BE SOLVED: To provide a light source bulb of a vehicle lighting device which does not cause dazzle to an oncoming vehicle or an oncoming pedestrian while realizing a good forward view of a vehicle or the like. SOLUTION: In a light source valve used for a lighting device located in front of a vehicle, semiconductor light sources mounted on the left and right sides of the light source valve body have a downward angle that spreads downward by 2.5 to 7.5 degrees with respect to the vertical axis. And attach it. [Selection diagram] Fig. 1

Description

本発明は、既存の車両において従来の光源バルブとそのまま交換するだけで、良好な前方視界を実現しつつ対向車両等に対し眩惑を生じさせない照明装置を実現することが出来る光源バルブに関するものである。 The present invention relates to a light source bulb capable of realizing a lighting device that does not cause dazzling to an oncoming vehicle or the like while realizing a good forward view by simply replacing the conventional light source bulb with a conventional light source bulb in an existing vehicle. ..

従来より車両または二輪車の前照灯及び霧灯等における光源としては、ハロゲンバルブまたはディスチャージ（ＨＩＤ）バルブ等が用いられてきた。
しかし近年、低消費電力化、高輝度化、長寿命化、軽量化等を目的として、発光ダイオード（ＬＥＤ）、レーザーダイオード（ＬＤ）等の半導体発光素子が用いられるようになってきた。 Conventionally, halogen bulbs, discharge (HID) bulbs, and the like have been used as light sources in headlights and fog lamps of vehicles or motorcycles.
However, in recent years, semiconductor light emitting elements such as light emitting diodes (LEDs) and laser diodes (LDs) have come to be used for the purpose of lowering power consumption, increasing brightness, extending life, and reducing weight.

一方、車両等の前方に位置する前照灯及び霧灯から発せられる光は、車両等の運転者にとっては良好な前方視界を得るために、充分な光量及び照射範囲であることが望ましいが、多大な光量はしばしば対向車両や対向歩行者に対し眩惑を生じさせることがあり、交通安全上好ましくないという相反する性質がある。
このため前照灯においては、自動または運転者の手動により、ハイビームとロービームの切り替えを行い、対向車両等が無い場合にはより視界の良好なハイビーム、対向車両等がある場合には眩惑を低減するロービーム、とを切り替えることで対応することができる。
しかし霧灯においては前述のハイビーム／ロービームの切り替えをする機構を持っておらず、点灯時には常に一定の光量・光束で前方に照射される。しかも霧灯を点灯させる時とは霧等が発生した視界不良時であることが多く、前照灯以上に、良好な視界を得ることと対向車両等に対する眩惑の低減との兼ね合いが難しいのが現状である。 On the other hand, it is desirable that the light emitted from the headlights and fog lights located in front of the vehicle or the like has a sufficient amount of light and an irradiation range in order to obtain a good forward visibility for the driver of the vehicle or the like. A large amount of light often causes dazzling to oncoming vehicles and oncoming pedestrians, which has the contradictory property of being unfavorable in terms of traffic safety.
For this reason, in the headlight, the high beam and the low beam are switched automatically or manually by the driver to reduce dazzling when there is a high beam with better visibility when there is no oncoming vehicle, etc., and when there is an oncoming vehicle, etc. It can be dealt with by switching between the low beam and the low beam.
However, the fog lamp does not have the above-mentioned mechanism for switching between high beam and low beam, and when it is lit, it is always irradiated forward with a constant amount of light and luminous flux. Moreover, when the fog lights are turned on, it is often the case that the visibility is poor due to fog, etc., and it is difficult to balance the acquisition of better visibility with the reduction of dazzling oncoming vehicles, etc., compared to the headlights. The current situation.

このような状況下において、車両用照明装置の光源バルブに関して、特許文献１〜３に記載の技術が提案されている。
特許文献１には、ＬＥＤバルブをリフレクタ部に取り付けたままで配光を調整できるようにした車両用灯具が記載されている。
また、特許文献２には、進行方向と直交する方向に延在する帯状の配光パターンを灯具前方に形成する車両用灯具が記載されている。
特許文献３には、概略Ｙ字状のヒートシンク上に発光素子を接続する車両用灯具が記載されている。 Under such circumstances, the techniques described in Patent Documents 1 to 3 have been proposed with respect to the light source bulb of the vehicle lighting device.
Patent Document 1 describes a vehicle lamp that allows the light distribution to be adjusted while the LED bulb is attached to the reflector portion.
Further, Patent Document 2 describes a vehicle lamp that forms a band-shaped light distribution pattern extending in a direction orthogonal to the traveling direction in front of the lamp.
Patent Document 3 describes a vehicle lamp in which a light emitting element is connected on a heat sink having a substantially Y shape.

特開２０１６−１９２３５０号公報Japanese Unexamined Patent Publication No. 2016-192350 特開２０１３−５８３７４号公報Japanese Unexamined Patent Publication No. 2013-58374 特開２０１２−２１６５５７号公報Japanese Unexamined Patent Publication No. 2012-216557

しかしながら、特許文献１に記載の技術によれば、これはリフレクタへの挿入度合い及び角度の調整を目的としており、２個のＬＥＤ１４は１８０度反対方向に取り付けられ、それらは角度を持って取り付けられているものではない。
また、特許文献２に記載の技術は、主配光パターンを有する前照灯とは別に、路肩等の視認性を高めるための補助灯具であり、明らかに前照灯の配光パターンとは異なる位置を照らす別目的の灯具である。
特許文献３に記載の技術によれば、分岐したヒートシンクの内側の面を利用して放熱効果を高めることを目的としており、また専用のリフレクタを用いることから、汎用の光源バルブと交換可能な光源ではない。 However, according to the technique described in Patent Document 1, this is for the purpose of adjusting the degree of insertion into the reflector and the angle, the two LEDs 14 are mounted 180 degrees in opposite directions, and they are mounted at an angle. Not what you are doing.
Further, the technique described in Patent Document 2 is an auxiliary lamp for enhancing the visibility of road shoulders and the like, separately from the headlight having the main light distribution pattern, and is clearly different from the light distribution pattern of the headlight. It is a lamp for another purpose that illuminates the position.
According to the technique described in Patent Document 3, the purpose is to enhance the heat dissipation effect by utilizing the inner surface of the branched heat sink, and since a dedicated reflector is used, a light source that can be replaced with a general-purpose light source bulb. is not it.

このように、車両等の良好な前方視界を実現しつつ対向車両や対向歩行者に対し眩惑を生じさせない照明装置に関するニーズはあるものの、その技術的解決手段については未だ、有効なものは存在しない。 As described above, although there is a need for a lighting device that realizes a good forward view of a vehicle or the like and does not cause dazzle to an oncoming vehicle or an oncoming pedestrian, there is still no effective technical solution thereof. ..

そこで、本発明者は、半導体光源から発せられる光束の角度やそのバランスに着目し、
光源バルブ本体の側面に半導体光源を装着するのに際し、一定の角度を持って装着することにより、半導体光源から発せられる光束の角度やそのバランスを調整し、理想的な光量バランスを得ることができることを知見し、本発明を完成させた。 Therefore, the present inventor pays attention to the angle of the luminous flux emitted from the semiconductor light source and its balance.
When mounting a semiconductor light source on the side surface of the light source valve body, by mounting it at a certain angle, it is possible to adjust the angle and balance of the luminous flux emitted from the semiconductor light source and obtain an ideal light quantity balance. , And completed the present invention.

本発明は、車両等の良好な前方視界を実現しつつ対向車両や対向歩行者に対し眩惑を生じさせない車両用照明装置の光源バルブを提供することを目的とする。 An object of the present invention is to provide a light source bulb for a vehicle lighting device that does not cause dazzle to an oncoming vehicle or an oncoming pedestrian while realizing a good forward view of a vehicle or the like.

請求項１に記載の発明は、車両の前方に位置する照明装置に用いられる車両用照明装置の光源バルブにおいて、光源バルブ本体の左右に装着される半導体光源が、垂直軸に対し２．５〜７．５度下広がりの下方角を持って装着される車両用照明装置の光源バルブであって、前記照明装置は、前照灯灯具または霧灯灯具であり、前記半導体光源の照射範囲が６０〜１４０度である車両用照明装置の光源バルブである。 According to the first aspect of the present invention, in the light source valve of the vehicle lighting device used for the lighting device located in front of the vehicle, the semiconductor light sources mounted on the left and right sides of the light source valve body are 2.5 to 2.5 to the vertical axis. A light source valve for a vehicle lighting device mounted with a downward angle of 7.5 degrees. The lighting device is a headlight lighting device or a fog lighting device, and the irradiation range of the semiconductor light source is 60. It is a light source valve of a vehicle lighting device having a temperature of ~ 140 degrees .

垂直軸とは、車両用照明装置の光源バルブを車両に取り付けたとき、光源バルブ本体は車両本体から突出するように車両に設けられることになるが、その状態における鉛直方向に延びる軸をいう。 The vertical axis refers to an axis extending in the vertical direction in a state in which the light source bulb main body is provided on the vehicle so as to protrude from the vehicle main body when the light source bulb of the vehicle lighting device is attached to the vehicle.

請求項２に記載の発明は、光源バルブ本体の左右に装着される半導体光源が、さらにバルブの前後方向に向かって延びる中心軸に対し２．５〜７．５度バルブ先端側広がりの前方角を持って装着される請求項１に記載の車両用照明装置の光源バルブである。 According to the second aspect of the present invention, the semiconductor light sources mounted on the left and right sides of the light source bulb body have a front angle of 2.5 to 7.5 degrees with respect to the central axis extending in the front-rear direction of the bulb. The light source bulb of the vehicle lighting device according to claim 1, which is mounted by the light source.

中心軸とは、車両用照明装置の光源バルブを車両に取り付けたときにおける、光源バルブ本体の前後方向に向かって延びる軸のことである。つまり、光源バルブ本体は車両本体から突出するように車両に設けられることになるが、その状態における光源バルブの突出方向と同一方向に延びる軸をいう。
中心軸に対し２．５〜７．５度バルブ先端側広がりの前方角を持って装着されるとは、バルブ口金側は狭まり、バルブ先端側が広がる前方角をもって半導体光源が装着され、そのときの角度は、中心軸に対して、２．５〜７．５度であることをいう。 The central axis is an axis extending in the front-rear direction of the light source bulb body when the light source bulb of the vehicle lighting device is attached to the vehicle. That is, the light source bulb main body is provided on the vehicle so as to protrude from the vehicle main body, and refers to an axis extending in the same direction as the light source bulb protruding direction in that state.
When mounted with a front angle that widens toward the bulb tip side by 2.5 to 7.5 degrees with respect to the central axis, the semiconductor light source is mounted with a front angle that narrows the bulb base side and widens the bulb tip side. The angle is 2.5 to 7.5 degrees with respect to the central axis.

請求項３に記載の発明は、車両の前方に位置する照明装置に用いられる車両用照明装置の光源バルブにおいて、光源バルブ本体の左右にそれぞれ装着される複数の半導体光源が、垂直軸に対し２．５〜７．５度下広がりの下方角を持って装着され、前記光源バルブ本体は、その先端側から所定の長さ位置までの部分である前方光源バルブ本体と、前記光源バルブ本体の先端側から所定の長さ位置までの部分以外の部分である後方光源バルブ本体とに区分され、前記前方光源バルブ本体の左右に装着される半導体光源のみが、さらにバルブの前後方向に向かって延びる中心軸に対し２．５〜７．５度バルブ先端側広がりの前方角を持って装着される車両用照明装置の光源バルブであって、前記照明装置は、前照灯灯具または霧灯灯具であり、前記半導体光源の照射範囲が６０〜１４０度である車両用照明装置の光源バルブである。 According to the third aspect of the present invention, in the light source valve of the vehicle lighting device used for the lighting device located in front of the vehicle, a plurality of semiconductor light sources mounted on the left and right sides of the light source valve body are 2 with respect to the vertical axis. It is mounted with a downward angle that spreads downward by 5.5 to 7.5 degrees, and the light source valve body is a front light source valve body that is a portion from the tip side to a predetermined length position, and the tip of the light source valve body. The center is divided into the rear light source valve body, which is a part other than the part from the side to the predetermined length position, and only the semiconductor light sources mounted on the left and right sides of the front light source valve body further extend in the front-rear direction of the valve. A light source valve for a vehicle lighting device that is mounted with a front angle that extends 2.5 to 7.5 degrees to the tip of the valve , and the lighting device is a headlight lighting device or a fog lighting device. A light source valve for a vehicle lighting device in which the irradiation range of the semiconductor light source is 60 to 140 degrees .

通常の光源バルブと交換して本発明の光源バルブを用いることによって、特別な配光分布を施していないリフレクタを有する通常の照明装置であっても、路面を充分に明るく照らす低い角度の光束が多く、対向車や対向歩行者への眩惑を引き起こす高い角度の光束が少ない、理想的な照明装置を得ることが実現できる。 By using the light source bulb of the present invention in place of the normal light source bulb, a low-angle luminous flux that illuminates the road surface sufficiently brightly can be obtained even in a normal lighting device having a reflector that does not have a special light distribution. It is possible to obtain an ideal lighting device with a small amount of light flux at a high angle that causes dazzling to oncoming vehicles and pedestrians.

（ａ）本発明の実施例１に係る車両用照明装置の光源バルブ（以下、単に「光源バルブ」と記載する。）の斜視図である。（ｂ）本発明の実施例１に係る光源バルブの上面図である。（ｃ）本発明の実施例１に係る光源バルブの側面図である。(A) It is a perspective view of the light source bulb (hereinafter, simply referred to as "light source bulb") of the vehicle lighting device which concerns on Example 1 of this invention. (B) It is a top view of the light source bulb which concerns on Example 1 of this invention. (C) It is a side view of the light source bulb which concerns on Example 1 of this invention. 本発明の実施例１に係る光源バルブのバルブ先端側前面図、ａ−ａ断面図、ｂ−ｂ断面図である。It is a bulb tip side front view, aa cross-sectional view, bb cross-sectional view of the light source valve which concerns on Example 1 of this invention. （ａ）本発明の実施例２に係る光源バルブの上面図である。（ｂ）本発明の実施例２に係る光源バルブの側面図である。(A) It is a top view of the light source bulb which concerns on Example 2 of this invention. (B) It is a side view of the light source bulb which concerns on Example 2 of this invention. （ａ）本発明の実施例３に係る光源バルブの上面図である。（ｂ）本発明の実施例３に係る光源バルブの側面図である。(A) It is a top view of the light source bulb which concerns on Example 3 of this invention. (B) It is a side view of the light source bulb which concerns on Example 3 of this invention.

以下、本発明を実施するための形態（実施例）について、図面を参照しながら説明する。 Hereinafter, embodiments (examples) for carrying out the present invention will be described with reference to the drawings.

（実施例１）
図１は、本発明の実施例１に係る光源バルブの斜視図である。光源バルブ本体２の両側面に開孔部があり、その中に半導体光源１が角度を有して装着される。また光源バルブ本体２は口金３を介して車両用照明装置に取り付け可能であり、従来の光源バルブと互換性を有する。 (Example 1)
FIG. 1 is a perspective view of a light source bulb according to a first embodiment of the present invention. There are openings on both side surfaces of the light source valve main body 2, and the semiconductor light source 1 is mounted at an angle in the holes. Further, the light source bulb main body 2 can be attached to the vehicle lighting device via the base 3, and is compatible with the conventional light source bulb.

前記半導体光源１としては、発光ダイオード（ＬＥＤ）、レーザーダイオード（ＬＤ）、有機エレクトロルミネッセンス（有機ＥＬ）、無機エレクトロルミネッセンス（無機ＥＬ）、スーパールミネッセントダイオード（ＳＬＤ）光源等任意に用いられる。中でも高輝度、高演色性、低コスト、入手容易性、耐衝撃性、耐熱性、耐候性、長寿命、小型化、軽量化、低発熱等の理由により、ＬＥＤが好ましい。
ＬＥＤの材質としては、アルミニウムガリウムヒ素（ＡｌＧａＡｓ）、ガリウムヒ素リン（ＧａＡｓＰ）、インジウム窒化ガリウム（ＩｎＧａＮ）、窒化ガリウム（ＧａＮ）、アルミニウム窒化ガリウム（ＡｌＧａＮ）、リン化ガリウム（ＧａＰ）、セレン化亜鉛（ＺｎＳｅ）、アルミニウムインジウムガリウムリン（ＡｌＧａＩｎＰ）など発光特性に合わせて好適に利用出来る。
より具体的には、ＣＲＥＥ社製、日亜化学製、オスラム製、サムスン製、フィリップス製等の車両照明用半導体光源が好適に使用される。
半導体光源１の搭載面積は、光源バルブ本体２の片側当たり３０〜５０ｍｍ２程度が必要であるが、用いる発光素子の単位面積あたりの発光効率や使用する発光装置に求められる発光量などから必要とされる面積が変わってくる。
前記半導体光源１の発光量は、光源バルブ本体２の両側合わせて５００〜７０００ｌｍ程度が必要とされるが、搭載する車体の種類等によってはより大光量が必要な場合や、補助光源として小光量のみ必要な場合もあるので、これらに限定されない。
半導体光源１の発光色は、透明レンズの前照灯、黄色レンズの霧灯には、白色発光体、透明レンズの霧灯には黄色発光体等を用いること等が出来るが、これらに限定はされず、任意の発光スペクトルを持つ発光素子が用いられる。また半導体光源１は光源バルブ本体２の左右それぞれ１つずつでも構わないものの、複数個の並列装着、異なる発色の複数個（例：白色と黄色）の混合装着など、自由に設計し得る。
半導体光源１の動作に必要な回路としては、変圧回路、安定化回路、保護回路等があるが、当業者が必要と考える回路であれば、適宜組み合わせて使用することが出来る。 As the semiconductor light source 1, a light emitting diode (LED), a laser diode (LD), an organic electroluminescent (organic EL), an inorganic electroluminescent (inorganic EL), a superluminescent diode (SLD) light source, or the like is arbitrarily used. Among them, LEDs are preferable because of high brightness, high color rendering property, low cost, availability, impact resistance, heat resistance, weather resistance, long life, miniaturization, weight reduction, low heat generation and the like.
LED materials include aluminum gallium arsenide (AlGaAs), gallium phosphide phosphorus (GaAsP), indium gallium nitride (InGaN), gallium nitride (GaN), gallium nitride (AlGaN), gallium phosphide (GaP), and zinc selenium. (ZnSe), aluminum indium gallium phosphide (AlGaInP), etc. can be suitably used according to the light emitting characteristics.
More specifically, semiconductor light sources for vehicle lighting such as those manufactured by CREE, Nichia, Osram, Samsung, and Philips are preferably used.
The mounting area of the semiconductor light source 1 needs to be about 30 to 50 mm 2 per side of the light source valve main body 2, but it is necessary because of the luminous efficiency per unit area of the light emitting element used and the amount of light emitted from the light emitting device used. The area to be used will change.
The amount of light emitted from the semiconductor light source 1 is required to be about 500 to 7,000 lm in total on both sides of the light source bulb body 2, but depending on the type of the vehicle body to be mounted, a larger amount of light may be required, or a small amount of light may be used as an auxiliary light source. Not limited to these, as they may only be needed.
The emission color of the semiconductor light source 1 may be a headlight of a transparent lens, a white light emitter for a fog lamp of a yellow lens, a yellow light emitter or the like for a fog lamp of a transparent lens, etc., but the limitation is limited to these. Instead, a light emitting element having an arbitrary emission spectrum is used. Further, although the semiconductor light source 1 may be mounted one on each side of the light source bulb main body 2, a plurality of semiconductor light sources 1 may be mounted in parallel, or a plurality of different colored colors (eg, white and yellow) may be mixed and mounted.
Circuits necessary for the operation of the semiconductor light source 1 include a transformer circuit, a stabilization circuit, a protection circuit, and the like, but any circuit considered necessary by those skilled in the art can be used in combination as appropriate.

光源バルブ本体２は、直径１０〜１４ｍｍ、長さ３０〜４５ｍｍ程度が必要とされる。これは既存の発光バルブとの互換性の維持を目的とし、リフレクタ内の焦点に半導体光源１を保持するために必要な数値である。
光源バルブ本体２の材質は、銅、アルミニウム、ステンレス、樹脂等が使用出来る。なかでも半導体光源１が発する熱の放熱性、耐衝撃性、耐候性、強度、入手容易性、低コスト等からアルミニウム及び銅が好適に使用される。 The light source bulb body 2 is required to have a diameter of 10 to 14 mm and a length of about 30 to 45 mm. This is a numerical value required to hold the semiconductor light source 1 at the focal point in the reflector for the purpose of maintaining compatibility with the existing light emitting bulb.
As the material of the light source bulb body 2, copper, aluminum, stainless steel, resin or the like can be used. Among them, aluminum and copper are preferably used because of heat dissipation, impact resistance, weather resistance, strength, availability, low cost, and the like of heat generated by the semiconductor light source 1.

この光源バルブ本体２には、半導体光源１が固着されている。具体的には、光源バルブ本体２の両側面に開孔部があり、その中に半導体光源１が角度を有して装着される。装着時における半導体光源１の有する角度は、図２において図示される∠Ａ、∠Ａ'、∠Ｂ及び∠Ｂ'である。つまり、光源バルブを車両に取り付けたとき、光源バルブ本体２は車両本体から突出するように車両に設けられることになる。この状態における鉛直方向に延びる軸（垂直軸）に対する下広がりの下方角が∠Ａ、∠Ａ'、∠Ｂ及び∠Ｂ'である。
この下方角は、∠Ａ、∠Ａ'、∠Ｂ及び∠Ｂ'は各々独立に２．５〜７．５度である。
下方角が２．５度より小さいと、路面を照らす低い角度の光束と、対向車や対向歩行者への眩惑を引き起こす高い角度の光束が拮抗し、従来の光源ランプと同様の問題が生じる。
下方角が２．５〜７．５度の範囲であると、路面を充分に明るく照らす低い角度の光束が多く、対向車や対向歩行者への眩惑を引き起こす高い角度の光束が少ない、理想的な光量配分が得られる。
一方下方角が７．５度より大きいと、路面を照らす低い角度の光束のみに光量が偏り、遠方の路面まで到達する光量に不足が生じる。
最も好ましい下方角は５度である。 A semiconductor light source 1 is fixed to the light source bulb body 2. Specifically, there are openings on both side surfaces of the light source valve main body 2, and the semiconductor light source 1 is mounted at an angle in the openings. The angles of the semiconductor light source 1 at the time of mounting are ∠A, ∠A', ∠B and ∠B'shown in FIG. That is, when the light source bulb is attached to the vehicle, the light source bulb main body 2 is provided on the vehicle so as to protrude from the vehicle main body. In this state, the downward angles of the downward spread with respect to the axis extending in the vertical direction (vertical axis) are ∠A, ∠A', ∠B and ∠B'.
This downward angle is 2.5 to 7.5 degrees for ∠A, ∠A', ∠B and ∠B', respectively.
If the downward angle is smaller than 2.5 degrees, the low-angle luminous flux that illuminates the road surface and the high-angle luminous flux that causes dazzling oncoming vehicles and pedestrians antagonize each other, causing the same problem as a conventional light source lamp.
When the downward angle is in the range of 2.5 to 7.5 degrees, there is a lot of low-angle luminous flux that illuminates the road surface sufficiently brightly, and there is little high-angle luminous flux that causes dazzling oncoming vehicles and pedestrians, ideally. A good light distribution can be obtained.
On the other hand, if the downward angle is larger than 7.5 degrees, the amount of light is biased only to the luminous flux at a low angle that illuminates the road surface, and the amount of light reaching the distant road surface becomes insufficient.
The most preferred downward angle is 5 degrees.

また、半導体光源１が光源バルブ本体２の左右それぞれに、前方バルブ先端側及び後方バルブ口金側の２組ずつ装着されている。図２に示すように、後方側の半導体光源１は中心軸ＡＸＳ−Ｌに対して平行に装着されている。前方側の半導体光源１は中心軸ＡＸＳ−Ｌに対してそれぞれ∠Ｃ及び∠Ｃ'の前方角を有して装着され、その値は各々独立に２．５〜７．５度である。 Further, two sets of semiconductor light sources 1 are mounted on the left and right sides of the light source bulb main body 2, respectively, on the front bulb tip side and the rear bulb base side. As shown in FIG. 2, the semiconductor light source 1 on the rear side is mounted parallel to the central axis AXS-L. The semiconductor light source 1 on the front side is mounted with a front angle of ∠C and ∠C'with respect to the central axis AXS-L, respectively, and the values are independently 2.5 to 7.5 degrees.

口金３は、既存の発光バルブとの互換性を維持するため、車両用照明装置の規格に合致したものが使用される。本発明は特に霧灯に用いられるが、前照灯に用いることも出来るため、それぞれの規格に従う。また用いる車両の大小によってもそれぞれの規格に従う。
口金３はまた、車両用照明装置の規格に合致した給電端子を有する。車両の多くは１２Ｖ又は２４Ｖであるため、それらの入力電圧に合わせて、光源バルブ本体２の内部に半導体光源１の駆動回路が用意される。 As the base 3, in order to maintain compatibility with the existing light emitting bulb, a base 3 conforming to the standard of the vehicle lighting device is used. Although the present invention is particularly used for fog lamps, it can also be used for headlights, and therefore conforms to the respective standards. In addition, each standard is followed depending on the size of the vehicle used.
The base 3 also has a power supply terminal that conforms to the standard of the vehicle lighting device. Since most of the vehicles are 12V or 24V, a drive circuit of the semiconductor light source 1 is prepared inside the light source bulb main body 2 according to their input voltages.

（実施例２）
図３に示すように、本発明の実施例２に係る光源バルブは、半導体光源１が光源バルブ本体２の左右それぞれに装着され、半導体光源１はすべて中心軸ＡＸＳ−Ｌに対して平行に装着される。
また、半導体光源１は、垂直軸ＡＸＳ−Ｖに対してそれぞれ∠Ａ及び∠Ａ'の下方角を有して装着され、その値は各々独立に２．５〜７．５度である。
そのほかの構成は実施例１と共通のため、省略する。 (Example 2)
As shown in FIG. 3, in the light source valve according to the second embodiment of the present invention, the semiconductor light source 1 is mounted on each of the left and right sides of the light source valve main body 2, and all the semiconductor light sources 1 are mounted parallel to the central axis AXS-L. Will be done.
Further, the semiconductor light source 1 is mounted with downward angles of ∠A and ∠A'with respect to the vertical axis AXS-V, respectively, and the values thereof are independently 2.5 to 7.5 degrees.
Since the other configurations are the same as those in the first embodiment, they will be omitted.

（実施例３）
図４に示すように、本発明の実施例３に係る光源バルブは、半導体光源１が光源バルブ本体２の左右それぞれに装着されている。半導体光源１は中心軸ＡＸＳ−Ｌに対してそれぞれ∠Ｄ及び∠Ｄ'の前方角を有して装着され、その値は各々独立に２．５〜７．５度である。
また、半導体光源１は、垂直軸ＡＸＳ−Ｖに対してそれぞれ∠Ｂ及び∠Ｂ'の下方角を有して装着され、その値は各々独立に２．５〜７．５度である。
そのほかの構成は、実施例１と共通のため、省略する。 (Example 3)
As shown in FIG. 4, in the light source bulb according to the third embodiment of the present invention, the semiconductor light source 1 is mounted on the left and right sides of the light source bulb main body 2. The semiconductor light source 1 is mounted with a forward angle of ∠D and ∠D'with respect to the central axis AXS-L, respectively, and the values are independently 2.5 to 7.5 degrees.
Further, the semiconductor light source 1 is mounted with downward angles of ∠B and ∠B'with respect to the vertical axis AXS-V, respectively, and the values thereof are independently 2.5 to 7.5 degrees.
Since other configurations are common to those of the first embodiment, they will be omitted.

（照射実験）
半導体光源１に使用されるＬＥＤの照射範囲は、ＬＥＤチップにより性能が異なるものの、その照射範囲は６０〜１４０度である。一般に自動車用として使用されるＬＥＤチップの照射範囲は１２０度のものである。
そこで、実施例１〜３に係る光源バルブについて、日本での自動車市場において使用される頻度の高い霧灯灯具を用い、照射実験を行った。
その照射実験の結果を表１に示す。
このように、半導体光源１に所定範囲角度を設けることにより、特別な配光分布を施していないリフレクタを有する通常の照明装置であっても、路面を充分に明るく照らす低い角度の光束が多く、対向車や対向歩行者への眩惑を引き起こす高い角度の光束が少ない、理想的な照明装置を得ることが実現できることを確認できた。

Figure 0006941827
(Irradiation experiment)
The irradiation range of the LED used for the semiconductor light source 1 is 60 to 140 degrees, although the performance differs depending on the LED chip. The irradiation range of an LED chip generally used for automobiles is 120 degrees.
Therefore, for the light source bulbs according to Examples 1 to 3, an irradiation experiment was conducted using a fog lamp that is frequently used in the automobile market in Japan.
The results of the irradiation experiment are shown in Table 1.
In this way, by providing the semiconductor light source 1 with a predetermined range angle, even a normal lighting device having a reflector that does not have a special light distribution distribution has many low-angle light fluxes that illuminate the road surface sufficiently brightly. It was confirmed that it is possible to obtain an ideal lighting device with a small amount of luminous flux at a high angle that causes dazzling to oncoming vehicles and pedestrians.
Figure 0006941827

既存の車体における光源バルブとそのまま交換するだけで、リフレクタの調整等の追加の手間を要さずに、最適化した光量分布を持つ照明装置を実現することができる。 By simply replacing the light source bulb in the existing vehicle body as it is, it is possible to realize a lighting device having an optimized light amount distribution without the need for additional labor such as adjusting the reflector.

１ 半導体光源
２ 光源バルブ本体
３ 口金 1 Semiconductor light source 2 Light source bulb body 3 Base

Claims (3)

車両の前方に位置する照明装置に用いられる車両用照明装置の光源バルブにおいて、
光源バルブ本体の左右に装着される半導体光源が、垂直軸に対し２．５〜７．５度下広がりの下方角を持って装着される車両用照明装置の光源バルブであって、
前記照明装置は、前照灯灯具または霧灯灯具であり、
前記半導体光源の照射範囲が６０〜１４０度である車両用照明装置の光源バルブ。 In the light source bulb of a vehicle lighting device used for a lighting device located in front of the vehicle
The semiconductor light sources mounted on the left and right sides of the light source bulb body are the light source bulbs of the vehicle lighting device mounted with a downward angle of 2.5 to 7.5 degrees downward with respect to the vertical axis .
The lighting device is a headlight lamp or a fog lamp, and is
A light source bulb for a vehicle lighting device in which the irradiation range of the semiconductor light source is 60 to 140 degrees. 光源バルブ本体の左右に装着される半導体光源が、さらにバルブの前後方向に向かって延びる中心軸に対し２．５〜７．５度バルブ先端側広がりの前方角を持って装着される請求項１に記載の車両用照明装置の光源バルブ。 Light source The semiconductor light sources mounted on the left and right sides of the bulb body are mounted with a front angle of 2.5 to 7.5 degrees with respect to the central axis extending in the front-rear direction of the bulb. The light source bulb of the vehicle lighting device described in. 車両の前方に位置する照明装置に用いられる車両用照明装置の光源バルブにおいて、
光源バルブ本体の左右にそれぞれ装着される複数の半導体光源が、垂直軸に対し２．５〜７．５度下広がりの下方角を持って装着され、
前記光源バルブ本体は、その先端側から所定の長さ位置までの部分である前方光源バルブ本体と、前記光源バルブ本体の先端側から所定の長さ位置までの部分以外の部分である後方光源バルブ本体とに区分され、
前記前方光源バルブ本体の左右に装着される半導体光源のみが、さらにバルブの前後方向に向かって延びる中心軸に対し２．５〜７．５度バルブ先端側広がりの前方角を持って装着される車両用照明装置の光源バルブであって、
前記照明装置は、前照灯灯具または霧灯灯具であり、
前記半導体光源の照射範囲が６０〜１４０度である車両用照明装置の光源バルブ。 In the light source bulb of a vehicle lighting device used for a lighting device located in front of the vehicle
A plurality of semiconductor light sources mounted on the left and right sides of the light source bulb body are mounted with a downward angle of 2.5 to 7.5 degrees downward with respect to the vertical axis.
The light source bulb body is a portion other than the front light source bulb body, which is a portion from the tip side to a predetermined length position, and the rear light source bulb body, which is a portion other than the portion from the tip side of the light source valve body to a predetermined length position. It is divided into the main body and
Only the semiconductor light sources mounted on the left and right sides of the front light source bulb body are mounted with a front angle that extends 2.5 to 7.5 degrees toward the bulb tip side with respect to the central axis extending in the front-rear direction of the bulb. a light source bulb of a lighting device vehicle,
The lighting device is a headlight lamp or a fog lamp, and is
A light source bulb for a vehicle lighting device in which the irradiation range of the semiconductor light source is 60 to 140 degrees.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004111355A (en) * 2002-06-10 2004-04-08 Lumileds Lighting Us Llc Led light source of axial line direction
WO2013132530A1 (en) * 2012-03-06 2013-09-12 三菱電機株式会社 Light source for headlight and headlight
JP2016119282A (en) * 2014-12-23 2016-06-30 ソルテクノロジー・カンパニー・リミテッドＳｏｌｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｔｄ． LED lamp module for vehicle
JP2018185942A (en) * 2017-04-25 2018-11-22 Ｉｐｆ株式会社 LED bulb for vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004111355A (en) * 2002-06-10 2004-04-08 Lumileds Lighting Us Llc Led light source of axial line direction
WO2013132530A1 (en) * 2012-03-06 2013-09-12 三菱電機株式会社 Light source for headlight and headlight
JP2016119282A (en) * 2014-12-23 2016-06-30 ソルテクノロジー・カンパニー・リミテッドＳｏｌｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｔｄ． LED lamp module for vehicle
JP2018185942A (en) * 2017-04-25 2018-11-22 Ｉｐｆ株式会社 LED bulb for vehicle

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