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JP2008037240A - Vehicle headlamp - Google Patents

Vehicle headlamp Download PDF

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Publication number
JP2008037240A
JP2008037240A JP2006213446A JP2006213446A JP2008037240A JP 2008037240 A JP2008037240 A JP 2008037240A JP 2006213446 A JP2006213446 A JP 2006213446A JP 2006213446 A JP2006213446 A JP 2006213446A JP 2008037240 A JP2008037240 A JP 2008037240A
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high beam
irradiation
vehicle
beam irradiation
turned
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JP4708285B2 (en
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Shinya Watanabe
紳也 渡辺
Satoshi Yamamura
聡志 山村
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Koito Manufacturing Co Ltd
Toyota Motor Corp
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Koito Manufacturing Co Ltd
Toyota Motor Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/05—Special features for controlling or switching of the light beam
    • B60Q2300/056—Special anti-blinding beams, e.g. a standard beam is chopped or moved in order not to blind

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

【課題】ハイビームによって遠方の視界を確保しつつ、照射禁止対象へのハイビームの照射を抑制できる車両用ヘッドランプを得る。
【解決手段】車両用ヘッドランプ１０では、車両前方に車幅方向に並んで配列される複数のハイビーム照射エリア２４Ａ〜２４Ｈのそれぞれへ向けて各々が個別に光を照射する複数のハイビームユニットと、複数のハイビーム照射エリア２４Ａ〜２４Ｈの何れかに照射禁止対象が存在しているか否かを検出する検出手段と、複数のハイビームユニットを点灯又は消灯させ、検出手段が照射禁止対象（例えば、対向車２５）の存在を検出したときには、当該照射禁止対象が存在しているハイビーム照射エリア２４（例えば、ハイビーム照射エリア２４Ｂ）用のハイビームユニットを消灯する制御手段と、を備えている。
【選択図】図２A vehicle headlamp capable of suppressing irradiation of a high beam to an irradiation prohibited object while securing a far field of view by the high beam.
In a vehicle headlamp 10, a plurality of high beam units each individually irradiating light toward a plurality of high beam irradiation areas 24A to 24H arranged side by side in the vehicle width direction in front of the vehicle, A detecting means for detecting whether or not an irradiation prohibition target exists in any of the plurality of high beam irradiation areas 24A to 24H and a plurality of high beam units are turned on or off, and the detection means detects the irradiation prohibition target (for example, an oncoming vehicle) And a control means for turning off the high beam unit for the high beam irradiation area 24 (for example, the high beam irradiation area 24B) where the irradiation prohibition target exists.
[Selection] Figure 2

Description

本発明は、車両用ヘッドランプに関する。   The present invention relates to a vehicle headlamp.

従来、画像取得手段が取得した車両前方の画像情報に基づいて先行車や対向車の存否を検出し、当該検出結果に基づいてヘッドランプの配光を変化させる構成とした車両用ヘッドランプが考案されている（例えば、特許文献１参照）。   Conventionally, a vehicle headlamp has been devised that detects the presence or absence of a preceding vehicle or an oncoming vehicle based on image information in front of the vehicle acquired by the image acquisition means, and changes the light distribution of the headlamp based on the detection result. (For example, refer to Patent Document 1).

この車両用ヘッドランプでは、車両前方に他車両が存在する状態では、ヘッドランプの照射エリアがロービームの照射エリアに自動的に変更されるので、他車両の乗員にグレア（幻惑光）を与えることを抑制できる。また、車両前方に他車両が存在しない状態では、ヘッドランプの照射エリアがハイビームの照射エリアに自動的に変更されるので、遠方の視界を確保することができる。   In this vehicle headlamp, when the other vehicle is present in front of the vehicle, the irradiation area of the headlamp is automatically changed to the irradiation area of the low beam, so that glare (illusion light) is given to the occupant of the other vehicle. Can be suppressed. Further, when there is no other vehicle in front of the vehicle, the irradiation area of the headlamp is automatically changed to the irradiation area of the high beam, so that a far field of view can be secured.

ところで、このような車両用ヘッドランプでは、他車両等（照射禁止対象）へのハイビームの照射の抑制と、ハイビームによる遠方視界の確保とを同時に両立できることが好ましい。
特開２００４−９８９７０号公報 By the way, in such a vehicle headlamp, it is preferable that both suppression of high beam irradiation to other vehicles (irradiation prohibited target) and securing of a far field of view by the high beam can be achieved at the same time.
JP 2004-98970 A

本発明は上記事実を考慮し、ハイビームによって遠方の視界を確保しつつ、照射禁止対象へのハイビームの照射を抑制できる車両用ヘッドランプを得ることが目的である。   An object of the present invention is to obtain a vehicle headlamp that can suppress irradiation of a high beam to an irradiation prohibited object while securing a far field of view with a high beam in consideration of the above facts.

請求項１に記載の発明に係る車両用ヘッドランプは、点灯されることで、車両前方に配列される複数のハイビーム照射エリアのそれぞれへ向けて各々が個別に光を照射する複数のハイビームユニットと、前記複数のハイビーム照射エリアの何れかに照射禁止対象が存在しているか否かを検出する検出手段と、前記複数のハイビームユニットを点灯又は消灯させ、前記検出手段が前記照射禁止対象の存在を検出したときには前記照射禁止対象が存在しているハイビーム照射エリア用のハイビームユニットを消灯する制御手段と、を有することを特徴としている。   The vehicle headlamp according to the first aspect of the present invention includes a plurality of high beam units each individually irradiating light toward each of a plurality of high beam irradiation areas arranged in front of the vehicle by being turned on. Detecting means for detecting whether or not an irradiation prohibited object exists in any of the plurality of high beam irradiation areas; turning on or off the plurality of high beam units; and detecting means for detecting the presence of the irradiation prohibited object. And a control means for turning off the high beam unit for the high beam irradiation area where the irradiation prohibited object exists when detected.

請求項１に記載の車両用ヘッドランプでは、複数のハイビーム照射エリアの何れかに照射禁止対象（先行車や対向車などの他車両及び歩行者）が存在していることを検出手段が検出したときには、照射禁止対象が存在しているハイビーム照射エリア用のハイビームユニットが制御手段によって消灯される。したがって、照射禁止対象へのハイビームの照射を抑制できる。しかも、消灯されたハイビームユニット以外のハイビームユニットによって、他のハイビーム照射エリアを照らすことができるので、遠方の視界を確保することができる。   In the vehicle headlamp according to claim 1, the detection unit detects that there is an irradiation prohibited object (another vehicle such as a preceding vehicle or an oncoming vehicle and a pedestrian) in any of the plurality of high beam irradiation areas. Sometimes, the high beam unit for the high beam irradiation area where the irradiation prohibited object exists is turned off by the control means. Therefore, irradiation of the high beam to the irradiation prohibited object can be suppressed. Moreover, other high beam irradiation areas can be illuminated by the high beam units other than the extinguished high beam unit, so that a far field of view can be secured.

請求項２に記載の発明に係る車両用ヘッドランプは、請求項１に記載の車両用ヘッドランプにおいて、車幅方向内側のハイビーム照射エリアに比し車幅方向外側のハイビーム照射エリアが車幅方向において大きく設定されていることを特徴としている。   A vehicle headlamp according to a second aspect of the present invention is the vehicle headlamp according to the first aspect, wherein the high beam irradiation area on the outer side in the vehicle width direction is higher than the high beam irradiation area on the inner side in the vehicle width direction. It is characterized in that it is set to be large.

請求項２に記載の車両用ヘッドランプでは、遠方から自車両に接近する対向車（照射禁止対象）が、車幅方向内側のハイビーム照射エリアから車幅方向外側のハイビーム照射エリアへ移動する際に、当該対向車の移動速度と、複数のハイビームユニットの点灯・消灯の切換速度とをスムーズに連動させることができる。   In the vehicle headlamp according to claim 2, when an oncoming vehicle (an irradiation prohibited object) that approaches the vehicle from a distance moves from a high beam irradiation area inside the vehicle width direction to a high beam irradiation area outside the vehicle width direction. The moving speed of the oncoming vehicle and the switching speed of turning on / off the plurality of high beam units can be smoothly linked.

請求項３に記載の発明に係る車両用ヘッドランプは、請求項１又は請求項２に記載の車両用ヘッドランプにおいて、点灯されることで、前記複数のハイビーム照射エリアの下方に設定されたロービーム照射エリアへ向けて光を照射するロービームユニットを有すると共に、前記制御手段は、前記複数のハイビーム照射エリアのうち所定数以上のハイビーム照射エリアに照射禁止対象が存在していることを前記検出手段が検出したときには前記複数のハイビームユニットを全て消灯し、前記ロービームユニットを点灯させることを特徴としている。   A vehicle headlamp according to a third aspect of the present invention is the vehicle headlamp according to the first or second aspect, wherein the low-beam is set below the plurality of high beam irradiation areas by being turned on. In addition to having a low beam unit that irradiates light toward the irradiation area, the control means detects that there are irradiation prohibited objects in a predetermined number or more of the plurality of high beam irradiation areas. When detected, all of the plurality of high beam units are turned off, and the low beam unit is turned on.

請求項３に記載の車両用ヘッドランプでは、複数のハイビーム照射エリアのうち所定数以上のハイビーム照射エリアに照射禁止対象が存在していることを検出手段が検出したときには、制御手段が複数のハイビームユニットを全て消灯し、ロービームユニットを点灯させる。したがって、車両前方に多数の照射禁止対象が存在し、複数のハイビームユニットが頻繁に点灯又は消灯されることで、車両乗員や周囲の者に違和感を与えることを抑制できる。   In the vehicle headlamp according to claim 3, when the detection unit detects that there are irradiation prohibited objects in a predetermined number or more of the plurality of high beam irradiation areas, the control unit detects the plurality of high beam irradiation areas. Turn off all units and turn on the low beam unit. Therefore, there are a large number of irradiation-prohibited objects in front of the vehicle, and the plurality of high beam units are frequently turned on or off, so that it is possible to suppress the vehicle occupant and surrounding people from feeling uncomfortable.

請求項４に記載の発明に係る車両用ヘッドランプは、請求項１乃至請求項３の何れか１項に記載の車両用ヘッドランプにおいて、前記制御手段は、前記ハイビームユニットを消灯させる際に前記ハイビームユニットの照射光の輝度を徐々に低下させると共に、前記ハイビームユニットを点灯させる際に前記ハイビームユニットの照射光の輝度を徐々に増加させることを特徴としている。   The vehicle headlamp according to a fourth aspect of the present invention is the vehicle headlamp according to any one of the first to third aspects, wherein the control means turns off the high beam unit when the high beam unit is turned off. The brightness of the irradiation light of the high beam unit is gradually decreased, and the brightness of the irradiation light of the high beam unit is gradually increased when the high beam unit is turned on.

請求項４に記載の車両用ヘッドランプでは、複数のハイビームユニットが点灯又は消灯される際に、複数のハイビームユニットの照射光の輝度が徐々に変化されるので、複数のハイビームユニットの点灯・消灯によって車両乗員や周囲の者に違和感を与えることを抑制できる。   In the vehicle headlamp according to claim 4, when the plurality of high beam units are turned on or off, the brightness of the irradiation light of the plurality of high beam units is gradually changed. Therefore, it is possible to prevent the vehicle occupant and the surrounding people from feeling uncomfortable.

請求項５に記載の発明に係る車両用ヘッドランプは、請求項１乃至請求項４の何れか１項に記載の車両用ヘッドランプにおいて、前記複数のハイビームユニットの照射光は、隣接同士で重合すると共に、前記複数のハイビームユニットの照射光の輝度は、前記重合部分で低減されていることを特徴としている。   A vehicle headlamp according to a fifth aspect of the present invention is the vehicle headlamp according to any one of the first to fourth aspects, wherein the irradiation light of the plurality of high beam units is superposed adjacent to each other. In addition, the brightness of the irradiation light of the plurality of high beam units is reduced in the overlapping portion.

請求項５に記載の車両用ヘッドランプでは、複数のハイビームユニットの照射光が隣接同士で重合しており、しかもこの重合部分で複数のハイビームユニットの輝度が低減されているので、複数のハイビーム照射エリアに照射される照射光の均一性が向上すると共に、複数のハイビームユニットの点灯・消灯切換時に車両乗員に違和感を与えることを抑制できる。   In the vehicle headlamp according to claim 5, the irradiation light of the plurality of high beam units is superposed adjacent to each other, and the luminance of the plurality of high beam units is reduced at the superposed portion. It is possible to improve the uniformity of the irradiation light applied to the area and to prevent the vehicle occupant from feeling uncomfortable when switching on / off the plurality of high beam units.

以上説明したように、本発明に係る車両用ヘッドランプでは、ハイビームによって遠方の視界を確保しつつ、照射禁止対象へのハイビームの照射を抑制できる。   As described above, in the vehicle headlamp according to the present invention, it is possible to suppress irradiation of the high beam to the irradiation prohibited object while securing a far field of view with the high beam.

図１には本発明の実施形態に係る車両用ヘッドランプ１０の構成が斜視図にて示されている。なお、図中矢印ＦＲは車両前方向を示し、矢印ＵＰは車両上方向を示し、矢印ＩＮは車幅内側方向を示している。   FIG. 1 is a perspective view showing the configuration of a vehicle headlamp 10 according to an embodiment of the present invention. In the figure, an arrow FR indicates the front direction of the vehicle, an arrow UP indicates the upward direction of the vehicle, and an arrow IN indicates the inner side of the vehicle width.

車両用ヘッドランプ１０は、図示しない車体に取り付けられるランプハウジング１２を有している。ランプハウジング１２は前方が開口した箱状であり、このランプハウジング１２の車両前方にはランプアウターレンズ１４が取り付けられている。   The vehicle headlamp 10 has a lamp housing 12 attached to a vehicle body (not shown). The lamp housing 12 has a box shape with the front opening, and a lamp outer lens 14 is attached to the front of the lamp housing 12 in the vehicle.

ランプハウジング１２の内部には、ロービームユニットとしてのハロゲンランプ１６、１８が設けられている。ハロゲンランプ１６はランプハウジング１２内の下側に配置されており、ハロゲンランプ１８はランプハウジング１２内の車幅方向内側に配置されている。これらのハロゲンランプ１６、１８は、点灯されることで、車両前方に設定されたロービーム照射エリア２０（図２参照）へ向けて光を照射する構成となっている。なお、図２は、後述する画像取得装置３８によって取得される車両前方の画像３９である。この図２では、道路のセンターラインに符号２１を付与し、車道と路側帯とを区分する白線に符号２３を付与し、対向車に符号２５を付与し、歩行者に符号２７を付与してある。また、この図２では、ロービーム照射エリア２０の面積が紙面左側（路側帯側）で拡大されているが、これは左側通行の場合であり、右側通行の場合には左右が逆になる。   Inside the lamp housing 12, halogen lamps 16 and 18 as low beam units are provided. The halogen lamp 16 is disposed below the lamp housing 12, and the halogen lamp 18 is disposed inside the lamp housing 12 in the vehicle width direction. These halogen lamps 16 and 18 are configured to irradiate light toward the low beam irradiation area 20 (see FIG. 2) set in front of the vehicle by being turned on. Note that FIG. 2 is an image 39 in front of the vehicle acquired by an image acquisition device 38 to be described later. In FIG. 2, reference numeral 21 is assigned to the center line of the road, reference numeral 23 is assigned to the white line that separates the roadway from the roadside belt, reference numeral 25 is assigned to the oncoming vehicle, and reference numeral 27 is assigned to the pedestrian. is there. In FIG. 2, the area of the low beam irradiation area 20 is enlarged on the left side of the paper (on the roadside belt side), but this is the case of left-hand traffic, and the right and left are reversed in the case of right-hand traffic.

さらに、ランプハウジング１２の内部には、ハイビームユニットとしての複数（本実施形態では８個）の白色ＬＥＤランプ２２Ａ〜２２Ｈが設けられている。これらの白色ＬＥＤランプ２２Ａ〜２２Ｈは、点灯されることで、ロービーム照射エリア２０の上方に車幅方向に並んで配列された複数のハイビーム照射エリア２４Ａ〜２４Ｈ（図２参照）のそれぞれへ向けて各々が個別に光を照射する構成となっている。すなわち、白色ＬＥＤランプ２２Ａはハイビーム照射エリア２４Ａへ、白色ＬＥＤランプ２２Ｂはハイビーム照射エリア２４Ｂへ、白色ＬＥＤランプ２２Ｃはハイビーム照射エリア２４Ｃへ、白色ＬＥＤランプ２２Ｄはハイビーム照射エリア２４Ｄへ、白色ＬＥＤランプ２２Ｅはハイビーム照射エリア２４Ｅへ、白色ＬＥＤランプ２２Ｆはハイビーム照射エリア２４Ｆへ、白色ＬＥＤランプ２２Ｇはハイビーム照射エリア２４Ｇへ、白色ＬＥＤランプ２２Ｈはハイビーム照射エリア２４Ｈへ向けて、それぞれが光を照射する構成となっている。   Further, a plurality of (eight in the present embodiment) white LED lamps 22 </ b> A to 22 </ b> H as high beam units are provided inside the lamp housing 12. When these white LED lamps 22A to 22H are turned on, each of the white LED lamps 22A to 22H is directed toward each of a plurality of high beam irradiation areas 24A to 24H (see FIG. 2) arranged above the low beam irradiation area 20 in the vehicle width direction. Each is configured to irradiate light individually. That is, the white LED lamp 22A goes to the high beam irradiation area 24A, the white LED lamp 22B goes to the high beam irradiation area 24B, the white LED lamp 22C goes to the high beam irradiation area 24C, the white LED lamp 22D goes to the high beam irradiation area 24D, and the white LED lamp 22E. Is configured to irradiate light to the high beam irradiation area 24E, the white LED lamp 22F to the high beam irradiation area 24F, the white LED lamp 22G to the high beam irradiation area 24G, and the white LED lamp 22H to the high beam irradiation area 24H. It has become.

また、図２に示されるように、複数のハイビーム照射エリア２４Ａ〜２４Ｈの車幅方向に沿った各照射範囲は、車幅方向内側のハイビーム照射エリア２４Ａ（２４Ｅ）から車幅方向外側のハイビーム照射エリア２４Ｄ（２４Ｈ）へ向かうに従い段階的に大きくなるように設定されている。すなわち、ハイビーム照射エリア２４Ａ、２４Ｅに比し、ハイビーム照射エリア２４Ｂ、２４Ｆが車幅方向において大きく設定されている（Ｌ１＜Ｌ２）。また、ハイビーム照射エリア２４Ｂ、２４Ｆに比し、ハイビーム照射エリア２４Ｃ、２４Ｇが車幅方向において大きく設定されており（Ｌ２＜Ｌ３）、ハイビーム照射エリア２４Ｃ、２４Ｇに比し、ハイビーム照射エリア２４Ｄ、２４Ｈが車幅方向において大きく設定されている（Ｌ３＜Ｌ４）。   Further, as shown in FIG. 2, the irradiation ranges along the vehicle width direction of the plurality of high beam irradiation areas 24 </ b> A to 24 </ b> H are the high beam irradiation outside the vehicle width direction from the high beam irradiation area 24 </ b> A (24 </ b> E) inside the vehicle width direction. It is set to increase stepwise as it goes to area 24D (24H). That is, the high beam irradiation areas 24B and 24F are set larger in the vehicle width direction than the high beam irradiation areas 24A and 24E (L1 <L2). Further, the high beam irradiation areas 24C and 24G are set larger in the vehicle width direction than the high beam irradiation areas 24B and 24F (L2 <L3), and the high beam irradiation areas 24D and 24H are compared with the high beam irradiation areas 24C and 24G. Is set large in the vehicle width direction (L3 <L4).

さらに、図３に示されるように、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈの照射光は、隣接同士で車幅方向に重合するようになっている（図３のハッチング部参照）。しかも、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈの照射光の輝度は、車幅方向中央部が明るく、車幅方向両側部が暗くなるように設定されており、上記重合部分で明るさが低減される構成となっている。   Furthermore, as FIG. 3 shows, the irradiation light of several white LED lamp 22A-22H superposes | stacks in the vehicle width direction by adjacent (refer hatching part of FIG. 3). In addition, the brightness of the light emitted from the plurality of white LED lamps 22A to 22H is set so that the central portion in the vehicle width direction is bright and the both side portions in the vehicle width direction are dark, and the brightness is reduced in the overlapping portion. It has a configuration.

また、図４に示されるように、上述したハロゲンランプ１６、１８及び白色ＬＥＤランプ２２Ａ〜２２Ｈは、制御手段を構成する切換・調光器２６に接続されており、この切換・調光器２６には、制御手段を構成するコントロールユニット２８と電源３０とが接続されている。そして、コントロールユニット２８には、車室内に設けられた点灯スイッチ３２及びＨＩ／ＬＯ切換スイッチ３４が接続されている。   As shown in FIG. 4, the halogen lamps 16 and 18 and the white LED lamps 22 </ b> A to 22 </ b> H described above are connected to a switching / dimming device 26 that constitutes a control unit. Are connected to a power supply 30 and a control unit 28 constituting the control means. The control unit 28 is connected to a lighting switch 32 and an HI / LO switch 34 provided in the vehicle interior.

コントロールユニット２８及び切換・調光器２６は、ＨＩ／ＬＯ切換スイッチ３４がＬＯ側に操作された状態で点灯スイッチ３２がＯＮにされるとハロゲンランプ１６、１８を点灯させる。また、コントロールユニット２８及び切換・調光器２６は、ＨＩ／ＬＯ切換スイッチ３４がＨＩ側に操作された状態で点灯スイッチ３２がＯＮにされると、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈを点灯させる。   When the lighting switch 32 is turned on in a state where the HI / LO changeover switch 34 is operated to the LO side, the control unit 28 and the changeover / dimming device 26 turn on the halogen lamps 16 and 18. Further, when the lighting switch 32 is turned on with the HI / LO switch 34 being operated to the HI side, the control unit 28 and the switching / dimming device 26 light the plurality of white LED lamps 22A to 22H. .

さらに、コントロールユニット２８には、画像処理装置３６を介して画像取得装置３８（共に検出手段）が接続されている。画像取得装置３８は、自車両前方の画像を取得することができるものであればよく、例えばＣＣＤ（ｃｈａｒｇｅ ｃｏｕｐＬＥＤランプ ｄｅｖｉｃｅ）等の固体撮像素子を使用した所謂ＣＣＤカメラ等を使用することができる。   Further, an image acquisition device 38 (both detection means) is connected to the control unit 28 via an image processing device 36. The image acquisition device 38 may be any device as long as it can acquire an image ahead of the host vehicle. For example, a so-called CCD camera using a solid-state image sensor such as a CCD (charge couple LED lamp device) can be used.

画像処理装置３６は、画像取得装置３８によって取得した画像から、照射禁止対象（先行車や対向車などの他の車両、及び歩行者）の存否の検出に必要な情報を取り出して加工する画像処理手段４０と、画像処理手段４０から得られた画像情報、及び図示しないレーザレーダやミリ波レーダ等のセンサを利用して獲得した距離情報に基づいて照射禁止対象の存否を検出する照射禁止対象検出手段４２とを備える。そして、上記画像処理装置３６の照射禁止対象検出手段４２の検出結果が上記コントロールユニット２８に出力され、コントロールユニット２８及び切換・調光器２６がこの検出結果に基づいてハロゲンランプ１６、１８及び白色ＬＥＤランプ２２Ａ〜２２Ｈの点灯・消灯の切換及び調光を行う構成となっている。   The image processing device 36 extracts and processes information necessary for detecting the presence / absence of an object to be irradiated (another vehicle such as a preceding vehicle or an oncoming vehicle and a pedestrian) from the image acquired by the image acquisition device 38. Irradiation prohibited object detection for detecting presence / absence of irradiation prohibited object based on means 40, image information obtained from image processing means 40, and distance information obtained by using a sensor such as a laser radar or a millimeter wave radar (not shown). Means 42. Then, the detection result of the irradiation prohibition target detection means 42 of the image processing device 36 is output to the control unit 28, and the control unit 28 and the switch / light control device 26 are controlled based on the detection result by the halogen lamps 16, 18 and white. The LED lamps 22A to 22H are turned on / off and dimmed.

具体的には、コントロールユニット２８及び切換・調光器２６は、ＨＩ／ＬＯ切換スイッチ３４がＨＩ側に操作され且つ点灯スイッチ３２がＯＮにされた状態（ハイビームの状態）で、照射禁止対象検出手段４２が、複数のハイビーム照射エリア２４Ａ〜２４Ｈの何れかに照射禁止対象が存在していることを検出したときには、照射禁止対象が存在しているハイビーム照射エリア２４用の白色ＬＥＤランプ２２を消灯する。すなわち、例えば図２に示されるように、ハイビーム照射エリア２４Ｂに照射禁止対象としての対向車２５が存在しているときには、コントロールユニット２８及び切換・調光器２６は、ハイビーム照射エリア２４Ｂ用の白色ＬＥＤランプ２２Ｂを消灯する。また例えば、ハイビーム照射エリア２４Ｆに照射禁止対象としての歩行者２７が存在しているときには、コントロールユニット２８及び切換・調光器２６はハイビーム照射エリア２４Ｆ用の白色ＬＥＤランプ２２Ｆを消灯する。なお、コントロールユニット２８及び切換・調光器２６は、照射禁止対象の存在が検出されなくなったハイビーム照射エリア２４に対しては、当該ハイビーム照射エリア２４用の白色ＬＥＤランプ２２を再び点灯させる構成となっている。   Specifically, the control unit 28 and the switching / dimming device 26 detect the irradiation prohibited object when the HI / LO switch 34 is operated to the HI side and the lighting switch 32 is turned on (high beam state). When the means 42 detects that an irradiation prohibited object exists in any of the plurality of high beam irradiation areas 24A to 24H, the white LED lamp 22 for the high beam irradiation area 24 where the irradiation prohibited object exists is turned off. To do. That is, for example, as shown in FIG. 2, when the oncoming vehicle 25 as an object to be prohibited is present in the high beam irradiation area 24B, the control unit 28 and the switching / dimming device 26 are white for the high beam irradiation area 24B. The LED lamp 22B is turned off. Further, for example, when the pedestrian 27 as an irradiation prohibition target exists in the high beam irradiation area 24F, the control unit 28 and the switching / dimming device 26 turn off the white LED lamp 22F for the high beam irradiation area 24F. In addition, the control unit 28 and the switching / dimming device 26 are configured to turn on the white LED lamp 22 for the high beam irradiation area 24 again for the high beam irradiation area 24 in which the existence of the irradiation prohibited object is not detected. It has become.

さらに、コントロールユニット２８及び切換・調光器２６は、複数のハイビーム照射エリア２４Ａ〜２４Ｈのうち所定数（例えば３つ）以上に照射禁止対象が存在しているときには、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈを全て消灯すると共に、ハロゲンランプ１６、１８を点灯させる（ロービームに切り換える）構成となっている。   Further, the control unit 28 and the switching / dimming device 26 have a plurality of white LED lamps 22 </ b> A to 22 </ b> A when there are irradiation prohibited objects in a predetermined number (for example, three) or more among the plurality of high beam irradiation areas 24 </ b> A to 24 </ b> H. All the lamps 22H are turned off, and the halogen lamps 16 and 18 are turned on (switched to a low beam).

また、切換・調光器２６は、白色ＬＥＤランプ２２Ａ〜２２Ｈを消灯させる際には白色ＬＥＤランプ２２Ａ〜２２Ｈの照射光の輝度を徐々に低下させると共に、白色ＬＥＤランプ２２Ａ〜２２Ｈを点灯させる際には白色ＬＥＤランプ２２Ａ〜２２Ｈの照射光の輝度を徐々に増加させる構成となっている。   Further, when the white LED lamps 22A to 22H are turned off, the switching / dimming device 26 gradually decreases the luminance of the irradiation light of the white LED lamps 22A to 22H and turns on the white LED lamps 22A to 22H. Is configured to gradually increase the luminance of the irradiation light of the white LED lamps 22A to 22H.

次に、本実施形態の作用について説明する。   Next, the operation of this embodiment will be described.

上記構成の車両用ヘッドランプ１０では、ＨＩ／ＬＯ切換スイッチ３４がＨＩ側に操作され且つ点灯スイッチ３２がＯＮにされた状態（ハイビームの状態）で、画像取得装置３８及び画像処理装置３６が、複数のハイビーム照射エリア２４Ａ〜２４Ｈの何れか（例えば、ハイビーム照射エリア２４Ｂ）に照射禁止対象（先行車や対向車などの他の車両、及び歩行者）が存在していることを検出したときには、コントロールユニット２８及び切換・調光器２６は、照射禁止対象が存在しているハイビーム照射エリア２４Ｂ用の白色ＬＥＤランプ２２Ｂを消灯する。したがって、照射禁止対象へのハイビームの照射を抑制できる。しかも、消灯された白色ＬＥＤランプ２２Ｂ以外の白色ＬＥＤランプ２２Ａ、２２Ｃ〜２２Ｈによって、他のハイビーム照射エリア２４Ａ、２４Ｃ〜２４Ｈを照らすことができるので、遠方の視界を確保することができる。   In the vehicle headlamp 10 having the above configuration, the image acquisition device 38 and the image processing device 36 are in a state where the HI / LO switch 34 is operated to the HI side and the lighting switch 32 is turned on (high beam state). When it is detected that any of the plurality of high beam irradiation areas 24A to 24H (for example, the high beam irradiation area 24B) is subject to irradiation prohibition (another vehicle such as a preceding vehicle or an oncoming vehicle, and a pedestrian) The control unit 28 and the switching / dimming device 26 turn off the white LED lamp 22B for the high beam irradiation area 24B where the irradiation prohibited target exists. Therefore, irradiation of the high beam to the irradiation prohibited object can be suppressed. In addition, since the other high beam irradiation areas 24A and 24C to 24H can be illuminated by the white LED lamps 22A and 22C to 22H other than the white LED lamp 22B that has been turned off, it is possible to secure a far field of view.

また、本車両用ヘッドランプ１０では、複数のハイビーム照射エリア２４Ａ〜２４Ｈの車幅方向に沿った各照射範囲は、車幅方向内側のハイビーム照射エリア２４Ａ（２４Ｅ）から車幅方向外側のハイビーム照射エリア２４Ｄ（２４Ｈ）へ向かうに従い段階的に大きくなるように設定されている。このため、遠方から自車両に接近する対向車２５（図５参照）が、車幅方向内側のハイビーム照射エリア２４Ａから車幅方向外側のハイビーム照射エリア２４Ｄへ向けて移動する際に、当該対向車２５の移動速度と、複数の白色ＬＥＤランプ２２Ａ〜２２Ｄの点灯・消灯の切換速度とをスムーズに連動させることができる。   Further, in the vehicle headlamp 10, the irradiation ranges along the vehicle width direction of the plurality of high beam irradiation areas 24A to 24H are high beam irradiation on the outer side in the vehicle width direction from the high beam irradiation area 24A (24E) on the inner side in the vehicle width direction. It is set to increase stepwise as it goes to area 24D (24H). Therefore, when the oncoming vehicle 25 (see FIG. 5) approaching the host vehicle from a distance moves from the high beam irradiation area 24A on the inner side in the vehicle width direction toward the high beam irradiation area 24D on the outer side in the vehicle width direction, the oncoming vehicle The moving speed of 25 and the switching speed of turning on / off the plurality of white LED lamps 22A to 22D can be smoothly linked.

さらに、本車両用ヘッドランプ１０では、複数のハイビーム照射エリア２４Ａ〜２４Ｈのうち所定数（例えば３つ）以上のハイビーム照射エリア２４に照射禁止対象が存在しているとき（例えば、図６に示されるようにハイビーム照射エリア２４Ａ〜２４Ｃに対向車２５が存在しているとき）には、コントロールユニット２８及び切換・調光器２６が、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈを全て消灯し、ハロゲンランプ１６、１８を点灯させる。したがって、車両前方に多数の照射禁止対象が存在し、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈが頻繁に点灯又は消灯されることで、車両乗員に違和感を与えることを抑制できる。   Furthermore, in the vehicle headlamp 10, when there are irradiation prohibited objects in a predetermined number (for example, three) or more of the plurality of high beam irradiation areas 24A to 24H (for example, as shown in FIG. 6). When the oncoming vehicle 25 is present in the high beam irradiation areas 24A to 24C), the control unit 28 and the switching / dimming device 26 turn off all the white LED lamps 22A to 22H, and the halogen lamp 16 and 18 are turned on. Therefore, there are a large number of irradiation-prohibited objects in front of the vehicle, and the white LED lamps 22A to 22H are frequently turned on or off, so that it is possible to prevent the vehicle occupant from feeling uncomfortable.

またさらに、本車両用ヘッドランプ１０では、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈが点灯又は消灯される際には、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈの照射光の輝度が徐々に変化されるので、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈの点灯・消灯によって車両乗員に違和感を与えることを抑制できる。   Furthermore, in the vehicle headlamp 10, when the plurality of white LED lamps 22A to 22H are turned on or off, the brightness of the irradiation light of the plurality of white LED lamps 22A to 22H is gradually changed. It is possible to prevent the vehicle occupant from feeling uncomfortable by turning on / off the plurality of white LED lamps 22A to 22H.

また、本車両用ヘッドランプ１０では、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈの照射光が隣接同士で車幅方向に重合しており、しかもこの重合部分で複数の白色ＬＥＤランプ２２Ａ〜２２Ｄの輝度が低減されているので、複数のハイビーム照射エリア２４Ａ〜２２Ｈに照射される照射光の均一性が向上すると共に、複数の白色ＬＥＤランプ２２Ａ〜２２Ｈの点灯・消灯切換時に車両乗員に違和感を与えることを抑制できる。   Further, in the vehicle headlamp 10, the irradiation light of the plurality of white LED lamps 22A to 22H is superposed in the vehicle width direction adjacent to each other, and the luminance of the plurality of white LED lamps 22A to 22D is increased in this superposed portion. As a result, the uniformity of the irradiation light irradiated to the plurality of high beam irradiation areas 24A to 22H is improved, and the vehicle occupant feels uncomfortable when switching on / off the plurality of white LED lamps 22A to 22H. Can be suppressed.

なお、上記実施形態に係る車両用ヘッドランプ１０では、ロービームユニットとしての２つのハロゲンランプ１６、１８と、ハイビームユニットとしての８つの白色ＬＥＤランプ２２Ａ〜２２Ｈと、を有する構成としたが、ロービームユニット及びハイビームユニットの数は適宜設定変更することができるものであり、ロービーム照射エリア及びハイビーム照射エリアの数及び形状も上記実施形態に限定されるものではない。   Note that the vehicle headlamp 10 according to the above embodiment includes the two halogen lamps 16 and 18 as the low beam unit and the eight white LED lamps 22A to 22H as the high beam unit. The number of high beam units and the number of high beam units can be appropriately changed, and the numbers and shapes of the low beam irradiation areas and the high beam irradiation areas are not limited to the above embodiment.

また、上記実施形態に係る車両用ヘッドランプ１０では、ロービームユニットとしてハロゲンランプ１６、１８を適用して構成したが、本発明はこれに限らず、ロービームユニットとしては、白色ＬＥＤランプ（発光ダイオード）などの他のユニットを適用してもよい。   In the vehicle headlamp 10 according to the above embodiment, the halogen lamps 16 and 18 are applied as the low beam unit. However, the present invention is not limited to this, and the low beam unit may be a white LED lamp (light emitting diode). Other units such as may be applied.

さらに、上記実施形態では、ハイビームユニットとして白色ＬＥＤランプ２２Ａ〜２２Ｈを適用して構成したが、本発明はこれに限らず、ハイビームユニットとしては指向性を有するユニットであれば適用することができる。   Furthermore, in the said embodiment, although white LED lamp 22A-22H was applied and comprised as a high beam unit, this invention is not restricted to this, As long as it has a directivity as a high beam unit, it is applicable.

本発明の実施形態に係る車両用ヘッドランプの主要部の構成を示す斜視図である。It is a perspective view which shows the structure of the principal part of the headlamp for vehicles which concerns on embodiment of this invention. 本発明の実施形態に係る車両用ヘッドランプを構成する画像取得装置によって取得された車両前方の画像を示す図である。It is a figure which shows the image ahead of the vehicle acquired by the image acquisition apparatus which comprises the headlamp for vehicles which concerns on embodiment of this invention. 本発明の実施形態に係る車両用ヘッドランプを構成する複数の白色ＬＥＤランプの照射光が隣接同士で車幅方向に重合している状態を説明するための図である。It is a figure for demonstrating the state which the irradiation light of the several white LED lamp which comprises the vehicle headlamp which concerns on embodiment of this invention has superposed | stacked adjacent in the vehicle width direction. 本発明の実施形態に係る車両用ヘッドランプの制御手段を含む周辺の構成を示す図である。It is a figure which shows the structure of the periphery containing the control means of the headlamp for vehicles which concerns on embodiment of this invention. 本発明の実施形態に係る車両用ヘッドランプを構成する画像取得装置によって取得された車両前方の画像を示し、遠方から自車両に接近する対向車が車幅方向内側のハイビーム照射エリアから車幅方向外側のハイビーム照射エリアへ移動するときの様子を説明するための図である。The oncoming vehicle which approaches the own vehicle from a distance is shown from the high beam irradiation area inside the vehicle width direction in the vehicle width direction, showing an image ahead of the vehicle acquired by the image acquisition device constituting the vehicle headlamp according to the embodiment of the present invention. It is a figure for demonstrating a mode when moving to an outer high beam irradiation area. 本発明の実施形態に係る車両用ヘッドランプを構成する画像取得装置によって取得された車両前方の画像を示し、３つのハイビーム照射エリア内に対向車が存在している状態を示す図である。It is a figure which shows the image ahead of the vehicle acquired by the image acquisition apparatus which comprises the vehicle headlamp which concerns on embodiment of this invention, and shows the state where the oncoming vehicle exists in three high beam irradiation areas.

符号の説明Explanation of symbols

１０ 車両用ヘッドランプ
１６ ハロゲンランプ（ロービームユニット）
１８ ハロゲンランプ（ロービームユニット）
２０ ロービーム照射エリア
２２Ａ〜２２Ｈ 白色ＬＥＤランプ（ハイビームユニット）
２４Ａ〜２４Ｈ ハイビーム照射エリア
２６ 切換・調光器（制御手段）
２８ コントロールユニット（制御手段）
３６ 画像処理装置（検出手段）
３８ 画像取得装置（検出手段） 10 Vehicle headlamps 16 Halogen lamp (low beam unit)
18 Halogen lamp (low beam unit)
20 Low beam irradiation area 22A-22H White LED lamp (high beam unit)
24A-24H High Beam Irradiation Area 26 Switch / Dimmer (Control Unit)
28 Control unit (control means)
36 Image processing device (detection means)
38 Image acquisition device (detection means)

Claims (5)

点灯されることで、車両前方に配列される複数のハイビーム照射エリアのそれぞれへ向けて各々が個別に光を照射する複数のハイビームユニットと、
前記複数のハイビーム照射エリアの何れかに照射禁止対象が存在しているか否かを検出する検出手段と、
前記複数のハイビームユニットを点灯又は消灯させ、前記検出手段が前記照射禁止対象の存在を検出したときには前記照射禁止対象が存在しているハイビーム照射エリア用のハイビームユニットを消灯する制御手段と、
を有する車両用ヘッドランプ。 By being lit, a plurality of high beam units each individually irradiating light toward each of a plurality of high beam irradiation areas arranged in front of the vehicle,
Detecting means for detecting whether or not an irradiation prohibited object exists in any of the plurality of high beam irradiation areas;
Control means for turning on or off the plurality of high beam units, and turning off the high beam unit for the high beam irradiation area where the irradiation prohibited object exists when the detection means detects the presence of the irradiation prohibited object;
Vehicular headlamp. 車幅方向内側のハイビーム照射エリアに比し車幅方向外側のハイビーム照射エリアが車幅方向において大きく設定されていることを特徴とする請求項１に記載の車両用ヘッドランプ。   2. The vehicle headlamp according to claim 1, wherein a high beam irradiation area on the outer side in the vehicle width direction is set larger in the vehicle width direction than a high beam irradiation area on the inner side in the vehicle width direction. 点灯されることで、前記複数のハイビーム照射エリアの下方に設定されたロービーム照射エリアへ向けて光を照射するロービームユニットを有すると共に、前記制御手段は、前記複数のハイビーム照射エリアのうち所定数以上のハイビーム照射エリアに照射禁止対象が存在していることを前記検出手段が検出したときには前記複数のハイビームユニットを全て消灯し、前記ロービームユニットを点灯させることを特徴とする請求項１又は請求項２に記載の車両用ヘッドランプ。   It has a low beam unit that emits light toward the low beam irradiation area set below the plurality of high beam irradiation areas by being turned on, and the control means is a predetermined number or more of the plurality of high beam irradiation areas 3. When the detection means detects that there is an irradiation prohibited object in the high beam irradiation area, all of the plurality of high beam units are turned off and the low beam unit is turned on. The headlamp for vehicles as described in. 前記制御手段は、前記ハイビームユニットを消灯させる際に前記ハイビームユニットの照射光の輝度を徐々に低下させると共に、前記ハイビームユニットを点灯させる際に前記ハイビームユニットの照射光の輝度を徐々に増加させることを特徴とする請求項１乃至請求項３の何れか１項に記載の車両用ヘッドランプ。   The control means gradually decreases the brightness of the irradiation light of the high beam unit when turning off the high beam unit, and gradually increases the brightness of the irradiation light of the high beam unit when turning on the high beam unit. The vehicle headlamp according to any one of claims 1 to 3, wherein the vehicle headlamp is characterized in that: 前記複数のハイビームユニットの照射光は、隣接同士で重合すると共に、前記複数のハイビームユニットの照射光の輝度は、前記重合部分で低減されていることを特徴とする請求項１乃至請求項４の何れか１項に記載の車両用ヘッドランプ。   The irradiation light of the plurality of high beam units is superposed adjacent to each other, and the luminance of the irradiation light of the plurality of high beam units is reduced at the superposition portion. The vehicle headlamp according to any one of the preceding claims.
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