JP4333453B2 - Vehicle lighting - Google Patents

Vehicle lighting Download PDF

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JP4333453B2
JP4333453B2 JP2004114460A JP2004114460A JP4333453B2 JP 4333453 B2 JP4333453 B2 JP 4333453B2 JP 2004114460 A JP2004114460 A JP 2004114460A JP 2004114460 A JP2004114460 A JP 2004114460A JP 4333453 B2 JP4333453 B2 JP 4333453B2
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speed
vehicle
light distribution
lamp
acceleration
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JP2005297685A (en
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泰宏 大久保
慎吾 早岐
英治 鈴木
智博 岡本
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Ichikoh Industries Ltd
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Description

本発明は、対向車線側の配光範囲を狭くしたすれ違い配光用灯具と、高速走行時に配光範囲を車両正面方向へ広げることにより遠方視界を高めた高速配光用灯具と、車両の走行速度を検出する車両速度検出手段と、該車両速度検出手段により検出された速度が基準速度以上である場合に、前記高速配光用灯具を点灯させる制御手段とを備えた車両用灯具に関する。   The present invention relates to a passing light distribution lamp in which the light distribution range on the opposite lane side is narrowed, a high-speed light distribution lamp in which a far field of view is enhanced by widening the light distribution range toward the front of the vehicle during high-speed traveling, and a vehicle traveling The present invention relates to a vehicle lamp comprising vehicle speed detection means for detecting a speed and control means for lighting the high-speed light distribution lamp when the speed detected by the vehicle speed detection means is equal to or higher than a reference speed.

今日では、一般的なすれ違い配光用灯具に加えて、配光範囲を車両前方まで拡大させて遠方視界を良好にした高速配光用灯具が用いられている（例えば、特許文献１参照）。この高速配光用灯具は、高速走行時における遠方視界確保を目的としているため、一般的に車両速度が基準速度に達した場合に追加点灯するように設定されている。
特開平７−２４６８７３号公報 Nowadays, in addition to a general passing light distribution lamp, a high-speed light distribution lamp that uses a wide light distribution range to the front of the vehicle to improve the far field of view is used (for example, see Patent Document 1). Since this high-speed light distribution lamp is intended to secure a far field of view during high-speed traveling, it is generally set to be additionally lit when the vehicle speed reaches a reference speed.
JP-A-7-246873

しかしながら、車両速度が基準速度に達したときに高速配光用灯具が点灯する車両用灯具において基準速度の設定が低すぎると、車両速度が容易に基準速度に到達してしまうので、高速配光用灯具の点灯・消灯が頻繁に発生してしまい、運転者に煩わしさを与えてしまうおそれがあった。また頻繁な点灯・消灯は高速配光用灯具のバルブ寿命にも悪影響を与えるという問題があった。   However, if the reference speed is set too low in the vehicular lamp that turns on the high-speed light distribution lamp when the vehicle speed reaches the reference speed, the vehicle speed easily reaches the reference speed. There is a risk that the lighting of the lamp will frequently be turned on and off, causing trouble for the driver. In addition, frequent lighting / extinguishing has a problem of adversely affecting the bulb life of high-speed light distribution lamps.

一方で、基準速度の設定を高くしすぎると、なかなか高速配光用灯具が点灯しないので遠方視界を所望のタイミングで確保することができず、運転者に切り換わりタイミングの遅れ感を与えてしまうおそれがあるという問題があった。   On the other hand, if the reference speed is set too high, the lamp for high-speed light distribution does not light up easily, so it is impossible to secure a far field of view at a desired timing, and the driver is switched to give a sense of delay in timing. There was a problem of fear.

本発明は上記の問題に鑑みてなされたものであり、運転者の所望のタイミングで高速配光用灯具が点灯する車両用灯を提供することを課題とする。   This invention is made | formed in view of said problem, and makes it a subject to provide the vehicle lamp which the lamp for high-speed light distribution lights at a driver | operator's desired timing.

上記課題を解決するために、請求項１に記載の発明は、対向車線側の配光範囲を狭くしたすれ違い配光用灯具と、高速走行時に配光範囲を車両正面方向へ広げることにより遠方視界を高めた高速配光用灯具と、車両の速度を検出する車両速度検出手段と、該車両速度検出手段により検出された速度が基準速度以上である場合に、前記高速配光用灯具を点灯させる制御手段とを備えた車両用灯具において、前記制御手段は、前記車両速度検出手段により検出された速度に基づいて車両の加速度を算出するとともに、算出された加速度に応じて前記基準速度の値を変更するものであって、算出された前記加速度が低い値を維持する場合には前記基準速度の値を高い値に変更し、かつ算出された前記加速度が低い値を維持した後に、前記車両速度検出手段により検出された速度が設定変更される前の基準速度近傍の値を維持する状態となった場合には、前記基準速度を設定変更がなされる前の基準速度の値よりも低い値に変更することを特徴とする。 In order to solve the above-mentioned problem, the invention according to claim 1 is directed to a far light distribution lamp having a narrow light distribution range on the opposite lane side, and a far field of view by expanding the light distribution range toward the front of the vehicle during high-speed traveling. A high-speed light distribution lamp having a high speed, vehicle speed detection means for detecting the speed of the vehicle, and lighting the high-speed light distribution lamp when the speed detected by the vehicle speed detection means is equal to or higher than a reference speed. In the vehicular lamp provided with the control means, the control means calculates the acceleration of the vehicle based on the speed detected by the vehicle speed detection means, and calculates the value of the reference speed according to the calculated acceleration. When the calculated acceleration is maintained at a low value, the reference speed value is changed to a high value, and the calculated acceleration is maintained at a low value, and then the vehicle speed is changed. Inspection When the speed detected by the means maintains a value near the reference speed before the setting is changed, the reference speed is changed to a value lower than the reference speed before the setting is changed. characterized in that it.

本発明に係る車両用灯具を用いることによって、制御部が車両の加速度に応じて基準速度を変更するので、運転者に好適なタイミングで高速配光用灯具を点灯させることが可能となる。   By using the vehicular lamp according to the present invention, the control unit changes the reference speed according to the acceleration of the vehicle, so that the high-speed light distribution lamp can be turned on at a timing suitable for the driver.

特に、車両が急加速している場合には、基準速度を低い値に変更することにより早期に高速配光用灯具を点灯させて、遠方視界を確保し易くすることができる。さらに、車両が緩加速している場合には、高速配光用灯具を点灯させるタイミングを遅らせて車両近傍付近の視界を明瞭にし、ある程度速度が上がってから高速配光用灯具を点灯させることによって、運転者に好適なタイミングで高速配光用灯具を点灯させることが可能となる。   In particular, when the vehicle is accelerating rapidly, it is possible to easily turn on the high-speed light distribution lamp by changing the reference speed to a low value, thereby making it easy to secure a far field of view. Furthermore, when the vehicle is accelerating slowly, delay the timing to turn on the high-speed light distribution lamp to clarify the field of view near the vehicle, and turn on the high-speed light distribution lamp after the speed has increased to some extent. The high-speed light distribution lamp can be turned on at a timing suitable for the driver.

以下、本発明に係る車両用灯具を、図面を用いて詳細に説明する。   Hereinafter, a vehicular lamp according to the present invention will be described in detail with reference to the drawings.

本発明に係る車両用灯具は車両用前照灯１であり、図１に示すように、すれ違い配光用灯具２と、高速配光用灯具３と、車両速度検出部４と、高速道路検出部５と、制御部６とを備えている。   The vehicular lamp according to the present invention is a vehicular headlamp 1, and as shown in FIG. 1, a passing light distribution lamp 2, a high-speed light distribution lamp 3, a vehicle speed detection unit 4, and an expressway detection A unit 5 and a control unit 6 are provided.

すれ違い配光用灯具２は、図２、図３の符号Ａにより示される照射範囲を照らす灯具であり、車両前方右側の照射範囲が左側の照射範囲よりも狭くなっている。これは、日本のように車両進行方向が左側通行である場合に右側前方を明るくすると対向車に対して眩惑を与えてしまうおそれがあるためである。このため、車両の進行方向が右側通行である場合には、対向車線側となる前方左側の配光範囲が狭くなる。   The passing light distribution lamp 2 is a lamp that illuminates the irradiation range indicated by the symbol A in FIGS. 2 and 3, and the irradiation range on the right side in front of the vehicle is narrower than the irradiation range on the left side. This is because, if the vehicle traveling direction is left-hand traffic as in Japan, brightening the right front may cause dazzling oncoming vehicles. For this reason, when the advancing direction of the vehicle is right-hand traffic, the light distribution range on the left side on the front lane side becomes narrow.

高速配光用灯具３は、図２、図３の符号Ｂにより示される照射範囲を照らす灯具である。すれ違い配光用灯具２において照射範囲が狭くなった部分を、高速配光用灯具３が照明することによって、運転者は車両前方の遠方視界を確保することが容易となる。   The high-speed light distribution lamp 3 is a lamp that illuminates the irradiation range indicated by the symbol B in FIGS. The high-speed light distribution lamp 3 illuminates a portion of the passing light distribution lamp 2 where the irradiation range is narrowed, so that the driver can easily secure a far field of view ahead of the vehicle.

車両速度検出部４は、車両本体７より車速パルスを受信し、受信した車速パルスに基づいて走行速度を求める。なお、ＧＰＳ等を用いて車両７の走行位置を検出して車両７の時間当たりの走行位置変化、つまり移動速度を求めるような構成としても良い。   The vehicle speed detection unit 4 receives a vehicle speed pulse from the vehicle body 7 and obtains a traveling speed based on the received vehicle speed pulse. In addition, it is good also as a structure which detects the traveling position of the vehicle 7 using GPS etc., and calculates | requires the traveling position change of the vehicle 7 per time, ie, a moving speed.

高速道路検出部５は、車両７が走行している道路が高速道路であるか一般道路であるかを検出する。なお、ここで高速道路とは制限速度が８０Ｋｍ／ｈ以上の道路を意味する。高速道路検出部５による検出は特定の検出方法には限定されないが、例えば、ナビゲーションシステムにより検出される走行道路状況から判断する方法や、ＥＴＣ（Electronic Toll Collection：自動料金収受システム）の記録に基づいて道路状況を判断する方法や、走行道路の画像を読み取って画像処理を施し、中央分離帯の有無、車線の数、表示板の画像認識等により得られるデータ等を総合的に判断する方法等が用いられる。   The highway detection unit 5 detects whether the road on which the vehicle 7 is traveling is an expressway or a general road. Here, the expressway means a road having a speed limit of 80 km / h or more. Although the detection by the highway detection unit 5 is not limited to a specific detection method, it is based on, for example, a determination method based on a traveling road condition detected by a navigation system or a record of an ETC (Electronic Toll Collection). The method of judging the road situation, the method of comprehensively judging the data obtained by reading the image of the running road and performing image processing, the presence of the median strip, the number of lanes, the image recognition of the display board, etc. Is used.

制御部６は、車両速度が所定の速度に達した場合に自動的に高速配光用灯具３を点灯する。ただし、高速配光用灯具３を市街地走中に点灯すると周囲の車両等にグレアを与えるおそれがあるので、高速道路検出部５により車両７が高速道路を走行している旨を判断した場合にのみ高速配光用灯具３を点灯する。   The controller 6 automatically turns on the high-speed light distribution lamp 3 when the vehicle speed reaches a predetermined speed. However, if the high-speed light distribution lamp 3 is turned on while driving in the city, glare may be given to surrounding vehicles, etc., so that when the highway detection unit 5 determines that the vehicle 7 is traveling on the highway, Only turn on the lamp 3 for high-speed light distribution.

制御部６は、高速配光用灯具３の点消灯を行う所定速度（基準速度：以下、この速度の値を「閾値」とする。）を車両７の加速度に応じて変更することにより、高速配光用灯具３の点消灯を行うタイミングを変更する。このため、制御部６は、車両速度検出部４により検出された車両速度の時間変化に基づいて加速度を算出する。   The control unit 6 changes a predetermined speed (reference speed: hereinafter, this speed value is referred to as a “threshold value”) for turning on and off the high-speed light distribution lamp 3 according to the acceleration of the vehicle 7, thereby The timing for turning on and off the light distribution lamp 3 is changed. For this reason, the control unit 6 calculates the acceleration based on the time change of the vehicle speed detected by the vehicle speed detection unit 4.

図４（ａ）〜（ｃ）は、停止状態（速度０ｋｍ／ｈ）にある車両７が時間ｔにおいて時速１００ｋｍ／ｈまで達するまでの様子を示したグラフであり、（ａ）は一定の加速度で時速１００ｋｍ／ｈに達した場合のグラフ、（ｂ）は途中で加速を急速に高めて時速１００ｋｍ／ｈに達した場合のグラフ、（ｃ）は途中から加速度を緩やかにすることによって時速１００ｋｍ／ｈに達した場合のグラフである。   FIGS. 4A to 4C are graphs showing how the vehicle 7 in a stopped state (speed 0 km / h) reaches 100 km / h at time t, and FIG. 4A shows a constant acceleration. The graph when the speed reaches 100 km / h, (b) is a graph when acceleration is rapidly increased and reaches 100 km / h, and (c) is the speed when the acceleration is moderated from the middle to 100 km / h. It is a graph when / h is reached.

制御部６は、通常の加速度の場合（例えば、０．４〜０．６ｍ／ｓ２）の場合には閾値を９０ｋｍ／ｈとし、急加速度の場合（例えば、０．６ｍ／ｓ２以上）の場合には閾値を８０ｋｍ／ｈに変更し、緩加速度の場合（例えば、０．４ｍ／ｓ２以下）の場合には閾値を９５ｋｍ／ｈに変更する。 In the case of normal acceleration (for example, 0.4 to 0.6 m / s 2 ), the control unit 6 sets the threshold value to 90 km / h, and in the case of sudden acceleration (for example, 0.6 m / s 2 or more). In this case, the threshold value is changed to 80 km / h, and in the case of slow acceleration (for example, 0.4 m / s 2 or less), the threshold value is changed to 95 km / h.

図４（ａ）に示す場合、車両７の加速度は０．５ｍ／ｓ２程度であり、通常加速度に該当するので車両速度が９０ｋｍ／ｈに達したとき（時間ｔ０のとき）にすれ違い配光用灯具に加えて高速配光用灯具３を追加点灯する。一方、図４（ｂ）の場合には、時速ｔ１において速度が変化し、時間ｔ１から時間ｔ０までの間に加速度０．７ｍ／ｓ２程度で速度が上昇している。例えば、高速道路の本線に合流する場合のように短い時間で大きく加速させる必要がある場合に（ｂ）に示すような速度変化状態を示す。車両７が急加速している場合、運転者は一般的に前方遠方に視点を向ける傾向にあるため、比較的早い段階（車両が９０ｋｍ／ｈに到達する前）で高速配光用灯具３を点灯させて遠方視界を確保し易くすることが望ましい。このため、制御部６は、図４（ｂ）に示すように車両７が急加速する場合には閾値を９０ｋｍ／ｈから８０ｋｍ／ｈに一時的に低減させることによって、運転者に好適なタイミングで高速配光用灯具を追加点灯させる。 In the case shown in FIG. 4A, the acceleration of the vehicle 7 is about 0.5 m / s 2 and corresponds to the normal acceleration, so when the vehicle speed reaches 90 km / h (at time t0), the light distribution is passed. The high-speed light distribution lamp 3 is additionally lit in addition to the lamp for lighting. On the other hand, in the case of FIG. 4B, the speed changes at the speed t1, and the speed increases at an acceleration of about 0.7 m / s 2 from the time t1 to the time t0. For example, a speed change state as shown in (b) is shown when it is necessary to greatly accelerate in a short time as when joining the main road of a highway. When the vehicle 7 is accelerating rapidly, the driver generally tends to turn his / her viewpoint farther forward, so the high-speed light distribution lamp 3 can be used at a relatively early stage (before the vehicle reaches 90 km / h). It is desirable to make it easy to secure a far field of view by lighting. For this reason, when the vehicle 7 rapidly accelerates as shown in FIG. 4B, the control unit 6 temporarily reduces the threshold from 90 km / h to 80 km / h, so that the timing suitable for the driver is obtained. Turn on the additional high-speed light distribution lamp.

図４（ｃ）の場合には、当初急加速していた車両が時速ｔ２を境にして加速度を鈍化させており、時間ｔ２以降の加速度が０．３５ｍ／ｓ２程度となっている。このような場合、運転者は、図４（ｂ）に示すような急加速を行う場合に較べて、視点を車両前方近傍に向ける傾向があるので、車両７が９０ｋｍ／ｈに到達した時点で高速配光用灯具３を追加点灯すると運転者が望むよりも少し早いタイミングで灯具３が点灯されたものと感じてしまうおそれがある。このため、制御部６は、図４（ｃ）に示すように、車両７が緩やかに加速する場合には閾値を９０ｋｍ／ｈから９５ｋｍ／ｈの値に一時的に高くして灯具３の点灯を少し遅らせることによって、運転者に好適なタイミングで高速配光用灯具を点灯させる。また、緩やかに加速された車両が、通常加速時に設定される閾値（時速９０ｋｍ／ｈ）近傍の車両速度で安定走行する場合には、一時的に閾値を高くすることによって頻繁に高速配光用灯具の点消灯が繰り返されることを防止することが可能となる。 In the case of FIG.4 (c), the vehicle which accelerated rapidly at the beginning decelerates acceleration at the time speed t2, and the acceleration after time t2 is about 0.35 m / s < 2 >. In such a case, the driver tends to turn the viewpoint toward the vicinity of the front of the vehicle as compared with the case of performing the rapid acceleration as shown in FIG. 4B, and therefore, when the vehicle 7 reaches 90 km / h. If the high-speed light distribution lamp 3 is additionally lit, it may be felt that the lamp 3 has been lit at a slightly earlier timing than the driver desires. For this reason, as shown in FIG. 4C, the control unit 6 temporarily increases the threshold from 90 km / h to a value of 95 km / h when the vehicle 7 is slowly accelerating. The lamp for high-speed light distribution is turned on at a timing suitable for the driver. In addition, when a moderately accelerated vehicle travels stably at a vehicle speed near the threshold (90 km / h) set during normal acceleration, it is frequently used for high-speed light distribution by temporarily increasing the threshold. It is possible to prevent repeated lighting and extinguishing of the lamp.

図５は、上述のようにして制御部６が閾値の変更を行う場合（（ａ）の場合）と行わない場合（（ｂ）の場合）との高速配光用灯具３の点消灯切り換え状態を示したグラフである。閾値の変更を行わない場合に較べて、閾値の変更を行う場合の方が高速配光用灯具３の点消灯切り換え回数が少なくなり、運転者に煩わしさを感じさせにくくなる。また、切り換え回数を少なくすることによって、バルブ寿命を長くすることが可能となる。   FIG. 5 shows the switching on / off state of the high-speed light distribution lamp 3 when the control unit 6 changes the threshold as described above (in the case (a)) and not (in the case (b)). It is the graph which showed. Compared to the case where the threshold value is not changed, the number of times the high-speed light distribution lamp 3 is switched on and off is reduced when the threshold value is changed, and the driver is less likely to feel bothered. Further, the valve life can be extended by reducing the number of times of switching.

このように、制御部６が車両７の加速度に応じて閾値を変更することによって、車両７が急加速している場合には、早期に高速配光用灯具３を点灯させて遠方視界を確保し易くすることができ、車両が緩加速している場合には高速配光用灯具３を点灯させるタイミングを遅らせて車両近傍の視界を明瞭にし、ある程度速度が上がってから高速配光用灯具３を点灯させることによって運転者に好適なタイミングで高速配光用灯具３を点灯させることが可能となる。   Thus, when the vehicle 7 is accelerating rapidly, the control unit 6 changes the threshold value according to the acceleration of the vehicle 7 so that the high-speed light distribution lamp 3 is turned on early to secure a far field of view. When the vehicle is slowly accelerating, the timing for turning on the high-speed light distribution lamp 3 is delayed to clarify the field of view near the vehicle, and after a certain increase in speed, the high-speed light distribution lamp 3 It is possible to light the high-speed light distribution lamp 3 at a timing suitable for the driver.

なお、図６に示すように、緩やかに加速した車両が高くなった閾値（９５ｋｍ／ｈ）の速度まで車両速度を上げることなく、通常の加速時に設定される閾値（９０ｋｍ／ｈ）近傍で一定の速度を保つ場合に、制御部６は意図的に閾値を低い値、例えば８０ｋｍ／ｈ程度に変更するような設定にしても良い。車両の緩加速に伴い、一時的に閾値が高い値（９５ｋｍ／ｈ）に変更されても、一定時間経過後は閾値が通常の加速度の値に戻されてしまうので（９０ｋｍ／ｈ）、閾値が戻った後には、高速配光用灯具の点消灯が頻繁に繰り返されてしまい、運転者に煩わしさを与えてしまうおそれがある。そのため、緩加速時に高くなった閾値まで車両７が加速せずに通常加速時の閾値近傍の速度を一定に保つ状態となった場合（例えば、図６における時間Ｔだけ速度がほぼ一定に保たれた場合）には、制御部６は閾値を低い値（例えば８０ｋｍ／ｈ程度）に変更することによって、速度が一定に安定した後に高速配光用灯具が点消灯を頻繁に繰り返してしまうことを防止することができる。また、緩やかに加速する運転者は、急加速する運転者に較べて低めの速度を一定に保ちつつ高速道路を走行する傾向があるので、閾値を低い値に変更することによって、比較的低めの速度で高速道路走行を行う運転者に対しても十分な遠方視界を与えることが可能となる。さらに、緩加速をする車両の閾値を車両が一定になった後に低く変更することによって運転者に好適なタイミングで灯具３の点消灯切り換えを行うことになる。   In addition, as shown in FIG. 6, the vehicle accelerated moderately does not increase the vehicle speed to a higher threshold (95 km / h), and is constant near the threshold (90 km / h) set during normal acceleration. When the speed is maintained, the control unit 6 may intentionally change the threshold value to a low value, for example, about 80 km / h. Even if the threshold value is temporarily changed to a high value (95 km / h) due to slow acceleration of the vehicle, the threshold value is restored to the normal acceleration value after a certain time (90 km / h). After returning, the lighting of the high-speed light distribution lamp is frequently turned on and off, which may cause trouble for the driver. For this reason, when the vehicle 7 does not accelerate to the threshold value that has become higher during slow acceleration and the speed near the threshold value during normal acceleration is maintained constant (for example, the speed is maintained substantially constant for the time T in FIG. 6). The control unit 6 changes the threshold value to a low value (for example, about 80 km / h), so that the high-speed light distribution lamp frequently repeats turning on and off after the speed is stabilized at a constant value. Can be prevented. Also, drivers who accelerate slowly tend to drive on highways while keeping a lower speed constant compared to drivers that accelerate rapidly, so changing the threshold to a lower value makes it relatively lower. Sufficient distance vision can be given to a driver who travels on a highway at high speed. Further, the lighting device 3 is switched on and off at a timing suitable for the driver by changing the threshold value of the vehicle for slow acceleration to a low value after the vehicle becomes constant.

以上、本発明に係る車両用灯具を、図面を用いて説明したが、本発明に係る車両用灯具は上述したものに限定されるわけではない。例えば、上述した高速配光用灯具３とすれ違い配光用灯具２とは別体の灯具として車両に別々に設置することとしたが、１つの灯具を用いてシェード形状の切り替えによってすれ違い配光と、高速配光との切り替えを行うように構成しても良い。   As mentioned above, although the vehicle lamp which concerns on this invention was demonstrated using drawing, the vehicle lamp which concerns on this invention is not necessarily limited to what was mentioned above. For example, although the high-speed light distribution lamp 3 and the passing light distribution lamp 2 described above are separately installed in the vehicle as separate lamps, the passing light distribution can be achieved by switching the shade shape using one lamp. Alternatively, switching to high-speed light distribution may be performed.

また、制御部６が閾値を変更する基準となる加速度の値は、その車の性能・特性、道路状況や道路環境、その車両が使用される国等において変更されるものであり、図４（ａ）〜（ｃ）に示した加速度が０．４〜０．６ｍ／ｓ２の場合が通常の加速度、加速度が、０．６ｍ／ｓ２以上の場合に急加速度、加速度が０．４ｍ／ｓ２以下の場合に緩加速度という値は単なる例示であってこの値に限定されるものではない。 In addition, the acceleration value that is a reference for the control unit 6 to change the threshold value is changed in the performance / characteristics of the vehicle, the road condition and the road environment, the country in which the vehicle is used, and the like. When the acceleration shown in a) to (c) is 0.4 to 0.6 m / s 2 , the normal acceleration is obtained. When the acceleration is 0.6 m / s 2 or more, the sudden acceleration is obtained and the acceleration is 0.4 m / s. In the case of s 2 or less, the value of slow acceleration is merely an example and is not limited to this value.

本発明に係る車両用前照灯の構成を示したブロック図である。It is the block diagram which showed the structure of the vehicle headlamp which concerns on this invention. すれ違い配光用灯具の配光範囲と高速配光用灯具の配光範囲とを平面的に比較して示した図である。It is the figure which showed the light distribution range of the lamp for passing light distribution, and the light distribution range of the lamp for high-speed light distribution compared in plane. すれ違い配光用灯具の配光範囲と高速配光用灯具の配光範囲とを高さ方向で対比させて示した図である。It is the figure which contrasted and showed the light distribution range of the lamp for passing light distribution, and the light distribution range of the lamp for high-speed light distribution in the height direction. 停止状態にある車両が時速１００ｋｍ／ｈに達するまでにすれ違い配光用灯具に加えて高速配光用灯具が追加点灯される様子を示したグラフであり、（ａ）は一定の加速度で時速１００ｋｍ／ｈに達した場合を示したグラフであり、（ｂ）は途中で加速を急速に高めて時速１００ｋｍ／ｈに達した場合のグラフであり、（ｃ）は途中から加速度を緩やかにすることによって時速１００ｋｍ／ｈに達した場合のグラフである。It is the graph which showed a mode that the high-speed light distribution lamp was additionally lighted in addition to the light distribution lamp passing by until the vehicle in a stop state reached 100 km / h, (a) is 100 km / h with a constant acceleration. / B is a graph showing a case where the speed reached to / h, (b) is a graph when acceleration is rapidly increased to reach 100 km / h in the middle, and (c) is a graph where acceleration is moderated from the middle. Is a graph when the speed reaches 100 km / h. 車両の速度に応じて制御部が高速配光用灯具の点消灯の切り換えを行う様子を示した図であり、（ａ）は制御部が閾値の変更を行う場合を示し、（ｂ）は閾値の変更を行わない場合を示した図である。It is the figure which showed a mode that a control part performed switching of turning on and off of the lamp for high-speed light distribution according to the speed of a vehicle, (a) shows the case where a control part changes a threshold value, (b) is a threshold value. It is the figure which showed the case where no change is performed. 緩やかに加速した車両が高い閾値（９５ｋｍ／ｈ）の速度まで車両速度を上げることなく、通常の加速時に設定される閾値（９０ｋｍ／ｈ）近傍で一定の速度を保つ場合に制御部が高速配光用灯具を追加点等する様子を示した図である。When the vehicle that has been gradually accelerated maintains a constant speed in the vicinity of the threshold (90 km / h) set during normal acceleration without increasing the vehicle speed to a high threshold (95 km / h), the control unit is arranged at high speed. It is the figure which showed a mode that the light lamp was added.

符号の説明Explanation of symbols

１ 車両用前照灯
２ すれ違い配光用灯具
３ 高速配光用灯具
４ 車両速度検出部（車両速度検出手段）
５ 高速道路検出部
６ 制御部（制御手段）
７ 自車両 DESCRIPTION OF SYMBOLS 1 Vehicle headlamp 2 Passing light distribution lamp 3 High-speed light distribution lamp 4 Vehicle speed detection part (vehicle speed detection means)
5 Highway detection unit 6 Control unit (control means)
7 Own vehicle

Claims (1)

対向車線側の配光範囲を狭くしたすれ違い配光用灯具と、
高速走行時に配光範囲を車両正面方向へ広げることにより遠方視界を高めた高速配光用灯具と、
車両の速度を検出する車両速度検出手段と、
該車両速度検出手段により検出された速度が基準速度以上である場合に、前記高速配光用灯具を点灯させる制御手段とを備えた車両用灯具において、
前記制御手段は、前記車両速度検出手段により検出された速度に基づいて車両の加速度を算出するとともに、算出された加速度に応じて前記基準速度の値を変更するものであって、算出された前記加速度が低い値を維持する場合には前記基準速度の値を高い値に変更し、かつ算出された前記加速度が低い値を維持した後に、前記車両速度検出手段により検出された速度が設定変更される前の基準速度近傍の値を維持する状態となった場合には、前記基準速度を設定変更がなされる前の基準速度の値よりも低い値に変更することを特徴とする車両用灯具。 A passing light distribution lamp with a narrow light distribution range on the opposite lane side,
A lamp for high-speed light distribution that increases the far field of view by expanding the light distribution range toward the front of the vehicle during high-speed driving;
Vehicle speed detecting means for detecting the speed of the vehicle;
In a vehicle lamp comprising a control means for lighting the high-speed light distribution lamp when the speed detected by the vehicle speed detection means is equal to or higher than a reference speed,
Wherein said control means calculates the acceleration of the vehicle based on the speed detected by the vehicle speed detecting means, be one that changes the value of the reference speed in accordance with the calculated acceleration, the calculated When the acceleration is kept at a low value, the reference speed value is changed to a high value, and after the calculated acceleration is kept at a low value, the speed detected by the vehicle speed detecting means is changed. When the vehicle enters a state in which a value in the vicinity of the reference speed before being changed is maintained, the reference speed is changed to a value lower than the value of the reference speed before the setting is changed .
JP2004114460A 2004-04-08 2004-04-08 Vehicle lighting Expired - Fee Related JP4333453B2 (en)

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