JP2010247551A - Irradiation direction control device - Google Patents

Irradiation direction control device Download PDF

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JP2010247551A
JP2010247551A JP2009095814A JP2009095814A JP2010247551A JP 2010247551 A JP2010247551 A JP 2010247551A JP 2009095814 A JP2009095814 A JP 2009095814A JP 2009095814 A JP2009095814 A JP 2009095814A JP 2010247551 A JP2010247551 A JP 2010247551A
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vehicle body
vehicle
acceleration
angular velocity
irradiation
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Noritaka Ichinomiya
礼孝 一宮
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Panasonic Corp
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Panasonic Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an irradiation direction control device capable of suppressing restriction for installation position and dazing oncoming cars. <P>SOLUTION: A vehicle 1 including a vehicle body 2 arranged with headlights 4 and an undercarriage 3 installed with the vehicle body 2, has a configuration in which the vehicle body 2 is mounted with a first acceleration sensor 5 for detecting acceleration with the longitudinal direction of the vehicle body 2 as a detection axis, and the undercarriage 3 is mounted with a second acceleration sensor 6 for detecting acceleration with the longitudinal direction of the undercarriage 3 as a detection shaft, and thereby, an irradiation optical axial angle of the headlights 4 is adjusted by calculating an inclination of the vehicle body 2 based on acceleration and gravitational acceleration detected by the first and the second acceleration sensors 5, 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、車両等の前照灯の照射方向を制御する照射方向制御装置に関するものである。   The present invention relates to an irradiation direction control device that controls the irradiation direction of a headlamp such as a vehicle.

図６は従来の車両用の照射方向制御装置である。   FIG. 6 shows a conventional irradiation direction control device for a vehicle.

図６に示すように、従来の照射方向制御装置は、車体１１ａと車台１１ｂの間に車高センサ１１ｃを配置して、連結機構１１ｄによって車台１１ｂに対する車体１１ａの変位を検出する。検出された変位を車体１１ａの車台１１ｂに対する傾斜角度に換算し、その傾斜角度に応じた照射方向を適切に調整して制御するものである。なお、この出願の発明に関する先行技術文献としては、例えば、特許文献１が知られている。   As shown in FIG. 6, the conventional irradiation direction control device arranges the vehicle height sensor 11c between the vehicle body 11a and the vehicle body 11b, and detects the displacement of the vehicle body 11a with respect to the vehicle body 11b by the connecting mechanism 11d. The detected displacement is converted into an inclination angle with respect to the chassis 11b of the vehicle body 11a, and the irradiation direction according to the inclination angle is appropriately adjusted and controlled. For example, Patent Document 1 is known as a prior art document relating to the invention of this application.

特開平９−２８６２７４号公報JP-A-9-286274

しかしながら、上記従来の照射方向制御装置は、車体１１aと車台１１ｂとの間に車高センサ１１ｃを設ける必要があるので取付場所が制約されるという問題点や、１つの車高センサ１１ｃを用いて検出するので、勾配をもった道路において車両姿勢変化の検出精度が不十分となり、制御ズレが発生したり不適切な照射となったりして対向車への眩惑が生じるという問題点を有していた。   However, in the conventional irradiation direction control device, it is necessary to provide the vehicle height sensor 11c between the vehicle body 11a and the chassis 11b, so that there is a problem that the installation location is restricted, and one vehicle height sensor 11c is used. As a result, the detection accuracy of the vehicle posture change is insufficient on a road with a slope, and there is a problem that a control deviation occurs or inappropriate illumination occurs, resulting in dazzling oncoming vehicles. It was.

本発明は上記問題点を解決し、取付場所の制約や対向車への眩惑を防止した照射方向制御装置を提供することを目的とする。   An object of the present invention is to solve the above-mentioned problems and to provide an irradiation direction control device that prevents the restriction of the mounting location and dazzling oncoming vehicles.

上記目的を達成するために本発明は、灯具を配置した車体と、前記車体を搭載した車台とを有する車両において、前記車体には、前記車体の前後方向を検出軸とした加速度を検出する第１の加速度センサを設け、前記車台には、前記車台の前後方向を検出軸とした加速度を検出する第２の加速度センサを設け、前記第１、第２の加速度センサにより検出した加速度と、重力加速度とに基いて、前記車体の傾きを算出して、前記灯具の照射光軸角を調整する構成としたものである。   In order to achieve the above object, the present invention provides a vehicle having a vehicle body on which a lamp is arranged and a chassis on which the vehicle body is mounted, wherein the vehicle body detects acceleration with a front-rear direction of the vehicle body as a detection axis. 1, and a second acceleration sensor for detecting an acceleration with the front-rear direction of the chassis as a detection axis is provided on the chassis, the acceleration detected by the first and second acceleration sensors, and gravity The tilt of the vehicle body is calculated based on the acceleration, and the irradiation optical axis angle of the lamp is adjusted.

上記構成により、第１の加速度センサは車体のいずれかに取り付ければよく、第２の加速度センサは車台のいずれかに取り付ければよいので、取付場所の制約が少ない。   With the above configuration, the first acceleration sensor may be attached to any one of the vehicle bodies, and the second acceleration sensor may be attached to any one of the chassis.

また、車体に取り付けた第１の加速度センサおよび車台に取り付けた第２の加速度センサを用いて照射光軸角を算出するので、勾配をもった道路においても車両姿勢変化の検出精度が向上し、制御ズレの発生や不適切な照射がなくなり、対向車への眩惑を適切に抑制できる。特に、リアルタイムに灯具の照射光軸角を調整することができる。   In addition, since the irradiation optical axis angle is calculated using the first acceleration sensor attached to the vehicle body and the second acceleration sensor attached to the chassis, the detection accuracy of the vehicle posture change is improved even on a road with a slope, Occurrence of control deviation and inappropriate irradiation are eliminated, and dazzling oncoming vehicles can be appropriately suppressed. In particular, the irradiation optical axis angle of the lamp can be adjusted in real time.

本発明の実施の形態１における車両用の照射方向制御装置の動作説明図Operation | movement explanatory drawing of the irradiation direction control apparatus for vehicles in Embodiment 1 of this invention 車両用の照射方向制御装置のブロック図Block diagram of irradiation direction control device for vehicle 本発明の実施の形態２における車両用の照射方向制御装置の動作説明図Operation | movement explanatory drawing of the irradiation direction control apparatus for vehicles in Embodiment 2 of this invention 本発明の実施の形態３における車両用の照射方向制御装置の動作説明図Operation | movement explanatory drawing of the irradiation direction control apparatus for vehicles in Embodiment 3 of this invention 本発明の実施の形態４における車両用の照射方向制御装置の動作説明図Explanatory drawing of operation | movement of the irradiation direction control apparatus for vehicles in Embodiment 4 of this invention. 従来の車両用の照射方向制御装置を装着した車両の概略図Schematic diagram of a vehicle equipped with a conventional vehicle irradiation direction control device

（実施の形態１）
以下、実施の形態１を用いて、本発明の特に請求項１に記載の照射制御方向装置について図面を参照しながら説明する。 (Embodiment 1)
Hereinafter, the irradiation control direction device according to the first aspect of the present invention will be described with reference to the drawings, using the first embodiment.

図１は本発明の実施の形態１における車両用の照射方向制御装置の動作説明図、図２は照射方向制御装置のブロック図である。   FIG. 1 is an operation explanatory diagram of the irradiation direction control device for a vehicle in Embodiment 1 of the present invention, and FIG. 2 is a block diagram of the irradiation direction control device.

図１において、車両１は自動車であって、この車両１は車体２と車台３を備えている。車体２も車台３も車両１の一部を構成するが、車体２は車台３のサスペンション・タイヤを介して支えられている。この車両１は、互いに直交するＸ軸とＹ軸とＺ軸において、進行方向をＸ軸とした場合、このＸ軸に対してある一定の勾配をもった道路に配置している。   In FIG. 1, a vehicle 1 is an automobile, and the vehicle 1 includes a vehicle body 2 and a chassis 3. Although the vehicle body 2 and the chassis 3 constitute a part of the vehicle 1, the vehicle body 2 is supported via suspensions and tires of the chassis 3. The vehicle 1 is arranged on a road having a certain gradient with respect to the X axis when the traveling direction is the X axis in the X, Y, and Z axes orthogonal to each other.

前照灯４は車体２の前方に取り付けた照明であり、夜間等における運転者の視認性を確保するために、車両１の前方を照らすものである。前照灯４から発せられる照明の光束は、線状ではなく、前方に進むにしたがって広がる。   The headlamp 4 is an illumination mounted in front of the vehicle body 2 and illuminates the front of the vehicle 1 in order to ensure the visibility of the driver at night or the like. The luminous flux of the illumination emitted from the headlamp 4 is not linear but spreads as it travels forward.

車体２には第１の加速度センサ５を設け、車台３には第２の加速度センサ６を設けている。第１の加速度センサ５は車体２のいずれに設置してもよく、第２の加速度センサ６も車台３のいずれに設置してもよい。   The vehicle body 2 is provided with a first acceleration sensor 5, and the chassis 3 is provided with a second acceleration sensor 6. The first acceleration sensor 5 may be installed on any of the vehicle bodies 2, and the second acceleration sensor 6 may be installed on any of the chassis 3.

第１および第２の加速度センサ５、６としては、従来から既に公知の慣性力を利用して検出する加速度センサを用いればよい。そのような加速度センサは、例えば、弾性体を介して形成された質量部が、加速度が加わった際に、加速度方向と反対の方向へ移動することを利用して加速度を検出するものである。   As the first and second acceleration sensors 5 and 6, acceleration sensors that are conventionally detected using a known inertial force may be used. For example, such an acceleration sensor detects acceleration by using a mass part formed via an elastic body to move in a direction opposite to the acceleration direction when acceleration is applied.

第１の加速度センサ５は、車体２の前後方向のα軸を検出方向としており、第２の加速度センサ６は車台３の前後方向のβ軸を検出方向としている。車両１の進行方向を共に正として検出する。   The first acceleration sensor 5 uses the α axis in the front-rear direction of the vehicle body 2 as the detection direction, and the second acceleration sensor 6 uses the β axis in the front-rear direction of the chassis 3 as the detection direction. Both the traveling directions of the vehicle 1 are detected as positive.

次に、このα軸とβ軸間の傾きθの算出について説明する。この傾きθは車台３に対する車体２の傾きである。図２に示すように、照射光軸角計算装置７によって、第１および第２の加速度センサ５、６の出力を基に傾きθを計算し、前照灯４の光軸を調整する。具体的には、図１に示すように、車体２に荷物８を積載して荷重が加わると、車台３に変化はないが車体２のみが傾いて、車両１の姿勢が変化する。このとき、水平面に対し、車台３の勾配角度をθ１、車体２の勾配角度をθ２とすると、第１および第２の加速度センサの出力より、θ１、θ２は以下の（式１）、（式２）で表すことができる（数１）。   Next, calculation of the inclination θ between the α axis and the β axis will be described. This inclination θ is the inclination of the vehicle body 2 with respect to the chassis 3. As illustrated in FIG. 2, the irradiation optical axis angle calculation device 7 calculates the inclination θ based on the outputs of the first and second acceleration sensors 5 and 6 and adjusts the optical axis of the headlamp 4. Specifically, as shown in FIG. 1, when a load 8 is loaded on the vehicle body 2 and a load is applied, the vehicle body 3 is not tilted, but only the vehicle body 2 is tilted, and the posture of the vehicle 1 is changed. At this time, if the gradient angle of the chassis 3 is θ1 and the gradient angle of the vehicle body 2 is θ2 with respect to the horizontal plane, θ1 and θ2 are expressed by the following (Equation 1) and (Equation 1) from the outputs of the first and second acceleration sensors. 2) (Expression 1).

Figure 2010247551
Figure 2010247551

上式において、ｇ１は第１の加速度センサ５が検知する重力加速度のα軸成分、ｇ２は第２の加速度センサ６が検知する重力加速度のβ軸成分、Ｇは重力加速度である。照射方向制御装置は前照灯４の照射光軸を路面に対して一定に保つ必要があるから、光軸の補正角度θは（式１）、（式２）から以下のように（式３）で表される（数２）。   In the above equation, g1 is the α-axis component of gravity acceleration detected by the first acceleration sensor 5, g2 is the β-axis component of gravity acceleration detected by the second acceleration sensor 6, and G is the gravity acceleration. Since the irradiation direction control device needs to keep the irradiation optical axis of the headlamp 4 constant with respect to the road surface, the correction angle θ of the optical axis is calculated from (Equation 1) and (Equation 2) as follows (Equation 3 (Equation 2).

Figure 2010247551
Figure 2010247551

（式３）の計算を照射光軸角計算装置７で行うことにより、車体２の傾きを検出し、その傾きに応じて、車体２の光軸を動かし、照射方向を制御する。   By performing the calculation of (Equation 3) by the irradiation optical axis angle calculation device 7, the inclination of the vehicle body 2 is detected, and the optical axis of the vehicle body 2 is moved in accordance with the inclination to control the irradiation direction.

以上のように実施の形態１によれば、第１の加速度センサ５は車体２のいずれかに取り付ければよく、第２の加速度センサ６は車台３のいずれかに取り付ければよく、取付場所の制約が少ない。   As described above, according to the first embodiment, the first acceleration sensor 5 may be attached to any one of the vehicle bodies 2, and the second acceleration sensor 6 may be attached to any one of the chassis 3. Less is.

また、車体２に取り付けた第１の加速度センサ５および車台３に取り付けた第２の加速度センサ６を用いて照射光軸角を算出するので、勾配をもった道路においても車両姿勢変化の検出精度が向上し、制御ズレの発生や不適切な照射がなくなり、対向車への眩惑を適切に抑制できるものである。特に、リアルタイムに灯具の照射光軸角を調整することができるものである。   In addition, since the irradiation optical axis angle is calculated using the first acceleration sensor 5 attached to the vehicle body 2 and the second acceleration sensor 6 attached to the chassis 3, the detection accuracy of the vehicle posture change can be detected even on a road with a gradient. As a result, control deviation and inappropriate irradiation are eliminated, and dazzling oncoming vehicles can be appropriately suppressed. In particular, the irradiation optical axis angle of the lamp can be adjusted in real time.

（実施の形態２）
以下、実施の形態２を用いて、本発明の特に請求項２に記載の発明について図面を参照しながら説明する。 (Embodiment 2)
Hereinafter, the second aspect of the present invention will be described with reference to the drawings.

本発明の実施の形態２における車両用の照射方向制御装置は、実施の形態１における車両用の照射方向制御装置に対して、さらに角速度センサを付加したものである。   The vehicle irradiation direction control device according to the second embodiment of the present invention is obtained by further adding an angular velocity sensor to the vehicle irradiation direction control device according to the first embodiment.

図３は、本発明の実施の形態２における車両用の照射方向制御装置の動作説明図である。図３に示すように、車両１には角速度センサ９を取り付けている。この角速度センサ９は、車体２のピッチ角方向の角速度を検出するものであって、図３のＸ軸方向、即ち車両１の進行方向（Ｘ軸方向）を前方とした時、Ｙ軸回り（矢印で示した方向）の角速度を検出するものである。   FIG. 3 is an operation explanatory diagram of the irradiation direction control device for a vehicle in the second embodiment of the present invention. As shown in FIG. 3, an angular velocity sensor 9 is attached to the vehicle 1. The angular velocity sensor 9 detects an angular velocity in the pitch angle direction of the vehicle body 2. When the X-axis direction in FIG. 3, that is, the traveling direction of the vehicle 1 (X-axis direction) is the front, The angular velocity in the direction indicated by the arrow) is detected.

このような角速度センサ９を車体２に取り付けることによって、車体２のピッチ角方向（Ｙ軸回り）の傾きに対して、前照灯４の光軸の調整を行うことができる。   By attaching such an angular velocity sensor 9 to the vehicle body 2, the optical axis of the headlamp 4 can be adjusted with respect to the inclination of the vehicle body 2 in the pitch angle direction (around the Y axis).

この角速度センサ９を用いた前照灯４の光軸の調整原理は、デジタルビデオムービーや、デジタルスチルカメラなどの手ブレ防止装置と同じ原理である。即ち、車体２のピッチ角方向（Ｙ軸回り）の傾きに対して変化した角速度に応じて、それと反対の方向に前照灯４の光軸を回転させて調整する原理である。   The principle of adjusting the optical axis of the headlamp 4 using the angular velocity sensor 9 is the same as that of an anti-shake device such as a digital video movie or a digital still camera. That is, it is a principle of adjusting by rotating the optical axis of the headlamp 4 in the opposite direction according to the angular velocity changed with respect to the inclination of the vehicle body 2 in the pitch angle direction (around the Y axis).

具体的には、通常、角速度センサ９からの角速度情報として出力される物性値は電圧であるので、この電圧値に応じた速さで前照灯４の光軸を車体２に生じている角速度に対する反対方向に回転させればよい。角速度センサ９からの電圧出力に対し適当な増幅を行い、前照灯４の光軸を回転させる装置（図示せず）を動作させることにより、車体２の傾きに対する前照灯４の光軸の調整を行うことができる。   Specifically, since the physical property value output as angular velocity information from the angular velocity sensor 9 is usually a voltage, the angular velocity at which the optical axis of the headlamp 4 is generated in the vehicle body 2 at a speed according to this voltage value. What is necessary is just to rotate in the opposite direction to. By appropriately amplifying the voltage output from the angular velocity sensor 9 and operating a device (not shown) for rotating the optical axis of the headlamp 4, the optical axis of the headlamp 4 with respect to the inclination of the vehicle body 2 is adjusted. Adjustments can be made.

但し、角速度センサ９を用いる場合、車体２の角速度、即ち、ピッチ角方向（Ｙ軸回り）へ傾く速さを検出することはできるが、絶対的な車体２の傾き、即ち、Ｘ軸に対する傾きを直接的に検出することはできない。したがって、あらかじめ、照射光軸角計算装置７による車体２のピッチ角方向（Ｙ軸回り）の傾きを検出し、この傾きに応じて前照灯４の光軸を調整しておき、これを基準にして角速度センサ９からの出力に基づく前照灯４の光軸の調整を行うのがよい。それでも、角速度センサ９の検出誤差や、前照灯４の光軸の調整誤差などによる累積誤差が懸念されるが、所定時間毎に照射光軸角計算装置７からのＸ軸に対する車体２の傾きの情報を検知して、これに基づいて前照灯４の光軸を調整すれば問題ない。   However, when the angular velocity sensor 9 is used, the angular velocity of the vehicle body 2, that is, the speed of tilting in the pitch angle direction (around the Y axis) can be detected, but the absolute inclination of the vehicle body 2, that is, the inclination with respect to the X axis. Cannot be detected directly. Accordingly, the inclination of the vehicle body 2 in the pitch angle direction (around the Y axis) is detected in advance by the irradiation optical axis angle calculation device 7, and the optical axis of the headlamp 4 is adjusted according to this inclination, and this is used as a reference. Thus, it is preferable to adjust the optical axis of the headlamp 4 based on the output from the angular velocity sensor 9. Still, there are concerns about accumulated errors due to detection errors of the angular velocity sensor 9 and adjustment errors of the optical axis of the headlamp 4, but the inclination of the vehicle body 2 with respect to the X axis from the irradiation optical axis angle calculation device 7 every predetermined time. If this information is detected and the optical axis of the headlamp 4 is adjusted based on this information, there is no problem.

以上のように実施の形態２によれば、車体２のピッチ角方向（Ｙ軸回り）の角速度を検出する角速度センサ９を設けているので、この角速度センサ９によって車体２のピッチ角方向（Ｙ軸回り）の傾きを検出できる。よって、車体２のピッチ角方向（Ｙ軸回り）の照射光軸角を調整することが可能となり、実施の形態１における効果と重畳して、検出の信頼性が向上するものである。   As described above, according to the second embodiment, the angular velocity sensor 9 that detects the angular velocity in the pitch angle direction (around the Y axis) of the vehicle body 2 is provided. The inclination around the axis can be detected. Therefore, the irradiation optical axis angle in the pitch angle direction (around the Y axis) of the vehicle body 2 can be adjusted, and the detection reliability is improved by superimposing the effect in the first embodiment.

（実施の形態３）
以下、実施の形態３を用いて、本発明の特に請求項３に記載の発明について図面を参照しながら説明する。 (Embodiment 3)
Hereinafter, the third embodiment of the present invention will be described with reference to the drawings.

本発明の実施の形態３における車両用の照射方向制御装置は、実施の形態１における車両用の照射方向制御装置に対して、さらに角速度センサを付加したものである。   The vehicle irradiation direction control apparatus according to Embodiment 3 of the present invention is obtained by further adding an angular velocity sensor to the vehicle irradiation direction control apparatus according to Embodiment 1.

図４は、本発明の実施の形態３における車両用の照射方向制御装置の動作説明図である。図４に示すように、車両１には角速度センサ９を取り付けている。この角速度センサ９は、車体２のロール角方向の角速度を検出するものであって、図４のＸ軸方向、即ち車両１の進行方向（Ｘ軸方向）を前方とした時、Ｘ軸回り（矢印で示した方向）の角速度を検出するものである。   FIG. 4 is an operation explanatory diagram of the irradiation direction control device for a vehicle in the third embodiment of the present invention. As shown in FIG. 4, an angular velocity sensor 9 is attached to the vehicle 1. This angular velocity sensor 9 detects the angular velocity in the roll angular direction of the vehicle body 2, and when the forward direction is the X-axis direction in FIG. 4, that is, the traveling direction of the vehicle 1 (X-axis direction), The angular velocity in the direction indicated by the arrow) is detected.

このような角速度センサ９を車体２に取り付けることによって、車体２のロール角方向（Ｘ軸回り）の傾きに対して、前照灯４の光軸の調整を行うことが出来る。   By attaching such an angular velocity sensor 9 to the vehicle body 2, the optical axis of the headlamp 4 can be adjusted with respect to the inclination of the vehicle body 2 in the roll angle direction (around the X axis).

以上のように実施の形態３によれば、車体２のロール角方向（Ｘ軸回り）の角速度を検出する角速度センサ９を設けているので、この角速度センサ９によって、車体２のロール角方向（Ｘ軸回り）の傾きを検出することができる。よって、車体２のロール角方向（Ｘ軸回り）の照射光軸角を調整することが可能となり、実施の形態１における効果に加えて、車両１の旋回時等、車体２のロール角方向（Ｘ軸回り）における灯具の照射光軸角も適正に調整できる。   As described above, according to the third embodiment, the angular velocity sensor 9 that detects the angular velocity in the roll angular direction (around the X axis) of the vehicle body 2 is provided. The inclination around the X axis can be detected. Therefore, the irradiation optical axis angle in the roll angle direction (around the X axis) of the vehicle body 2 can be adjusted. In addition to the effects of the first embodiment, the roll angle direction ( The irradiation optical axis angle of the lamp around the X axis can also be adjusted appropriately.

（実施の形態４）
以下、実施の形態４を用いて、本発明の特に請求項４に記載の発明について図面を参照しながら説明する。 (Embodiment 4)
Hereinafter, the fourth embodiment of the present invention will be described with reference to the drawings.

本発明の実施の形態４における車両用の照射方向制御装置は、実施の形態１における車両用の照射方向制御装置に対して、さらに角速度センサを付加したものである。   The vehicle irradiation direction control device according to the fourth embodiment of the present invention is obtained by further adding an angular velocity sensor to the vehicle irradiation direction control device according to the first embodiment.

図５は、本発明の実施の形態４における車両用の照射方向制御装置の動作説明図である。図５に示すように、車両１には角速度センサ９を取り付けている。この角速度センサ９は、車体２のヨー角方向の角速度を検出するものであって、図５のＸ軸方向、即ち車両１の進行方向（Ｘ軸方向）を前方とした時、Ｚ軸回り（矢印で示した方向）の角速度を検出するものである。   FIG. 5 is an operation explanatory diagram of the irradiation direction control device for a vehicle in the fourth embodiment of the present invention. As shown in FIG. 5, an angular velocity sensor 9 is attached to the vehicle 1. This angular velocity sensor 9 detects the angular velocity of the vehicle body 2 in the yaw angle direction. When the X-axis direction of FIG. 5, that is, the traveling direction (X-axis direction) of the vehicle 1 is the front, The angular velocity in the direction indicated by the arrow) is detected.

このような角速度センサ９を車体２に取り付けることによって、車体２のヨー角方向（Ｚ軸回り）の傾きに対して、前照灯４の光軸の調整を行うことが出来る。   By attaching the angular velocity sensor 9 to the vehicle body 2, the optical axis of the headlamp 4 can be adjusted with respect to the inclination of the vehicle body 2 in the yaw angle direction (around the Z axis).

以上のように実施の形態４によれば、車体２のヨー角方向（Ｚ軸回り）の角速度を検出する角速度センサ９を設けているので、この角速度センサ９によって、車体２のヨー角方向（Ｚ軸回り）の傾きを検出することができる。よって、車体２のヨー角方向（Ｚ軸回り）の照射光軸角を調整することが可能となり、実施の形態１における効果に加えて、車両の旋回時等、車体２のヨー角方向（Ｚ軸回り）における灯具の照射光軸角も適正に調整できる。   As described above, according to the fourth embodiment, the angular velocity sensor 9 that detects the angular velocity in the yaw angle direction (around the Z axis) of the vehicle body 2 is provided. The tilt around the Z axis can be detected. Therefore, the irradiation optical axis angle in the yaw angle direction (around the Z axis) of the vehicle body 2 can be adjusted, and in addition to the effects in the first embodiment, the yaw angle direction (Z The illumination optical axis angle of the lamp around the axis can also be adjusted appropriately.

本発明に係る照射方向制御装置は、勾配のある道路において車体の姿勢変化を演算することで、灯具の照射方向を適切に制御することができ、各種車両に適用できる。   The irradiation direction control device according to the present invention can appropriately control the irradiation direction of the lamp by calculating the posture change of the vehicle body on a sloped road, and can be applied to various vehicles.

１ 車両
２ 車体
３ 車台
４ 前照灯
５ 第１の加速度センサ
６ 第２の加速度センサ
７ 照射光軸角計算装置
８ 荷物
９ 角速度センサ DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Chassis 4 Headlamp 5 1st acceleration sensor 6 2nd acceleration sensor 7 Irradiation optical axis angle calculation device 8 Luggage 9 Angular velocity sensor

Claims (4)

車両に取付けた灯具の照射光軸角を調整する照射方向制御装置であって、前記車両は、前記灯具を配置した車体と、前記車体を搭載した車台とを有し、前記車体には、前記車体の前後方向を検出軸とした加速度を検出する第１の加速度センサを設け、前記車台には、前記車台の前後方向を検出軸とした加速度を検出する第２の加速度センサを設け、前記第１、第２の加速度センサにより検出した加速度と、重力加速度とに基いて、前記車体の傾きを算出して、前記灯具の照射光軸角を調整する照射方向制御装置。 An irradiation direction control device for adjusting an irradiation optical axis angle of a lamp attached to a vehicle, wherein the vehicle includes a vehicle body on which the lamp is disposed, and a chassis on which the vehicle body is mounted. A first acceleration sensor for detecting an acceleration with a front-rear direction of the vehicle body as a detection axis; and a second acceleration sensor for detecting an acceleration with a front-rear direction of the vehicle body as a detection axis. 1. An irradiation direction control device that calculates the tilt of the vehicle body based on the acceleration detected by the second acceleration sensor and the acceleration of gravity, and adjusts the irradiation optical axis angle of the lamp. 前記車体には、前記車体のピッチ角方向の角速度を検出する角速度センサを設けた請求項１記載の照射方向制御装置。 The irradiation direction control device according to claim 1, wherein the vehicle body is provided with an angular velocity sensor that detects an angular velocity in a pitch angle direction of the vehicle body. 前記車体には、前記車体のロール角方向の角速度を検出する角速度センサを設けた請求項１記載の照射方向制御装置。 The irradiation direction control device according to claim 1, wherein the vehicle body is provided with an angular velocity sensor that detects an angular velocity in a roll angle direction of the vehicle body. 前記車体には、前記車体のヨー角方向の角速度を検出する角速度センサを設けた請求項１記載の照射方向制御装置。 The irradiation direction control device according to claim 1, wherein the vehicle body is provided with an angular velocity sensor that detects an angular velocity in a yaw angle direction of the vehicle body.
JP2009095814A 2009-04-10 2009-04-10 Irradiation direction control device Pending JP2010247551A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012250634A (en) * 2011-06-03 2012-12-20 Koito Mfg Co Ltd Vehicle lamp control device and vehicle lamp system
JP2013237417A (en) * 2012-05-17 2013-11-28 Koito Mfg Co Ltd Sensor mounting structure and vehicle lighting system
WO2018142593A1 (en) * 2017-02-03 2018-08-09 三菱電機株式会社 Headlight control device, headlight control method, and headlight control program
EP3406487A1 (en) * 2017-05-19 2018-11-28 Stanley Electric Co., Ltd. Control device for vehicular lamp and vehicle lighting system
CN109421586A (en) * 2017-09-01 2019-03-05 深圳市绎立锐光科技开发有限公司 Car lamp control system and control method
JP2019219211A (en) * 2018-06-18 2019-12-26 株式会社デンソーテン Inclination angle measuring device and inclination angle measuring method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012250634A (en) * 2011-06-03 2012-12-20 Koito Mfg Co Ltd Vehicle lamp control device and vehicle lamp system
US9067533B2 (en) 2011-06-03 2015-06-30 Koito Manufacturing Co., Ltd. Vehicle lamp control device and vehicle lamp system
JP2013237417A (en) * 2012-05-17 2013-11-28 Koito Mfg Co Ltd Sensor mounting structure and vehicle lighting system
WO2018142593A1 (en) * 2017-02-03 2018-08-09 三菱電機株式会社 Headlight control device, headlight control method, and headlight control program
EP3406487A1 (en) * 2017-05-19 2018-11-28 Stanley Electric Co., Ltd. Control device for vehicular lamp and vehicle lighting system
CN109421586A (en) * 2017-09-01 2019-03-05 深圳市绎立锐光科技开发有限公司 Car lamp control system and control method
JP2019219211A (en) * 2018-06-18 2019-12-26 株式会社デンソーテン Inclination angle measuring device and inclination angle measuring method
JP7076293B2 (en) 2018-06-18 2022-05-27 株式会社デンソーテン Tilt angle measuring device and tilt angle measuring method

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