JP5118564B2 - Vehicle lighting - Google Patents
Vehicle lighting Download PDFInfo
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- JP5118564B2 JP5118564B2 JP2008164325A JP2008164325A JP5118564B2 JP 5118564 B2 JP5118564 B2 JP 5118564B2 JP 2008164325 A JP2008164325 A JP 2008164325A JP 2008164325 A JP2008164325 A JP 2008164325A JP 5118564 B2 JP5118564 B2 JP 5118564B2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
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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
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/16—Laser light sources
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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
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
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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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/255—Lenses with a front view of circular or truncated circular outline
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Description
本発明は、半導体光源の光量を変化させて、車両周辺の照度分布を調整する車両用灯具に関する。 The present invention relates to a vehicular lamp that adjusts an illuminance distribution around a vehicle by changing a light amount of a semiconductor light source.
従来、半導体光源に流す電流を調光回路で制御し、車両周辺の明るさを調整する車両用灯具が知られている。例えば、特許文献１には、ロービーム用光源にＬＥＤを用い、ハイビーム用光源にハロゲンランプを用いた車両用前照灯において、ＬＥＤの電流をハロゲンランプの点灯状態に合わせて三段階に切り替えることで、運転者に違和感のない調光を行う技術が提案されている。
しかし、従来の車両用灯具は、半導体光源の光出力を電流制御によって切り替えているため、複雑な構成の調光回路を使用する必要があるうえ、切替指令に対し調光回路の応答が遅れるという問題点があった。また、照明領域の全体的な照度分布は調整できるが、特定の区間を暗くしたり明るくしたりするなど、照明領域の部分的な調光が困難なため、特に、車両用前照灯において調光パターンがごく少数に限られるという問題点もあった。 However, since the conventional vehicle lamp switches the light output of the semiconductor light source by current control, it is necessary to use a dimming circuit with a complicated configuration, and the response of the dimming circuit is delayed with respect to the switching command. There was a problem. In addition, although the overall illumination distribution in the lighting area can be adjusted, it is difficult to adjust the lighting area partially, such as making certain sections darker or brighter. There was also a problem that the light pattern was limited to a very small number.
本発明の目的は、上記課題を解決し、簡単な構成で半導体光源の光量を高速に切り替え、照度分布を多様に調整できる車両用灯具を提供することにある。 An object of the present invention is to provide a vehicular lamp that can solve the above-described problems and can switch the amount of light of a semiconductor light source at high speed and adjust the illuminance distribution in various ways with a simple configuration.
上記課題を解決するために、本発明の車両用灯具は、半導体光源の光量を変化させ、車両周辺の照度分布を調整する灯具において、半導体光源からの光を反射するミラーと、ミラーを往復回動する走査用アクチュエータと、ミラーの運動周期を分割した複数の調光区間ごとに半導体光源のＯＮ／ＯＦＦを制御する制御手段とを備え、ミラーの周期運動に半導体光源のＯＮ／ＯＦＦ制御を組み合わせ、車両周辺の照度分布を調整することを特徴とする。 In order to solve the above-described problems, a vehicular lamp according to the present invention includes a mirror that reflects light from a semiconductor light source and a mirror that reciprocates between the mirror in a lamp that adjusts the illuminance distribution around the vehicle by changing the amount of light of the semiconductor light source. It is equipped with a moving scanning actuator and a control means for controlling the ON / OFF of the semiconductor light source for each of a plurality of dimming sections obtained by dividing the mirror's motion cycle, and the ON / OFF control of the semiconductor light source is combined with the mirror's periodic motion The illuminance distribution around the vehicle is adjusted.
また、本発明は、半導体光源のＯＮ／ＯＦＦ制御に関し、次のような制御手段を備えた車両用灯具を提供する。
（１）制御手段が、ミラーの往路と復路において、半導体光源をＯＮ／ＯＦＦするタイミングを相違させることを特徴とする車両用灯具。
（２）制御手段が、ミラーの連続する少なくとも２つの運動周期において、半導体光源をＯＮ／ＯＦＦするタイミングを相違させることを特徴とする車両用灯具。
（３）制御手段が、既定の調光プログラムに従って半導体光源のＯＮ／ＯＦＦを制御することを特徴とする車両用灯具。
（４）制御手段が、車両周辺の撮像データに基づいて半導体光源のＯＮ／ＯＦＦを制御することを特徴とする車両用灯具。
The present invention also relates to ON / OFF control of a semiconductor light source and provides a vehicular lamp provided with the following control means.
(1) The vehicular lamp characterized in that the control means makes the timing of turning on / off the semiconductor light source different between the forward path and the return path of the mirror.
(2) The vehicular lamp characterized in that the control means makes the timing for turning on / off the semiconductor light source different in at least two consecutive motion cycles of the mirror.
(3) The vehicle lamp characterized in that the control means controls ON / OFF of the semiconductor light source according to a predetermined dimming program.
(4) The vehicular lamp characterized in that the control means controls ON / OFF of the semiconductor light source based on imaging data around the vehicle.
本発明の車両用灯具によれば、ミラーの運動周期を分割し、複数の調光区間ごとに半導体光源のＯＮ／ＯＦＦを制御するので、比較的簡単な構成の制御手段を用いて、半導体光源の光量を高速に切り替えることができる。また、半導体光源のＯＮ／ＯＦＦ制御にミラーの周期運動を組み合わせることで、照明領域の部分的な調光が容易になり、車両周辺の照度分布を多様に調整することができる。 According to the vehicular lamp of the present invention, the movement cycle of the mirror is divided, and the semiconductor light source is controlled on / off for each of the plurality of light control sections. Can be switched at high speed. Further, by combining the periodic movement of the mirror with the ON / OFF control of the semiconductor light source, partial light control of the illumination area is facilitated, and the illuminance distribution around the vehicle can be variously adjusted.
以下、本発明を車両用前照灯に具体化した一実施形態を図面に基づいて説明する。図１は車両用前照灯の全体的な構成を示す。図２は前照灯の走査用アクチュエータと光源ユニットを示す。図３は前照灯の制御回路を示す。図４〜図８は前照灯の調光動作を原理的に示す。図９、図１０は前照灯に好適な配光パターンを例示する。図１１は走査用アクチュエータの変更例を示す。 Hereinafter, an embodiment in which the present invention is embodied in a vehicle headlamp will be described with reference to the drawings. FIG. 1 shows the overall configuration of a vehicle headlamp. FIG. 2 shows a headlamp scanning actuator and a light source unit. FIG. 3 shows a headlight control circuit. 4 to 8 show the dimming operation of the headlamp in principle. 9 and 10 illustrate light distribution patterns suitable for headlamps. FIG. 11 shows a modification of the scanning actuator.
図１、図２に示すように、車両用前照灯１のハウジング２は車体の前部に取り付けられ、ハウジング２の中央部にミラー３を駆動する走査用アクチュエータ４が設置されている。走査用アクチュエータ４の下側には、光源ユニット５と制御回路６とが配設され、光源ユニット５に半導体光源である一つまたは複数のＬＥＤ７と、ＬＥＤ７の光をミラー３に導くレンズや反射鏡等からなる光学系８とが設けられている。 As shown in FIGS. 1 and 2, the housing 2 of the vehicle headlamp 1 is attached to the front portion of the vehicle body, and a scanning actuator 4 that drives the mirror 3 is installed at the center of the housing 2. A light source unit 5 and a control circuit 6 are disposed below the scanning actuator 4. The light source unit 5 includes one or a plurality of LEDs 7 that are semiconductor light sources, a lens that guides the light from the LEDs 7 to the mirror 3, and a reflection. An optical system 8 composed of a mirror or the like is provided.
なお、光源ユニット５は、ハウジング２の底壁部のほか側壁部や頂壁部など、ミラー３の周辺適所に設置することができる。半導体光源として指向性の高いレーザー光源を使用する場合は、光学系８を省略して実施することも可能である。ミラー３の前方に投影レンズ９を設け、ミラー３の反射光を平行光に成形して車両前方へ投射するように構成することもできる。 Note that the light source unit 5 can be installed at a suitable location around the mirror 3 such as a side wall portion and a top wall portion in addition to the bottom wall portion of the housing 2. When using a highly directional laser light source as the semiconductor light source, the optical system 8 can be omitted. A projection lens 9 may be provided in front of the mirror 3, and the reflected light of the mirror 3 may be formed into parallel light and projected to the front of the vehicle.
走査用アクチュエータ４の基板１１には、回動体１２が垂直なトーションバー１３で支持されている。回動体１２には、表面にミラー３が設けられ、内部にコイル（図示略）が配線されている。回動体１２の左右両側には永久磁石１４が配設され、トーションバー１３と直交する磁界中でコイル電流の大きさと向きを制御することにより、ミラー３が電磁力で回動体１２と一体に左右に往復回動される。そして、ＬＥＤ７の光をミラー３で反射させ、ミラー３の反射光をアクチュエータ４でスキャンし、車両前方の照明領域に水平方向へ広がる配光パターンＰを形成するようになっている。 A rotating body 12 is supported by a vertical torsion bar 13 on the substrate 11 of the scanning actuator 4. The rotating body 12 is provided with a mirror 3 on the surface, and a coil (not shown) is wired inside. Permanent magnets 14 are disposed on both the left and right sides of the rotating body 12, and the mirror 3 is integrated with the rotating body 12 by electromagnetic force by controlling the magnitude and direction of the coil current in a magnetic field orthogonal to the torsion bar 13. Is reciprocally rotated. Then, the light of the LED 7 is reflected by the mirror 3, and the reflected light of the mirror 3 is scanned by the actuator 4 to form a light distribution pattern P that spreads horizontally in the illumination area in front of the vehicle.
図３に示すように、制御回路６には、コイル電流を調整してミラー３の周期運動を制御するミラー制御部１６と、ミラー３の周期運動に同期してＬＥＤ７のＯＮ／ＯＦＦを制御する光源制御部１７と、既定の調光プログラムを格納するメモリ１８と、調光プログラムに従ってミラー制御部１６および光源制御部１７を動作させるＣＰＵ１９とが設けられている。また、ミラー３の現在位置を検出する位置検出器２０が走査用アクチュエータ４に付設され、車載カメラ２１の撮像データを解析する画像処理装置２２が制御回路６に接続されている。 As shown in FIG. 3, the control circuit 6 controls the ON / OFF of the LED 7 in synchronization with the periodic motion of the mirror 3 and the mirror control unit 16 that controls the periodic motion of the mirror 3 by adjusting the coil current. A light source controller 17, a memory 18 for storing a predetermined dimming program, and a CPU 19 for operating the mirror controller 16 and the light source controller 17 in accordance with the dimming program are provided. In addition, a position detector 20 that detects the current position of the mirror 3 is attached to the scanning actuator 4, and an image processing device 22 that analyzes imaging data of the in-vehicle camera 21 is connected to the control circuit 6.
次に、車両用前照灯１の調光動作について説明する。この車両用前照灯１では、車両前方の照度分布を調整するにあたり、制御回路６がＬＥＤ７の点消灯をミラー３の周期運動に合わせて制御する。具体的には、図４〜図６に示すように、光源制御部１７がミラー３の運動周期（Ｔ）を例えば８分割し、配光パターンＰに４つの調光区間１〜４を設定し、各区間ごとにＬＥＤ７のＯＮ／ＯＦＦを制御する。 Next, the light control operation of the vehicle headlamp 1 will be described. In this vehicular headlamp 1, the control circuit 6 controls turning on / off of the LED 7 in accordance with the periodic motion of the mirror 3 when adjusting the illuminance distribution in front of the vehicle. Specifically, as shown in FIGS. 4 to 6, the light source control unit 17 divides the movement period (T) of the mirror 3 into, for example, eight, and sets four light control sections 1 to 4 in the light distribution pattern P. The on / off of the LED 7 is controlled for each section.
ここで、一部の調光区間を消灯する場合は、ミラー３の往路および復路の同じ調光区間でＬＥＤ７をＯＦＦする。例えば、図４に示す配光パターンＰ１において、調光区間２のみを消灯したい場合は、ミラー３が一周期の変位をする間に、往路および復路の同じ調光区間２で、それぞれＬＥＤ７をＯＦＦする。実際には、光源制御部１７がミラー周波数（Ｔ）の８倍の周波数（周期はＴ／８）で、「１」「０」「１」「１」「１」「１」「０」「１」のデジタル調光信号を出力し、ＬＥＤ７のＯＮ／ＯＦＦを切り替える。 Here, when part of the dimming section is turned off, the LED 7 is turned off in the same dimming section of the forward path and the return path of the mirror 3. For example, in the light distribution pattern P1 shown in FIG. 4, when it is desired to turn off only the dimming section 2, the LED 7 is turned off in the same dimming section 2 on the forward and return paths while the mirror 3 is displaced by one cycle. To do. Actually, the light source controller 17 has a frequency eight times the mirror frequency (T) (period is T / 8), and “1” “0” “1” “1” “1” “1” “0” “ 1 "digital dimming signal is output, and the LED 7 is switched ON / OFF.
また、一部の調光区間を減光する場合は、ミラー３の往路と復路でＬＥＤ７をＯＮ／ＯＦＦするタイミングを相違させる。例えば、図５に示す配光パターンＰ２において、調光区間２を減光したい場合は、ミラー３が一周期の変位をする間に、往路の調光区間２のみでＬＥＤ７をＯＦＦし、復路のすべての調光区間４〜１でＬＥＤ７をＯＮする。こうすれば、調光区間２に照射される光量を他の区間１，３，４に対して１／２に減少させ、照明領域の照度分布を一部分が相対的に暗くなるように調整することができる。 Further, when dimming a part of the dimming section, the timing for turning on / off the LED 7 is different between the forward path and the return path of the mirror 3. For example, in the light distribution pattern P2 shown in FIG. 5, when it is desired to dimm the light control section 2, the LED 7 is turned off only in the forward light control section 2 while the mirror 3 is displaced by one cycle, The LED 7 is turned on in all dimming sections 4 to 1. In this way, the amount of light applied to the light control section 2 is reduced to ½ of the other sections 1, 3, and 4, and the illuminance distribution in the illumination area is adjusted so that a part thereof becomes relatively dark. Can do.
調光区間ごとに光度を変える場合は、ミラー３の連続する少なくとも２つの周期において、ＬＥＤ７をＯＮ／ＯＦＦするタイミングを相違させる。例えば、図６に示す配光パターンＰ３において、４つの調光区間１〜４にそれぞれ異なる光度を与えたい場合は、先行する周期（Ｔ１）の３つの調光区間３，４，４でＬＥＤ７をＯＦＦし、後続する周期（Ｔ２）の３つの調光区間２，３，４でＬＥＤ７をＯＦＦする。こうすれば、２周期にわたってＬＥＤ７がＯＮし続ける調光区間１の光度を１とした場合、調光区間２に０．７５、調光区間３に０．５、調光区間４に０．２５と、それぞれ異なる光度比を設定し、照明領域の照度分布を段階的に変化させることができる。 When changing the luminous intensity for each dimming section, the timing for turning on / off the LED 7 is made different in at least two consecutive cycles of the mirror 3. For example, in the light distribution pattern P3 shown in FIG. 6, when it is desired to give different light intensity to the four light control sections 1 to 4, the LED 7 is turned on in the three light control sections 3, 4, and 4 in the preceding cycle (T1). The LED 7 is turned off, and the LED 7 is turned off in the three dimming sections 2, 3 and 4 in the subsequent period (T2). In this way, when the light intensity of the light control section 1 in which the LED 7 is continuously turned on for two cycles is 1, the light control section 2 is 0.75, the light control section 3 is 0.5, and the light control section 4 is 0.25. And different luminosity ratios can be set, and the illuminance distribution in the illumination area can be changed stepwise.
ところで、ミラー３が周期運動するスキャン式前照灯１では、図７（ａ）に示すように、ミラー３の速度が振幅の中央側で高くなり、振幅の両端側で低くなる。このため、図７（ｂ）に示すように、前照灯１の全点灯状態で、ミラー３の反射光が照明領域の左右両端側に偏重し、配光パターンＰ４に両端側ほど明るく中央側ほど暗い配光むらが生じやすい。しかし、本発明の車両用前照灯１によれば、前述したＬＥＤ７のＯＮ／ＯＦＦ制御を逆用して、この種の配光むらを簡単に解消することができる。 By the way, in the scanning headlamp 1 in which the mirror 3 periodically moves, as shown in FIG. 7A, the speed of the mirror 3 increases on the center side of the amplitude and decreases on both ends of the amplitude. For this reason, as shown in FIG. 7B, when the headlamp 1 is fully lit, the reflected light of the mirror 3 is deviated toward the left and right ends of the illumination area, and the light distribution pattern P4 is brighter toward the both ends. It is easy to cause uneven light distribution. However, according to the vehicle headlamp 1 of the present invention, the above-described ON / OFF control of the LED 7 can be reversed to easily eliminate this kind of uneven light distribution.
例えば、図８（ａ）に示すように、光源制御部１７がミラー３の２周期（Ｔ１，Ｔ２）を制御単位とし、半周期を８分割し、振幅の両端に近い調光区間１，８ほどＬＥＤ７をＯＦＦする回数を増やし、振幅の中央に近い調光区間４，５ほどＬＥＤ７をＯＮする回数を増やす。そして、図８（ｂ）に示すように、全周期を通し、調光区間１，８の光度比を０．２５に、調光区間２，７の光度比を０．５に、調光区間３，６の光度比を０．７５に、調光区間４，５の光度比を１に調整する。こうすれば、ミラー３の周期運動に伴う光量の多寡をＬＥＤ７の点消灯によって補償し、図８（ｃ）に示すように、照度分布が均一な配光パターンＰ５を形成できる。 For example, as shown in FIG. 8A, the light source control unit 17 uses the two periods (T1, T2) of the mirror 3 as a control unit, divides the half period into eight, and the dimming sections 1, 8 close to both ends of the amplitude. The number of times that the LED 7 is turned off is increased, and the number of times that the LED 7 is turned on is increased in the dimming sections 4 and 5 that are closer to the center of the amplitude. Then, as shown in FIG. 8B, the light intensity ratio of the light control sections 1 and 8 is set to 0.25, the light intensity ratio of the light control sections 2 and 7 is set to 0.5, and the light control section through the entire period. The luminous intensity ratio of 3 and 6 is adjusted to 0.75, and the luminous intensity ratio of the dimming sections 4 and 5 is adjusted to 1. By so doing, the amount of light accompanying the periodic movement of the mirror 3 can be compensated by turning on and off the LED 7, and as shown in FIG. 8C, a light distribution pattern P5 having a uniform illuminance distribution can be formed.
この車両用前照灯１は、ミラー３の周期運動にＬＥＤ７のＯＮ／ＯＦＦ制御を組み合わせて調光を行うので、多様な配光パターンを容易に形成できる。例えば、図９に示すように、メモリ１８に予め格納された調光プログラムに従って、照明領域の中央部を明るくし、周辺部を暗くし、中央部上縁にカットラインＣＬを設けて、自動車の安全走行に適した配光パターンＰ６を形成できる。図１０に示すよう、車両前方の歩行者Ｍを車載カメラ２１で撮像し、画像処理装置２２の解析データに基づいて歩行者Ｍを含む調光区間を減光し、歩行者Ｍが眩しくないような配光パターＰ７を形成できる。 Since the vehicle headlamp 1 performs dimming by combining ON / OFF control of the LED 7 with the periodic motion of the mirror 3, various light distribution patterns can be easily formed. For example, as shown in FIG. 9, according to a dimming program stored in the memory 18 in advance, the central part of the illumination area is brightened, the peripheral part is darkened, and a cut line CL is provided at the upper edge of the central part. The light distribution pattern P6 suitable for safe driving can be formed. As shown in FIG. 10, a pedestrian M in front of the vehicle is imaged by the in-vehicle camera 21, and the dimming section including the pedestrian M is dimmed based on the analysis data of the image processing device 22 so that the pedestrian M is not dazzled. A light distribution pattern P7 can be formed.
本発明は上記実施例に限定されるものではなく、以下に例示するように、発明の趣旨を逸脱しない範囲で、車両用灯具の種類や前照灯各部の構成を適宜変更して実施することも可能である。
（１）上記実施例の調光装置をテールランプ、ストップランプ、フォグランプ、ターンシグナルランプなど、自動車や鉄道車両の各種灯具に適用すること。
（２）図１１に示すように、ミラー３を直交２軸の走査用アクチュエータ３１で駆動すること。このアクチュエータ３１は内外二つの回動体３２，３３を互いに直交する方向へ回動可能に備え、内側の回動体３２の表面にミラー３が設けられている。
（３）走査用アクチュエータに静電駆動方式のアクチュエータを使用すること。
（４）前照灯ハウジング２の内部に複数の走査用アクチュエータ４を並設し、複数のミラー３の周期運動を複合させ、より多彩な配光パターンを形成すること。
（５）前照灯１の光源にＬＥＤ等の半導体光源と、白熱電球や放電灯の放電灯とを併用すること。
The present invention is not limited to the above-described embodiment, and as will be exemplified below, the type of vehicle lamp and the configuration of each part of the headlamp are appropriately changed and implemented without departing from the spirit of the invention. Is also possible.
(1) The light control device of the above embodiment is applied to various lamps for automobiles and railway vehicles such as tail lamps, stop lamps, fog lamps, and turn signal lamps.
(2) As shown in FIG. 11, the mirror 3 is driven by an orthogonal biaxial scanning actuator 31. The actuator 31 includes inner and outer rotating bodies 32 and 33 that can rotate in directions orthogonal to each other, and a mirror 3 is provided on the surface of the inner rotating body 32.
(3) Use an electrostatic drive type actuator for the scanning actuator.
(4) A plurality of scanning actuators 4 are arranged inside the headlight housing 2 and the periodic motions of the plurality of mirrors 3 are combined to form a wider variety of light distribution patterns.
(5) A semiconductor light source such as an LED and a discharge lamp such as an incandescent bulb or a discharge lamp are used in combination as the light source of the headlamp 1.
１ 車両用前照灯
３ ミラー
４ 走査用アクチュエータ
５ 光源ユニット
６ 制御回路
７ ＬＥＤ
１６ ミラー制御部
１７ 光源制御部
３１ 走査用アクチュエータ
DESCRIPTION OF SYMBOLS 1 Vehicle headlamp 3 Mirror 4 Scanning actuator 5 Light source unit 6 Control circuit 7 LED
16 Mirror control unit 17 Light source control unit 31 Actuator for scanning
Claims (5)
半導体光源からの光を反射するミラーと、ミラーを往復回動する走査用アクチュエータと、ミラーの運動周期を分割した複数の調光区間ごとに半導体光源のＯＮ／ＯＦＦを制御する制御手段とを備え、ミラーの周期運動に半導体光源のＯＮ／ＯＦＦ制御を組み合わせ、前記照度分布を調整することを特徴とする車両用灯具。 In the vehicular lamp that adjusts the illuminance distribution around the vehicle by changing the light quantity of the semiconductor light source,
A mirror that reflects light from the semiconductor light source, a scanning actuator that reciprocally rotates the mirror, and a control unit that controls ON / OFF of the semiconductor light source for each of a plurality of light control sections obtained by dividing the movement period of the mirror. A vehicle lamp characterized by adjusting the illuminance distribution by combining ON / OFF control of a semiconductor light source with periodic movement of a mirror.
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| JP2008164325A JP5118564B2 (en) | 2008-06-24 | 2008-06-24 | Vehicle lighting |
| DE102009025678.4A DE102009025678B4 (en) | 2008-06-24 | 2009-06-19 | Lighting device for a vehicle |
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| JP2008164325A JP5118564B2 (en) | 2008-06-24 | 2008-06-24 | Vehicle lighting |
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| JP5118564B2 true JP5118564B2 (en) | 2013-01-16 |
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| JP2008164325A Active JP5118564B2 (en) | 2008-06-24 | 2008-06-24 | Vehicle lighting |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102009025678A1 (en) | 2010-01-21 |
| JP2010006109A (en) | 2010-01-14 |
| DE102009025678B4 (en) | 2017-08-31 |
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