JP2004331016A - Led head lamp for bicycle - Google Patents

Led head lamp for bicycle Download PDF

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Publication number
JP2004331016A
JP2004331016A JP2003133584A JP2003133584A JP2004331016A JP 2004331016 A JP2004331016 A JP 2004331016A JP 2003133584 A JP2003133584 A JP 2003133584A JP 2003133584 A JP2003133584 A JP 2003133584A JP 2004331016 A JP2004331016 A JP 2004331016A
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JP
Japan
Prior art keywords
led
bicycle
power
light
lighting control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003133584A
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Japanese (ja)
Inventor
Kazumitsu Futami
和光 二見
Tsutomu Sekimoto
力 関本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Morita Miyata Corp
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Miyata Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miyata Industry Co Ltd filed Critical Miyata Industry Co Ltd
Priority to JP2003133584A priority Critical patent/JP2004331016A/en
Publication of JP2004331016A publication Critical patent/JP2004331016A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED head lamp for a bicycle capable of obtaining sufficient irradiation illuminance and giving high visual recognition to others. <P>SOLUTION: This LED head lamp for a bicycle has a battery as a power supply, and has a vibration sensor in an automatic lighting control circuit. A lamp power supply is a power generating dynamo, is connected to the automatic lighting control circuit through a rectification smoothing circuit and a voltage limiting circuit, and drives a typical LED simple substance at high power and super high brightness. A diffusion condensing lens is arranged faced to the irradiation surface of the typical LED, and an emitted light beam with high power and super high brightness of the typical LED is diffused in a required area, and a projected light is condensed in a moderate diffusion direction to project the light to a required front distance at a required illuminance. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明が属する技術分野】
この発明は、充分な照射照度と、他者から高い視認とが得られる自転車用LEDヘッドランプに関するものである。
【0002】
【従来の技術】
従来、自転車用ヘッドランプには、フィラメント電球(キセノン、クリプトン、ハロゲン等を含む)型と、複数個のLEDを搭載する複数個配列LED型とがある。
【0003】
【発明が解決しようとする課題】
従来のフィラメント電球(キセノン、クリプトン、ハロゲン等を含む)を光源としたダイナモ発電式自転車用ヘッドランプは、要求される照度規格を満足するためには、電球の定格電力が2.4Wと大きいため、発電の際に発生するダイナモ回転軸の回転抵抗およびそれを駆動する車輪の回転抵抗が大きくなり、ライダーへの負担が大きかった。
【0004】
同じく、従来のフィラメント電球を光源としたダイナモ発電式自転車用ヘッドランプは、電球の定格電圧(定格照度で点灯できる電圧)が6Vであるため、自転車用ヘッドランプの照度規格値で電球を点灯させるには、自転車を約15km/hの速度で、走行させる必要があった。これは、15km/h未満の速度では充分なランプ照度が得られず、自転車の一般的な常用速度11〜13km/hでは照度不足で危険な走行を強いられていた。
【0005】
従来のLED式ヘッドランプは、LED素子当たりの照度は極めて低いため、一つのランプの中に複数個(3個〜6個)のLEDを搭載してその照度不足を補っていたが、自転車用ヘッドランプの照度規格を満すには至っていなかった。
【0006】
従来のLED式ヘッドランプは、LEDの消費電流が30mAと小さいため、マンガン乾電池やアルカリ乾電池を電源としていたが、充分な照度を得るためには消費電流が350mAと大きくなるため、上記乾電池を電源とした場合、消費寿命が1時間から2時間程度と極めて短くなり、実用化が困難であった。
【0007】
この発明は、これらの欠点を解消し、さらに自転車用ヘッドランプとして画期的機能、効果を付加することを目的になされたものである
【0008】
【課題を解決するための手段】
高出力LEDの単体と電源とを、少なくとも光センサーを具えて使用時を認識し自動的に点灯する自動点灯制御回路を介して接続してなる自転車用LEDヘッドランプにある。
【0009】
前記電源は電池で、自動点灯制御回路には、振動センサーを付加してもよいものである。
【0010】
前記電源は発電ダイナモで、整流平滑回路、電圧制限回路を経て自動点灯制御回路に接続してもよいものである。
【0011】
通常のLEDの単体に、そのLEDの定格電圧の所要倍に電源の電圧をアップする電圧昇圧回路を経て、その昇圧電圧を、少なくとも光センサーを具えて使用時を認識し自動的に点灯する自動点灯制御回路を介して接続し、通常のLEDの単体を高出力超高輝度に駆動して点灯してなる自転車用LEDヘッドランプにある。
【0012】
通常のLEDの単体の前記電源は電池で、自動点灯制御回路には、振動センサーを付加してもよいものである。
【0013】
通常のLEDの単体の前記電源は発電ダイナモでもよいものである。
【0014】
前記高出力LEDまたは通常のLEDの照射面に対面して拡散集光レンズを配備し、高出力LEDの照射光または通常のLEDの高出力超高輝度の照射光を所要面積に拡散し、照射光を緩やかな拡散方向に集光して所要前方距離に所要照度に投光してもよいものである。
【0015】
前記拡散集光レンズにより照射光を、一定距離に設けたスクリーンの投射光を円形から上半が中心垂線を中心とする所要縦幅に集中してもよいものである。
【0016】
前記拡散集光レンズにより照射光を、一定距離に設けたスクリーンに十字ラインに集中する照射パターンとしてもよいものである。
【0017】
【発明の実施の形態】
通常のLEDの単体に、そのLEDの定格電圧の所要倍に発電ダイナモの電源を整流平滑回路、電圧制限回路、電圧をアップする電圧昇圧回路を経て、その昇圧電圧を、少なくとも光センサーを具えて使用時を認識し自動的に点灯する自動点灯制御回路を介して接続し、通常のLEDの単体を高出力超高輝度に駆動し、通常のLEDの照射面に対面して拡散集光レンズを配備し、通常のLEDの高出力超高輝度の照射光を所要面積に拡散し、投射光を緩やかな拡散方向に集光して所要前方距離に所要照度に照射してなる自転車用LEDヘッドランプ。
【0018】
【実施例】
以下、この発明の自転車用LEDヘッドランプを実施例を示す図面により説明すると、図1は、第1実施例の自転車用LEDヘッドランプ1であって、高出力LED2の単体に、電池3を電源とし、光センサー4および振動センサー5を具えて使用時を認識し、自動的に点灯する自動点灯制御回路6を接続してなるものである。
【0019】
次に、図2は、第2実施例の自転車用LEDヘッドランプ7であって、高出力LED2の単体に、発電ダイナモ8を電源とし、整流平滑回路9、電圧制限回路10、光センサー4を具えた自動点灯制御回路11を接続してなるものである。
【0020】
次に、図3は、第3実施例の自転車用LEDヘッドランプ12であって、通常のLED13の単体に、電池3を電源とし、電圧昇圧回路14を具え、かつ、光センサー4および振動センサー5を具えて使用時を認識し、昇圧電圧を自動的に給電し、高出力超高輝度に駆動する自動点灯制御回路15を接続してなるものである。
【0021】
次に、図4は、第4実施例の自転車用LEDヘッドランプ16であって、通常のLED13の単体を、発電ダイナモ8を電源とし、整流平滑回路9、電圧制限回路10、電圧昇圧回路17を具え、かつ、光センサー4を具えて使用時を認識し、昇圧電圧を自動的に給電し、高出力超高輝度に駆動する自動点灯制御回路18を接続してなるものである。
【0022】
前記高出力LED2および通常のLED13のいずれのLED素子も小型であるため、照射光を所要面積に拡散し、所要前方距離に到達して所要面積に所要の照度を得るために投射光を緩やかな拡散方向に集光する必要があるため、前記第1、第2実施例の高出力LED2および第3、第4実施例の通常のLED13の直近に特別に設計した拡散集光レンズ19をそれぞれ対置している。
【0023】
前記拡散集光レンズ19により照射光は、図6に示すように、一定距離に設けたスクリーン上で円形照射パターン20になる。そして、自転車用ヘッドランプの照度規格値(JIS C 9502 5.1.1(b)では、5m前方のスクリーンに照射させたとき、Aの照度は400cd以上、B、C、D、Eの照度は平均100cd以上となっており、これらを満足できる。
【0024】
前記拡散集光レンズ19を工夫することにより、図7に示すように、照射光の上半を、その中心垂線に沿って所要幅に集中し、道路面を優先して高照度に照射する下半優先照射パターン21を得ることができる。
【0025】
また、同じく、図9に示すように、中心垂線と中心水平線の十字ライン付近に限定した十字照射パターン22としてもよく、いずれも照射光の照射範囲を集中して、照射光の照度をさらにあげることができる。
【0026】
図10は、自転車の走行速度と発電ダイナモ出力電圧の表示図面である。この発電特性から高出力LED2および通常のLED13を高出力超高輝度に点灯する出力電圧3Vの電力を時速7kmから得ることができることがわかる。
【0027】
【発明の効果】
この発明の自転車用LEDヘッドランプは、以上のように構成されるから、1個のLED素子により、自転車用ヘッドランプの照度規格値を満足することができ、自転車用LEDヘッドランプを始めて実用化するものである。
【0028】
この発明の自転車用LEDヘッドランプは、LED素子1個を光源とし、定格電圧が3.3ボルトと低いため、自転車用発電ダイナモと組み合わせて、点灯した場合、速度7km/hの前後で自転車用ヘッドランプの照度規格値に達する照度を得て、低速走行から明るく点灯することができ、極めて低速走行時から安全な走行が可能となり、従来のフィラメント電球(キセノン、クリプトン、ハロゲン等)を光源としたダイナモ発電式自転車用ヘッドランプ時に比較してライダーの負担が大幅に軽減されるものである。
【0029】
また、この発明の自転車用LEDヘッドランプは、LED素子1個のLEDを光源とするから、定格電力が1Wもしくは2Wと低いため、従来の自転車用発電ダイナモを使用してもダイナモ回転軸および車輪の回転抵抗が小さくなり、ライダーの負担を軽減することができる。
【0030】
また、ダイナモ回転軸に取付けられているローラーの外径が従来のものより大きく、軽く回すことができる出力電力の小さいダイナモと組み合わせても、充分な照度得ることができ、ライダーへの負担が軽減され軽快に走行ができるものである。
【0031】
また、この発明の自転車用LEDヘッドランプは、LED素子1個のLEDでは消費電流が350mAと大きいが電源を自転車用発電ダイナモとすることで実用化したものである。
【0032】
LED素子には指向性が強く、光源後方への照射がほとんどないため、従来のフィラメント電球(キセノン、クリプトン、ハロゲン等)を光源としたヘッドランプで使用されていた光源後方の反射鏡を使用せずに、充分な前方照射を得ることができ、この発明の自転車用LEDヘッドランプは、部品点数の削減およびコストの低減を実現した。
【0033】
従来のフィラメント電球(キセノン、クリプトン、ハロゲン等)を光源としたヘッドランプでは、電球の寿命が60時間であったが、この発明の自転車用LEDヘッドランプは、当該通常のLEDは、寿命が10万時間と長いため実用的には交換を不要にできる。また、通常のLEDを高出力超高輝度に駆動して発光しても、自転車の耐久期間において、自転車のライトの点灯時間は、トータルでも何百時間であるので全く問題がない。
【0034】
LED素子は発熱が少ないためランプ内の放熱スペースが小さくなり、寸法も小型であることから、この発明の自転車用LEDヘッドランプは、ヘッドランプ全体の寸法を従来のフィラメント電球(キセノン、クリプトン、ハロゲン等)を光源としたヘッドランプより小型にすることができる。これにより、ヘッドランプのデザイン自由度が大幅に広がる。また、ヘッドランプの角度調整範囲も大幅に広がる。
【0035】
LED素子による照射光は、視認性に優れているので、容易に発見されて交通安全に寄与するものである。
【0036】
よって、この発明の自転車用LEDヘッドランプの電源は、ハブダイナモ(自転車ハブに内臓された発電ダイナモ)およびブロックダイナモ(自転車のタイヤまたはリムでローラーを駆動する発電ダイナモ)等のあらゆる種類の自転車用発電ダナモを使用することができる。
【図面の簡単な説明】
【図1】この発明の自転車用LEDヘッドランプに高出力LEDの単体を電池により点灯する第1実施例を示す点灯制御ブロック回路である。
【図2】同じく、高出力LEDの単体を発電ダイナモにより点灯する第2実施例を示す点灯制御ブロック回路である。
【図3】この発明の自転車用LEDヘッドランプに通常のLEDの高出力超高輝度点灯LEDの単体を電池により点灯する第3実施例を示す点灯制御ブロック回路である。
【図4】同じく、通常のLEDの高出力超高輝度点灯のLEDの単体を発電ダイナモにより点灯する第4実施例を示す点灯制御ブロック回路である。
【図5】短焦点レンズを高出力LEDおよび通常のLEDの高出力超高輝度点灯のLEDに組み合わせて照射光を拡散および集光する実施例を示す側面図である。
【図6】短焦点レンズを高出力LEDおよび通常のLEDの高出力超高輝度点灯のLEDに組み合わせて照射光を拡散および集光する実施例の第1配光例図である。
【図7】同じく、第2配光例図である。
【図8】同じく、第3配光例図である。
【図9】この発明の自転車用LEDヘッドランプの具体的実施例を一部切欠き断面側面図である。
【図10】図10は、自転車の走行速度と発電ダイナモ出力電圧の特性を示す図面である。
【符号の説明】
1 自転車用LEDヘッドランプ
2 高出力LED
3 電池
4 光センサー
5 振動センサー
6 自動点灯制御回路
7 自転車用LEDヘッドランプ
8 発電ダイナモ
9 整流平滑回路
10 電圧制限回路
11 自動点灯制御回路
12 自転車用LEDヘッドランプ
13 通常のLED
14 電圧昇圧回路
15 自動点灯制御回路
16 自転車用LEDヘッドランプ
17 電圧昇圧回路
18 自動点灯制御回路
19 拡散集光レンズ
20 円形照射パターン
21 下半優先照射パターン
22 十字形照射パターン
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bicycle LED headlamp capable of obtaining sufficient irradiation illuminance and high visibility from others.
[0002]
[Prior art]
Conventionally, there are two types of bicycle headlamps: filament bulbs (including xenon, krypton, halogen, etc.) and multiple-arrangement LED types having a plurality of LEDs mounted thereon.
[0003]
[Problems to be solved by the invention]
A conventional dynamo power generation bicycle headlamp using a filament light bulb (including xenon, krypton, halogen, etc.) as a light source has a large rated power of 2.4 W in order to satisfy a required illuminance standard. In addition, the rotational resistance of the dynamo rotating shaft and the rotational resistance of the wheels driving the dynamo rotating shaft generated during power generation are increased, and the burden on the rider is increased.
[0004]
Similarly, in a conventional dynamo power generation type bicycle headlamp using a filament light bulb as a light source, the rated voltage of the bulb (a voltage that can be turned on at the rated illuminance) is 6 V, so that the bulb is turned on with the illuminance standard value of the bicycle headlamp. Needed to run the bicycle at a speed of about 15 km / h. At a speed of less than 15 km / h, sufficient lamp illuminance could not be obtained, and at a general bicycle speed of 11 to 13 km / h, the illuminance was insufficient and a dangerous driving was forced.
[0005]
The conventional LED type headlamp has a very low illuminance per LED element, so a plurality of (3 to 6) LEDs are mounted in one lamp to compensate for the lack of illuminance. It did not meet the illuminance standard of the headlamp.
[0006]
Conventional LED headlamps use a manganese battery or an alkaline battery as the power supply because the current consumption of the LED is as small as 30 mA. However, in order to obtain sufficient illuminance, the current consumption is as large as 350 mA, so In this case, the consumption life was extremely short, from about 1 hour to about 2 hours, and practical use was difficult.
[0007]
The present invention has been made to solve these drawbacks and to provide an epoch-making function and effect as a bicycle headlamp.
[Means for Solving the Problems]
A bicycle LED headlamp has a single high-power LED and a power supply connected via an automatic lighting control circuit that includes at least a light sensor and recognizes the time of use and automatically lights up.
[0009]
The power source is a battery, and a vibration sensor may be added to the automatic lighting control circuit.
[0010]
The power source may be a power generation dynamo, which may be connected to an automatic lighting control circuit via a rectifying / smoothing circuit and a voltage limiting circuit.
[0011]
A normal LED is passed through a voltage booster circuit that raises the power supply voltage to a required multiple of the rated voltage of the LED. A bicycle LED headlamp which is connected via a lighting control circuit and driven by driving a single normal LED at high output and superbrightness.
[0012]
The power source of a single normal LED is a battery, and a vibration sensor may be added to the automatic lighting control circuit.
[0013]
The power source of a normal LED alone may be a power generation dynamo.
[0014]
A diffusion condensing lens is provided to face the irradiation surface of the high-power LED or the normal LED, and the irradiation light of the high-power LED or the high-power ultra-high-brightness irradiation light of the normal LED is diffused to a required area, and irradiated. Light may be condensed in a gentle diffusion direction and projected to a required illuminance at a required forward distance.
[0015]
The diffused condensing lens may concentrate the irradiation light on a screen provided at a certain distance to a required vertical width whose center is perpendicular to the central perpendicular from the circle.
[0016]
The diffused condensing lens may form an irradiation pattern in which irradiation light is concentrated on a cross line on a screen provided at a fixed distance.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
An ordinary LED is provided with a rectifying / smoothing circuit, a voltage limiting circuit, and a voltage boosting circuit for increasing the voltage of the power supply of the power generation dynamo to a required multiple of the rated voltage of the LED. Connected via an automatic lighting control circuit that automatically recognizes when the device is in use and automatically lights up, drives a normal LED unit with high output and super-brightness, and sets a diffuse condensing lens facing the normal LED illumination surface. LED headlights for bicycles that are deployed, diffuse the high-power, super-high-brightness irradiation light of ordinary LEDs to a required area, collect the projection light in a gentle diffusion direction, and irradiate the required illuminance at a required forward distance. .
[0018]
【Example】
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a bicycle LED headlamp according to the present invention will be described with reference to the drawings showing an embodiment. FIG. 1 shows a bicycle LED headlamp 1 according to a first embodiment. An automatic lighting control circuit 6, which includes a light sensor 4 and a vibration sensor 5, recognizes the use time, and turns on automatically.
[0019]
Next, FIG. 2 shows a bicycle LED headlamp 7 according to a second embodiment, in which a single high-power LED 2 is provided with a power generation dynamo 8 as a power source, a rectifying and smoothing circuit 9, a voltage limiting circuit 10, and an optical sensor 4. The automatic lighting control circuit 11 provided is connected.
[0020]
Next, FIG. 3 shows a bicycle LED headlamp 12 according to a third embodiment, in which an ordinary LED 13 is provided with a battery 3 as a power source, a voltage boosting circuit 14, a light sensor 4 and a vibration sensor. 5, an automatic lighting control circuit 15 that recognizes the time of use, automatically supplies a boosted voltage, and drives to a high output and super-brightness.
[0021]
Next, FIG. 4 shows a bicycle LED headlamp 16 according to a fourth embodiment, in which a single normal LED 13 uses a power generation dynamo 8 as a power source, a rectifying and smoothing circuit 9, a voltage limiting circuit 10, a voltage boosting circuit 17 and the like. And an automatic lighting control circuit 18 that includes the optical sensor 4, recognizes the time of use, automatically supplies a boosted voltage, and drives to high output and ultra-brightness.
[0022]
Since both the high-power LED 2 and the normal LED 13 are small in size, the projection light is diffused in order to diffuse the irradiation light to a required area and reach a required front distance to obtain a required illuminance in the required area. Since it is necessary to condense light in the diffusion direction, a specially designed diffusion light condensing lens 19 is placed in close proximity to the high-power LED 2 of the first and second embodiments and the normal LED 13 of the third and fourth embodiments. are doing.
[0023]
As shown in FIG. 6, the irradiation light from the diffusion condenser lens 19 becomes a circular irradiation pattern 20 on a screen provided at a fixed distance. Then, according to the illuminance standard value of the bicycle headlamp (JIS C 9502 5.1.1 (b), when illuminating the screen 5 m ahead, the illuminance of A is 400 cd or more, and the illuminance of B, C, D, and E Is 100 cd or more on average, and these can be satisfied.
[0024]
By devising the diffuse condensing lens 19, as shown in FIG. 7, the upper half of the irradiating light is concentrated to a required width along the center perpendicular line, and the road surface is preferentially irradiated with high illuminance. A semi-priority irradiation pattern 21 can be obtained.
[0025]
Further, similarly, as shown in FIG. 9, a cross irradiation pattern 22 limited to the vicinity of the cross line between the center perpendicular line and the center horizontal line may be used. In each case, the irradiation range of the irradiation light is concentrated to further increase the illuminance of the irradiation light. be able to.
[0026]
FIG. 10 is a display diagram of the running speed of the bicycle and the output voltage of the dynamo. From this power generation characteristic, it can be seen that power of an output voltage of 3 V for turning on the high-output LED 2 and the normal LED 13 with high output and super-brightness can be obtained from 7 km / h.
[0027]
【The invention's effect】
Since the bicycle LED headlamp of the present invention is configured as described above, a single LED element can satisfy the illuminance standard value of the bicycle headlamp, and the bicycle LED headlamp is put into practical use for the first time. Is what you do.
[0028]
The bicycle LED headlamp of the present invention uses a single LED element as a light source and has a low rated voltage of 3.3 volts. Therefore, when lit in combination with a bicycle dynamo, the bicycle LED headlamp has a speed of about 7 km / h. The illuminance that reaches the illuminance standard value of the headlamp can be obtained, and it can be brightly lit from low-speed driving, enabling safe driving from extremely low-speed driving, and using a conventional filament bulb (xenon, krypton, halogen, etc.) as a light source. This significantly reduces the burden on the rider as compared to the dynamo-powered bicycle headlamp.
[0029]
Further, since the bicycle LED headlamp of the present invention uses the LED of one LED element as the light source, the rated power is as low as 1 W or 2 W. Therefore, even if a conventional bicycle power generation dynamo is used, the dynamo rotation shaft and the wheel are used. Of the rider can be reduced, and the burden on the rider can be reduced.
[0030]
In addition, the outer diameter of the roller attached to the dynamo rotation shaft is larger than the conventional one, and even when combined with a dynamo with a small output power that can be turned lightly, sufficient illuminance can be obtained, reducing the burden on the rider It can be run lightly.
[0031]
The LED headlamp for a bicycle according to the present invention has a large current consumption of 350 mA for one LED element, but has been put to practical use by using a power generation dynamo for a bicycle.
[0032]
Since the LED element has strong directivity and hardly emits light to the rear of the light source, use a reflector behind the light source, which has been used in a headlamp using a conventional filament bulb (xenon, krypton, halogen, etc.) as a light source. In addition, sufficient forward illumination can be obtained, and the LED headlamp for a bicycle of the present invention achieves a reduction in the number of parts and a reduction in cost.
[0033]
In a headlamp using a conventional filament light bulb (xenon, krypton, halogen, etc.) as a light source, the life of the light bulb was 60 hours. However, in the bicycle LED headlamp of the present invention, the ordinary LED has a life of 10 hours. Since it is a long time of 10,000 hours, replacement can be practically unnecessary. Further, even if a normal LED is driven to emit light with high output and super-brightness, there is no problem since the lighting time of the bicycle light is hundreds of hours in total during the durability period of the bicycle.
[0034]
Since the LED element generates less heat, the heat radiating space in the lamp is reduced and the size is small. Therefore, the LED headlamp for a bicycle according to the present invention is designed so that the overall size of the headlamp is reduced by using a conventional filament bulb (xenon, krypton, halogen). ) Can be made smaller than a headlamp using a light source. As a result, the degree of freedom in designing the headlamp greatly increases. Also, the angle adjustment range of the headlamp is greatly expanded.
[0035]
The irradiation light from the LED element is excellent in visibility and is easily found and contributes to traffic safety.
[0036]
Therefore, the power source of the bicycle LED headlamp of the present invention can be used for all kinds of bicycles such as a hub dynamo (power generation dynamo built in a bicycle hub) and a block dynamo (power generation dynamo driving a roller with a bicycle tire or rim). Power generation dynamo can be used.
[Brief description of the drawings]
FIG. 1 is a lighting control block circuit showing a first embodiment in which a single high-power LED is turned on by a battery in a bicycle LED headlamp of the present invention.
FIG. 2 is a lighting control block circuit showing a second embodiment for lighting a single high-power LED by a power generation dynamo.
FIG. 3 is a lighting control block circuit showing a third embodiment in which a single high-power ultra-high-brightness lighting LED of a normal LED is turned on by a battery in the bicycle LED headlamp of the present invention.
FIG. 4 is a lighting control block circuit showing a fourth embodiment for lighting a single LED of a normal LED with high output and super-brightness by a power generation dynamo.
FIG. 5 is a side view showing an embodiment in which a short focal length lens is combined with a high-output LED and a high-output ultra-high-brightness LED of a normal LED to diffuse and converge irradiation light.
FIG. 6 is a first light distribution example of an embodiment in which a short focus lens is combined with a high-power LED and a high-power ultra-high-brightness LED of a normal LED to diffuse and converge irradiation light.
FIG. 7 is also a second light distribution example diagram.
FIG. 8 is also a third light distribution example diagram.
FIG. 9 is a partially cutaway cross-sectional side view of a specific embodiment of the bicycle LED headlamp of the present invention.
FIG. 10 is a diagram showing characteristics of a running speed of a bicycle and a power generation dynamo output voltage.
[Explanation of symbols]
1 LED headlamp for bicycle 2 High power LED
Reference Signs List 3 Battery 4 Optical sensor 5 Vibration sensor 6 Automatic lighting control circuit 7 Bicycle LED head lamp 8 Power generation dynamo 9 Rectifying smoothing circuit 10 Voltage limiting circuit 11 Automatic lighting control circuit 12 Bicycle LED head lamp 13 Normal LED
14 Voltage boosting circuit 15 Automatic lighting control circuit 16 LED head lamp for bicycle 17 Voltage boosting circuit 18 Automatic lighting control circuit 19 Diffuse condenser lens 20 Circular illumination pattern 21 Lower half priority illumination pattern 22 Cross illumination pattern

Claims (9)

高出力LEDの単体と電源とを、少なくとも光センサーを具えて使用時を認識し自動的に点灯する自動点灯制御回路を介して接続してなる自転車用LEDヘッドランプ。A bicycle LED headlamp comprising a high-power LED unit and a power supply connected via an automatic lighting control circuit that includes at least a light sensor and recognizes the use time and automatically lights up. 電源が電池で、自動点灯制御回路には、振動センサーを付加してなる請求項1の自転車用LEDヘッドランプ。The bicycle LED headlamp according to claim 1, wherein the power source is a battery, and a vibration sensor is added to the automatic lighting control circuit. 電源が発電ダイナモで、整流平滑回路、電圧制限回路を経て自動点灯制御回路に接続してなる請求項1の自転車用LEDヘッドランプ。2. The bicycle LED headlamp according to claim 1, wherein the power supply is a power generation dynamo and connected to an automatic lighting control circuit via a rectifying and smoothing circuit and a voltage limiting circuit. 通常のLEDの単体に、そのLEDの定格電圧の所要倍に電源の電圧をアップする電圧昇圧回路を経て、その昇圧電圧を、少なくとも光センサーを具えて使用時を認識し自動的に点灯する自動点灯制御回路を介して接続し、通常のLEDの単体を高出力超高輝度に駆動して点灯してなる自転車用LEDヘッドランプ。A normal LED is passed through a voltage booster circuit that raises the power supply voltage to a required multiple of the rated voltage of the LED. A bicycle LED headlamp connected via a lighting control circuit and lit by driving a single normal LED to high output and superbrightness. 電源が電池で、自動点灯制御回路には、振動センサーを付加してなる請求項4の自転車用LEDヘッドランプ。5. The bicycle LED headlamp according to claim 4, wherein the power source is a battery and a vibration sensor is added to the automatic lighting control circuit. 電源が発電ダイナモである請求項4の自転車用LEDヘッドランプ。The bicycle LED headlamp according to claim 4, wherein the power source is a power generation dynamo. 前記高出力LEDまたは通常のLEDの照射面に対面して拡散集光レンズを配備し、高出力LED発光光線または通常のLEDの高出力超高輝度の照射光を所要面積に拡散し、投射光を緩やかな拡散方向に集光して所要前方距離に所要照度に投光してなる請求項1、請求項2、請求項3、請求項4、請求項5または請求項6の自転車用LEDヘッドランプ。A diffusing condenser lens is provided to face the irradiation surface of the high-power LED or the normal LED, and the high-power LED emission light or the high-power ultra-high-brightness irradiation light of the normal LED is diffused to a required area, and projected light is emitted. 7. The bicycle LED head according to claim 1, wherein the light is condensed in a gentle diffusion direction and is projected at a required illuminance at a required forward distance. lamp. 前記拡散集光レンズにより照射光を、一定距離に設けたスクリーンの投射光を円形から上半が中心垂線を中心とする所要縦幅に集中してなる請求項1、請求項2、請求項3、請求項4、請求項5または請求項6の自転車用LEDヘッドランプ。4. An irradiation light from the diffuse condensing lens, wherein projection light from a screen provided at a predetermined distance is concentrated from a circle to a required vertical width centered on a central perpendicular line. 7. The bicycle LED headlamp according to claim 4, 5, or 6. 前記拡散集光レンズにより照射光を、一定距離に設けたスクリーンに十字ラインに集中する照射パターンとしてなる、請求項1、請求項2、請求項3、請求項4、請求項5または請求項6の自転車用LEDヘッドランプ。7. The irradiation pattern in which irradiation light is concentrated on a screen provided at a predetermined distance by a cross line in the diffusion condensing lens, according to claim 1, claim 2, claim 3, claim 4, claim 5, or claim 6. LED headlamps for bicycles.
JP2003133584A 2003-05-12 2003-05-12 Led head lamp for bicycle Pending JP2004331016A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7594741B2 (en) 2005-06-17 2009-09-29 Shimano Inc. Bicycle lighting device
JP2010006150A (en) * 2008-06-25 2010-01-14 Panasonic Corp Lamp for bicycle
CN104421806A (en) * 2013-08-21 2015-03-18 苏州中元动力科技有限公司 Automatic LED lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7594741B2 (en) 2005-06-17 2009-09-29 Shimano Inc. Bicycle lighting device
JP2010006150A (en) * 2008-06-25 2010-01-14 Panasonic Corp Lamp for bicycle
CN104421806A (en) * 2013-08-21 2015-03-18 苏州中元动力科技有限公司 Automatic LED lamp

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