JPH107051A - Lighting system for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To turn on an illumination even in a light condition of the daytime by providing a cover to arbitrarily shield the incidence of the light to a light sensor in an lighting system for bicycle which is automatically turned on or turned off by the light sensor. SOLUTION: A light-receiving window 16 to lead the light to a light sensor is formed on a lower side of a head case 7. When the incident light from the light-receiving window 16 is received by the light sensor, and a lamp is not turned on when it is light, or automatically turned on when it is dark. A cover 19 which is turnably and pivotably supported by a rivet 18 is provided in the vicinity of the light-receiving window 16 in the bottom side of the head case 7. The cover 19 is turned to cover the light-receiving window 16 to shield the incidence of the light onto the light sensor. When the light-receiving window 16 is covered by the cover 19, the same condition as the nighttime is realized, and a headlamp 3 can be lit even in the daytime.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、光センサにより周
囲の明るさを検知して暗くなると自動的に点灯し明るく
なると自動的に消灯するようにした自転車用照明装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for a bicycle which detects the brightness of the surroundings with an optical sensor and automatically turns on when the brightness becomes low and turns off when the brightness becomes high.

【０００２】[0002]

【従来の技術】従来、光センサにより周囲の明るさを検
知して暗くなると自動的に点灯し明るくなると自動的に
消灯するようにした自転車用照明装置としては、実公平
３−２３３８０号公報にみられるように電源としてダイ
ナモを用いたものや、実開昭６０−９９８４３号公報に
みられるように、ダイナモの代わりに電池を用いたもの
等が知られている。2. Description of the Related Art Hitherto, Japanese Patent Publication No. 3-23380 discloses a bicycle illuminating device which detects the surrounding brightness by an optical sensor and turns on automatically when the brightness becomes low, and automatically turns off when the brightness becomes high. As can be seen, those using a dynamo as a power source and those using a battery instead of a dynamo, as seen in Japanese Utility Model Application Laid-Open No. 60-99843, are known.

【０００３】いずれのものも昼間のように周囲が明るい
場合は、濃霧などで視界が著しく低下しても照明装置を
点灯させることはできず、対向車などに自転車の位置を
知らせることができなくなり安全性に欠けるという問題
があった[0003] When the surroundings are bright such as during the daytime, the lighting device cannot be turned on even if the visibility is significantly reduced due to dense fog or the like, and the position of the bicycle cannot be notified to oncoming vehicles. There was a problem of lack of safety

【０００４】[0004]

【発明が解決しようとする課題】本発明は、簡単な構造
並びに操作にて、濃霧等視界が著しく低下した場合は、
昼間の明るい時でも点灯することができる安全性の優れ
た自転車用照明装置を得ることを課題とするSUMMARY OF THE INVENTION The present invention provides a simple structure and operation that can be used when the visibility of dense fog or the like is significantly reduced.
It is an object of the present invention to provide a highly safe bicycle lighting device that can be lit even in the daytime when it is bright.

【０００５】[0005]

【課題を解決するための手段】本発明は、光センサによ
り周囲の明るさを検知して暗くなると自動的に点灯し、
明るくなると自動的に消灯するようにした自転車用照明
装置において、光センサへの光の取り込みを任意に遮る
ことのできるカバーを設けたものである。According to the present invention, the brightness of the surroundings is detected by an optical sensor and automatically turned on when the surrounding area becomes dark,
A lighting device for a bicycle, which is automatically turned off when it becomes bright, is provided with a cover capable of arbitrarily blocking light from being taken into an optical sensor.

【０００６】自転車用照明装置として前照灯の場合であ
ると、光センサに光を導く受光窓を前照灯のヘッドケー
スに設け、この受光窓をヘッドケースの外側よりカバー
で開閉自在に覆うようにしたものである。In the case of a headlight as a bicycle lighting device, a light receiving window for guiding light to an optical sensor is provided in a head case of the head light, and the light receiving window is openably and closably covered with a cover from the outside of the head case. It is like that.

【０００７】かかる構成によれば、カバーにより受光窓
を覆って光が光センサへ導かれないようにすれば、昼間
の明るい時でも前照灯（照明装置）を点灯させることが
できる。なおここで点灯とは点滅の概念も含むものとす
る。With this configuration, the headlight (illumination device) can be turned on even in the daytime when the light is bright, if the light is not guided to the optical sensor by covering the light receiving window with the cover. Note that lighting here includes the concept of blinking.

【０００８】[0008]

【発明の実施の形態】本発明の実施例を図に基ずき説明
する。実施例の照明装置としては、前照灯を示してい
る。図１乃至図３は、電源としてダイナモを用いたもの
で、ダイナモとして、自転車の前輪１のハブに内装した
通称ハブダイナモ２を用いている。ハブダイナモに関し
ては、例えば特開平３−２５８６７３号公報に見られる
ような構造のものであり、ここでは説明を省略する。３
は前照灯で、前ホーク４の取付片５にブラケット６を介
して取り付けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. A headlight is shown as the lighting device of the embodiment. 1 to 3 show a case where a dynamo is used as a power source, and a so-called hub dynamo 2 mounted on a hub of a front wheel 1 of a bicycle is used as the dynamo. The hub dynamo has a structure as disclosed in, for example, JP-A-3-258673, and the description thereof is omitted here. 3
Denotes a headlight, which is mounted on a mounting piece 5 of the front fork 4 via a bracket 6.

【０００９】前照灯３を図２及び図３に基ずいて説明す
る。７はヘッドケ−スでその前面に前面レンズ８が装着
されている。前面レンズ８の内側には反射鏡９が装着さ
れ、反射鏡９の焦点位置には電球10が配置されている。
電球のソケット11はソケットホルダー12内に装着され
る。ソケットホルダー12には、制御基板取付用のベース
13が一体に形成されている。14は制御基板で電子部品や
電子回路が組み込まれている。この制御基板14には光セ
ンサ15が取り付けられている。ヘッドケース７の下面に
は光センサ15へ光を導く受光窓16が形成されている。受
光窓16は透明板により塞がれている。The headlight 3 will be described with reference to FIGS. Reference numeral 7 denotes a head case on which a front lens 8 is mounted. A reflecting mirror 9 is mounted inside the front lens 8, and a bulb 10 is arranged at a focal position of the reflecting mirror 9.
The bulb socket 11 is mounted in a socket holder 12. The socket holder 12 has a base for mounting the control board.
13 are integrally formed. Reference numeral 14 denotes a control board on which electronic parts and electronic circuits are incorporated. An optical sensor 15 is attached to the control board 14. A light receiving window 16 for guiding light to the optical sensor 15 is formed on the lower surface of the head case 7. The light receiving window 16 is closed by a transparent plate.

【００１０】そして、この受光窓16より入光した光を光
センサ15が受けて、周囲の明るさを検知し、明るい時は
電球10を点灯せず、暗くなった時自動的に点灯するよう
になっている。電球10へは、端子プレート17を介してハ
ブダイナモ２の電力が供給される。The light sensor 15 receives the light incident from the light receiving window 16 and detects the surrounding brightness. When the light is bright, the light bulb 10 is not turned on, and when the light becomes dark, the light is automatically turned on. It has become. Electric power of the hub dynamo 2 is supplied to the bulb 10 via the terminal plate 17.

【００１１】而して、ヘッドケース７の底面の受光窓16
の近傍には、リベット18により回動自在に枢支されたカ
バー19が設けられており、このカバー19を図３の矢印の
ように反時計方向に回動させることにより受光窓16を覆
い、光センサ15への光の取り込みを遮るようにしてい
る。20はカバー19に一体に形成した把手で、カバーを回
動する時に使う。The light receiving window 16 on the bottom of the head case 7
A cover 19 pivotally supported by a rivet 18 is provided in the vicinity of, and the light receiving window 16 is covered by turning the cover 19 counterclockwise as shown by the arrow in FIG. Light is prevented from being taken into the optical sensor 15. Reference numeral 20 denotes a handle integrally formed with the cover 19, which is used when rotating the cover.

【００１２】従って、受光窓16をカバー19で覆えば夜間
と同じ状態になって、昼間の明るい時でも、前照灯３を
点灯させることができ、昼間、濃霧等によって視界が著
しく悪くなった場合にでも点灯させて、対向車に対する
安全性を高めることができる。カバー19による覆いを解
除すれば、光センサ15による自動点灯、自動消灯を行
う。電球10は点灯の代わりに点滅させてもよい。Therefore, if the light receiving window 16 is covered with the cover 19, the state becomes the same as at night, and the headlight 3 can be turned on even in the daytime when it is bright, and the field of view is significantly deteriorated in the daytime due to dense fog. Even in such a case, it is possible to increase the safety for the oncoming vehicle by turning on the light. When the covering by the cover 19 is released, the light sensor 15 automatically turns on and off. The light bulb 10 may blink instead of lighting.

【００１３】以上の実施例では、前照灯への電源として
ダイナモ（ハブダイナモ２）を用いた場合を示したが、
ダイナモの代わりに電池を用いた前照灯にも適用するこ
とができる。図４乃至図６はその場合の実施例を示し、
前照灯21はヘッドケース22に一体的に制御回路や電池を
収納する本体ケース23が設けられ、この本体ケース23の
底部に設けた受光窓16をリベット18により枢支されたカ
バー19で覆うことができるようになっている カバ−19
や透明窓16の構造は、図２や図３で示すものと同じで、
矢印は受光窓16を塞ぐ時のカバ−19の回動方向を示す。In the above embodiment, a case was described in which a dynamo (hub dynamo 2) was used as a power supply to a headlight.
The invention can also be applied to a headlight using a battery instead of a dynamo. 4 to 6 show an embodiment in that case,
The headlamp 21 is provided with a main body case 23 for accommodating a control circuit and a battery integrally with the head case 22. The light receiving window 16 provided at the bottom of the main body case 23 is covered with a cover 19 pivotally supported by rivets 18. Cover 19 that can be used
The structure of the transparent window 16 is the same as that shown in FIGS.
Arrows indicate the direction of rotation of the cover 19 when the light receiving window 16 is closed.

【００１４】また以上の実施例では照明装置として前照
灯を示したが、前照灯に限らず、例えばテールランプに
も適用することができる。In the above embodiment, a headlight is shown as an illuminating device. However, the present invention is not limited to a headlight, and may be applied to, for example, a tail lamp.

【００１５】[0015]

【発明の効果】本発明によれば、カバーにより周囲の光
が光センサへ導かれないようにすることにより、明るい
時でも照明装置を点灯させることができるので、昼間、
濃霧等によって視界が著しく悪くなった場合に点灯させ
て、対向車に対する安全性を高めることができる。そし
て、構造的にみても又操作的にみても頗簡単にできるも
のである。According to the present invention, the illumination device can be turned on even when it is bright by preventing surrounding light from being guided to the optical sensor by the cover.
When the visibility is significantly deteriorated due to dense fog or the like, the light is turned on to enhance the safety for oncoming vehicles. And, it is very simple in terms of structure and operation.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の照明装置を取り付けた自転車の斜視図
である。FIG. 1 is a perspective view of a bicycle to which a lighting device of the present invention is attached.

【図２】本発明の照明装置の縦断面図である。FIG. 2 is a longitudinal sectional view of the lighting device of the present invention.

【図３】同照明装置の底面図である。FIG. 3 is a bottom view of the lighting device.

【図４】本発明の他の実施例の照明装置を取り付けた自
転車の斜視図である。FIG. 4 is a perspective view of a bicycle to which a lighting device according to another embodiment of the present invention is attached.

【図５】同照明装置の側面図である。FIG. 5 is a side view of the lighting device.

【図６】同照明装置の底面図である。FIG. 6 is a bottom view of the lighting device.

【符号の説明】[Explanation of symbols]

15 光センサ ３ 前照灯 21 前照灯 16 受光窓 19 カバ− 15 Optical sensor 3 Headlight 21 Headlight 16 Light receiving window 19 Cover

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 光センサにより周囲の明るさを検知して
暗くなると自動的に点灯し、明るくなると自動的に消灯
するようにした自転車用照明装置において、前記光セン
サへの光の取り込みを任意に遮ることのできるカバーを
設けてなる自転車用照明装置。1. A lighting device for a bicycle in which the light sensor detects ambient brightness and turns on automatically when it becomes dark, and turns off automatically when it becomes bright. Bicycle lighting device with a cover that can be shielded. 【請求項２】 前記光センサに光を導く受光窓を前照灯
のヘッドケースに設け、前記受光窓をヘッドケースの外
側より前記カバーで開閉自在に覆うようにした請求項１
記載の自転車用照明装置。2. A light receiving window for guiding light to the optical sensor is provided in a head case of a headlight, and the light receiving window is openably and closably covered by the cover from outside the head case.
The lighting device for a bicycle according to the above.