JP2003059319A - Light emitting device lighting device - Google Patents
Light emitting device lighting deviceInfo
- Publication number
- JP2003059319A JP2003059319A JP2001247846A JP2001247846A JP2003059319A JP 2003059319 A JP2003059319 A JP 2003059319A JP 2001247846 A JP2001247846 A JP 2001247846A JP 2001247846 A JP2001247846 A JP 2001247846A JP 2003059319 A JP2003059319 A JP 2003059319A
- Authority
- JP
- Japan
- Prior art keywords
- light
- piezoelectric element
- light emitting
- lighting device
- charger
- 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.)
- Withdrawn
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、圧電素子を用いた
発電装置に係り、周期的に発生させた電気エネルギーを
逐次充電し、設定した一定回数分の充電した電気エネル
ギーを一挙に放出する事が可能な発電発光装置に関する
発明である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generator using a piezoelectric element, which sequentially charges periodically generated electric energy and discharges the charged electric energy a set number of times at a stroke. The invention relates to a power-generating light-emitting device capable of
【０００２】[0002]
【従来の技術】従来から用いられている発光装置は電池
や交流直流電源からの電力供給が必要である。特に前者
では電池の残存容量が低下すると光量が下がり、最終的
には発光しなくなるという問題があった。この問題を解
決する１手段として、圧電素子による発電が提案されて
いる。2. Description of the Related Art Conventionally used light emitting devices require power supply from a battery or an AC / DC power supply. In the former case, in particular, when the remaining capacity of the battery decreases, the amount of light decreases, and finally there is a problem that light emission stops. As one means for solving this problem, power generation by a piezoelectric element has been proposed.
【０００３】従来この種の圧電素子による発光をする場
合には通常、圧電素子に金属球、セラミック球などの衝
撃体を衝突させたり、圧電素子の一端を固定してこの反
対の端を押圧し変形させたりして、圧電素子の歪みによ
って発電する。このとき発電した電力を発光体の発光に
利用したり、２次電池に充電して取り出し利用したりさ
れている。特開平６−２０９８０７にはこの発電装置を
靴底に取り付けて、歩いたり走ったりする動きに合わ
せ、圧電素子が変形し電気を発生させ発光体を発光させ
る発明がなされている。また同種の発明として特開平１
１−２５３０７１にはフィッシング用ルアーに発光ダイ
オードを内蔵し、ルアーの往復運動によって組み込まれ
た衝撃体で圧電素子を打撃する事による起電力を利用し
発光ダイオードを発光させるルアーが開示されている。Conventionally, when light is emitted from a piezoelectric element of this type, it is usual that an impact body such as a metal ball or a ceramic ball collides with the piezoelectric element, or one end of the piezoelectric element is fixed and the opposite end is pressed. Electric power is generated by the deformation of the piezoelectric element. The electric power generated at this time is used for the light emission of the light-emitting body, or the secondary battery is charged and taken out for use. Japanese Unexamined Patent Publication No. 6-209807 discloses an invention in which this power generator is attached to the sole of a shoe, and the piezoelectric element is deformed to generate electricity in response to movement such as walking or running to cause a light emitting body to emit light. Further, as an invention of the same kind, JP-A-1
No. 1-253071 discloses a lure in which a light emitting diode is built in a fishing lure and the light emitting diode is caused to emit light by using electromotive force generated by striking a piezoelectric element with an impact body incorporated by the reciprocating motion of the lure.
【０００４】[0004]
【発明の解決しようとする課題】また、圧電素子を用い
た発電システムを自転車に応用した例として特開２００
０−２８７４６４には転動室に配置された圧電素子に、
同転動室内を移動する衝撃物を衝突させ発電し、表示灯
を発光させる特許が開示されているが、自転車走行時の
振動は不規則で振幅も一定では無いため、圧電素子によ
る発電も周期、大きさとも不安定となり、表示灯の発光
も同様に不安定となるため、夜道でその存在を他人に知
らせる目的に対しては、その性能が不充分であった。In addition, as an example in which a power generation system using a piezoelectric element is applied to a bicycle, Japanese Patent Application Laid-Open No.
0-287464 has a piezoelectric element arranged in the rolling chamber,
A patent has been disclosed that impacts an impacting object moving in the rolling chamber to generate electric power and emits an indicator light.However, since the vibration when riding a bicycle is irregular and the amplitude is not constant, the power generation by the piezoelectric element is also cycled. Since the size becomes unstable, and the light emission of the indicator light becomes unstable as well, its performance was insufficient for the purpose of notifying others of its existence at night.
【０００５】前記発明により圧電素子を用いた発電シス
テムでは、いずれも１回の衝撃やたわみから発電する方
法に限定されており発電される電気エネルギーが小さ
く、発光力が小さいという問題があった。The power generation system using the piezoelectric element according to the invention is limited to the method of generating power from a single impact or deflection, and there is a problem that the generated electric energy is small and the luminous power is small.
【０００６】断続的に発電する為には風車、水車、車軸
等の回転運動から圧電素子へ衝撃を取り出し発電可能と
なれば利用分野が広く有用である。同種の発明として特
願昭５４−５６８７２号に歯車に接触して振動する接触
子の振動を圧電素子に伝えて発電する発明がなされてい
るが、接触子の弾きを利用しているため圧電素子に伝え
る衝撃が小さく発電効率が悪いという問題があった。In order to generate electric power intermittently, if the impact can be taken out from the rotary motion of a wind turbine, a water turbine, an axle or the like to the piezoelectric element, the field of application will be wide and useful. As a similar invention, Japanese Patent Application No. 54-56872 discloses an invention in which vibration of a contact that vibrates in contact with a gear is transmitted to a piezoelectric element to generate electric power. However, since the repulsion of the contact is used, the piezoelectric element is used. There was a problem that the power transmission efficiency was poor due to the small impact to be transmitted to.
【０００７】これらの欠点を補うため、一定量の電気エ
ネルギーをコンデンサに充電した後、発光させる発明と
して２０４７０３３号公報には、充電電圧が一定量を超
えた場合、この充電電気エネルギーを利用してスイッチ
ング回路を駆動させ充電電気エネルギーで一気に発光さ
せるという特許が開示されているが、スイッチング素子
等の回路が必要となり高価になるという欠点があった。In order to compensate for these drawbacks, as an invention in which a capacitor is charged with a certain amount of electric energy and then emits light, Japanese Patent No. 2047033 discloses that when the charging voltage exceeds a certain amount, this charging electric energy is used. Although a patent has been disclosed in which a switching circuit is driven and light is emitted all at once by charging electric energy, there is a drawback that a circuit such as a switching element is required and the cost becomes high.
【０００８】[0008]
【課題を解決するための手段】本発明は、このような課
題を解決するため、圧電素子を弾くまたは叩くなどによ
って圧電素子に応力発生機能を備えた回転系で圧電素子
に歪みを与えて発電し、コンデンサ等に一定値以上の電
気エネルギーを充電し、回転系内に設けた電気接点が一
定周期毎に閉じるたびにこの電気エネルギーを発光装置
に供給する事で強い発光力で発光させる点灯装置を提供
する。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention generates electric power by straining a piezoelectric element in a rotating system having a stress generating function in the piezoelectric element by hitting or striking the piezoelectric element. A lighting device that charges a capacitor with electric energy above a certain value and supplies this electric energy to the light emitting device each time the electrical contact provided in the rotating system closes at regular intervals to emit light with a strong luminous power. I will provide a.
【０００９】[0009]
【作用】本発明は回転系から得られる機械的作用により
圧電素子で発電を行い、この電気エネルギーを充電器に
一定量蓄積する発電−電気エネルギー蓄積系統を具備
し、回転系に連動した電気接点が、充電器と発光体をつ
なぐ回路を一定周期で開閉するように構成し、回路開放
中に蓄えられた電気エネルギーを周期的に電気接点を閉
じることで発光体に供給する事により発光させる。The present invention is equipped with a power generation-electric energy storage system for generating electric power by a piezoelectric element by a mechanical action obtained from a rotary system and storing a fixed amount of this electric energy in a charger, and an electrical contact linked to the rotary system. However, the circuit connecting the charger and the light emitter is configured to open and close at a constant cycle, and the electric energy stored during the circuit opening is periodically supplied to the light emitter to cause the light emitter to emit light.
【００１０】あらかじめ設定しておいた周期的な応力の
発生回数毎に、閉じる電気接点を設けておき、この電気
接点が閉じるとコンデンサ等に蓄積された電気エネルギ
ーが電流として一挙に発光体に流れ込み発光する。さら
に、回転系が回転すると電気接点が再びオープンとなり
発光体に電流が流れなくなり発光体は消灯する。電気接
点がオープンになった時点から再び充電状態になり圧電
素子を弾くまたは叩くなどによって応力を発生させるこ
とによって発生する電気エネルギーがコンデンサへ充電
される。この動作を繰り返すことで点滅を行う発光装置
を提供することができる。An electric contact to be closed is provided every preset number of times of occurrence of cyclic stress, and when the electric contact is closed, the electric energy accumulated in the capacitor or the like flows into the luminous body as a current all at once. It emits light. Further, when the rotating system rotates, the electrical contacts are opened again, and no current flows through the light emitter, and the light emitter is turned off. When the electrical contact is opened, the capacitor is charged with the electric energy generated by generating a stress by hitting or striking the piezoelectric element again after charging the capacitor again. By repeating this operation, a light-emitting device that blinks can be provided.
【００１１】[0011]
【実施例】以下本発明の実施例について図面に基づいて
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１は本発明の請求項１について発明の一
実施例を示すブロック図である。１は回転軸上に取り付
けられた歯車状カム。２は圧電素子を２枚貼り合わせて
構成した圧電バイモルフ。３は発電した電気を整流する
整流部。４は発電した電気エネルギーを充電するコンデ
ンサ。５は発光ダイオードである。FIG. 1 is a block diagram showing an embodiment of the invention according to claim 1 of the present invention. Reference numeral 1 is a gear-shaped cam mounted on the rotary shaft. Reference numeral 2 is a piezoelectric bimorph formed by bonding two piezoelectric elements together. 3 is a rectifier that rectifies the electricity generated. 4 is a capacitor that charges the generated electric energy. 5 is a light emitting diode.
【００１３】具体的には、２の圧電バイモルフは長さ４
５ｍｍ、幅１２ｍｍ、厚さ０．２５ｍｍの圧電セラミッ
クス素子を２枚貼り合わせた構造にしている。これを、
片持ち支持で固定した。この圧電バイモルフの自由端側
を弾く位置に８カ所のカムを設けた１の歯車状のカムを
配置する。今回の実施例では歯車状カムの１つのカムが
弾く度に圧電バイモルフの先端が２ｍｍ変位するように
配置した。３の整流部はスイッチングダイオードを用い
て全波整流回路を構成した。４のコンデンサは４．７μ
Ｆを用いた。圧電素子としては用いた片持ち支持のバイ
モルフのみならず、両端支持型の圧電バイモルフ、単板
の圧電素子あるいは積層型の圧電素子等の機械的歪みに
伴って電気エネルギーを発生するものであればいずれで
も適用可能である。Specifically, the piezoelectric bimorph 2 has a length of 4
It has a structure in which two piezoelectric ceramic elements having a size of 5 mm, a width of 12 mm and a thickness of 0.25 mm are bonded together. this,
Fixed with cantilever support. One gear-shaped cam provided with eight cams is arranged at a position where the free end side of this piezoelectric bimorph is flipped. In this embodiment, the piezoelectric bimorph is arranged so that the tip of the piezoelectric bimorph is displaced by 2 mm each time one cam of the gear-shaped cam is repelled. The rectification unit of No. 3 constituted a full-wave rectification circuit using switching diodes. The condenser of 4 is 4.7μ
F was used. Not only the cantilever-supported bimorph used as the piezoelectric element, but also the both-end-supported piezoelectric bimorph, a single-plate piezoelectric element, a laminated piezoelectric element, or the like that generates electric energy with mechanical strain Either is applicable.
【００１４】充電器は通常のコンデンサのみならず、圧
電素子の性能に合わせて電気二重層コンデンサの適用も
有用である。また、発光周期の長さや発光体に要求され
る電力によっては二次電池への電気エネルギー蓄積も有
用である。For the charger, not only a normal capacitor but also an electric double layer capacitor is useful according to the performance of the piezoelectric element. Further, depending on the length of the light emission cycle and the electric power required for the light emitting body, it is also useful to store electric energy in the secondary battery.
【００１５】１の歯車状カムが回転すると１ａのカムが
２の圧電バイモルフを弾き発電を行う。この歯車状カム
内には１つのカムのみ図２に示す様な圧電素子を弾く機
能と電気接点の機能を併せ持つ電気接点を兼ねたカム１
ｂを構成する。これらのカムによって圧電バイモルフが
弾かれ発生する電流は交流のため３の全波整流回路を介
して４のコンデンサに充電される。この歯車状カムの回
転に従って圧電バイモルフが発電を行い図４に示すよう
に段階的に４のコンデンサの充電電圧が上昇していく。
本実施例では、７回分の発電でコンデンサの充電電圧は
約８Ｖであった。更に回転が進みバイモルフが電気接点
を兼ねたカム１ｂに触れるとコンデンサと発光ダイオー
ドが接続され充電された電気エネルギーが電流として一
挙に発光体に流れ込み強い発光を得ることができる。こ
の繰り返しにより本実施例の場合１回転毎に１回の発光
が行われる。When the gear-shaped cam 1 rotates, the cam 1a repels the piezoelectric bimorph 2 to generate electricity. In this gear-shaped cam, only one cam has the function of flipping a piezoelectric element as shown in FIG. 2 and the function of an electric contact.
b. The electric current generated when the piezoelectric bimorph is repelled by these cams is an alternating current, so that the capacitor of 4 is charged through the full-wave rectifier circuit of 3. The piezoelectric bimorph generates power in accordance with the rotation of the gear-shaped cam, and the charging voltage of the capacitor 4 increases stepwise as shown in FIG.
In this example, the charging voltage of the capacitor was about 8 V after seven times of power generation. When the rotation further advances and the bimorph touches the cam 1b which also serves as an electric contact, the capacitor and the light emitting diode are connected to each other, and the charged electric energy flows as a current into the light emitting body at once, and a strong light emission can be obtained. By repeating this, light emission is performed once for each rotation in the case of the present embodiment.
【００１６】回転系内に構成する電気接点は本実施例で
は歯車状カム内のカムの１つとこのカムに弾かれる圧電
バイモルフ先端部で行ったが、例えば歯車状カム側面部
に電気接点を設け圧電バイモルフ上以外に電気接点を設
けても良い。また、１／２回転毎または１／３回転毎な
どに電気接点を設ければより早い周期で発光させること
ができる。逆に回転軸が１回転する間に数回転する歯車
系などの回転数変換機構を設ければ充電器への充電電気
エネルギーを大きくすることができ更に有用である。In the present embodiment, the electrical contact formed in the rotary system is one of the cams in the gear-shaped cam and the tip of the piezoelectric bimorph repelled by this cam. For example, the electrical contact is provided on the side surface of the gear-shaped cam. An electric contact may be provided other than on the piezoelectric bimorph. Further, if an electric contact is provided every ½ rotation or every ⅓ rotation, light can be emitted in a faster cycle. On the contrary, if a rotation speed conversion mechanism such as a gear system that makes several rotations while the rotation shaft makes one rotation is provided, the charging electric energy to the charger can be increased, which is more useful.
【００１７】４のコンデンサの静電容量に関しては、静
電容量が大きくなるほど一定の電圧に達するまでの充電
に時間を要する為、発光から次回の発光での間に発光ダ
イオードを発光させるために充分な電圧が得られる適度
の静電容量を圧電素子の発電性能に合わせて設定するこ
とが必要である。As for the capacitance of the capacitor of 4, the charging time required to reach a constant voltage increases as the capacitance increases, so that it is sufficient to cause the light emitting diode to emit light from one light emission to the next light emission. It is necessary to set an appropriate capacitance that can obtain a sufficient voltage in accordance with the power generation performance of the piezoelectric element.
【００１８】[0018]
【発明の効果】以上述べた如く本発明によれば、回転運
動から効率的に電気エネルギーを取り出し充電し、回転
スピードに合わせた周期で高発光を行う発電発光装置を
提供することが可能になる。As described above, according to the present invention, it is possible to provide a power-generating light-emitting device that efficiently takes out electric energy from rotary motion to charge it and emits high light at a cycle according to the rotation speed. .
【図１】本発明の実施例を示すブロック図FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】本発明の実施例の電気接点部詳細を示す斜視図FIG. 2 is a perspective view showing details of an electrical contact portion according to an embodiment of the present invention.
【図３】本発明の実施例を示す回路例FIG. 3 is a circuit example showing an embodiment of the present invention.
【図４】本発明実施例での充電電圧の推移。FIG. 4 shows the transition of charging voltage in the example of the present invention.
１ 歯車状カム １ａ カム １ｂ 電気接点を兼ねたカム ２ 圧電バイモルフ ３ 整流部 ４ コンデンサ ５ 発光ダイオード 1 Gear-shaped cam 1a cam 1b Cam that doubles as an electrical contact 2 Piezoelectric bimorph 3 Rectifier 4 capacitors 5 light emitting diode
Claims (5)
電素子で発電を行い、この電気エネルギーを充電器に一
定量蓄積する機能を具備し、該回転系に連動した電気接
点が、該充電器と発光体をつなぐ回路を一定周期で開閉
するように構成し、該電気接点開放中に蓄えられた電気
エネルギーを該電気接点が閉じたとき発光体に供給する
事により周期的に発光させることを特徴とする発光体点
灯装置。1. A charger having a function of generating electric power by a piezoelectric element by a mechanical action obtained from a rotating system and accumulating a certain amount of this electric energy in a charger, and an electrical contact linked to the rotating system being the charger. A circuit for connecting a light emitting body and a light emitting body is configured to open and close at a constant cycle, and electric energy stored during opening of the electrical contact is supplied to the light emitting body when the electrical contact is closed so that the light emitting body periodically emits light. Characterized light emitter lighting device.
て、カム機構により圧電素子をたたく、または弾く構成
としたことを特徴とする請求項１の発光体点灯装置。2. The light-emitting body lighting device according to claim 1, wherein the piezoelectric element is tapped or flipped by a cam mechanism as a means for obtaining a mechanical action from the rotary system.
で開閉する構成において、電気接点の開閉にカム機構を
用いたことを特徴とする請求項１の発光体点灯装置。3. The luminous body lighting device according to claim 1, wherein a cam mechanism is used to open and close the electrical contacts in a configuration in which a circuit connecting the charger and the luminous body is opened and closed at a constant cycle.
持型の圧電バイモルフ素子を用いたことを特徴とする請
求項１の発光体点灯装置。4. The light-emitting body lighting device according to claim 1, wherein a cantilever type or a both-end supporting type piezoelectric bimorph element is used as the piezoelectric element.
で開閉する構成において、開閉の周期がギヤなどの減速
で任意に調整できることを特徴とする請求項１の発光体
点灯装置。5. The luminous body lighting device according to claim 1, wherein the circuit for connecting the charger and the luminous body is opened and closed in a constant cycle, and the opening and closing cycle can be arbitrarily adjusted by deceleration of a gear or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001247846A JP2003059319A (en) | 2001-08-17 | 2001-08-17 | Light emitting device lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001247846A JP2003059319A (en) | 2001-08-17 | 2001-08-17 | Light emitting device lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003059319A true JP2003059319A (en) | 2003-02-28 |
Family
ID=19077097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001247846A Withdrawn JP2003059319A (en) | 2001-08-17 | 2001-08-17 | Light emitting device lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003059319A (en) |
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|---|---|---|---|---|
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| CN102635826A (en) * | 2012-04-24 | 2012-08-15 | 力帆实业(集团)股份有限公司 | Generator pre-before lighting system |
| CN106247273A (en) * | 2016-10-21 | 2016-12-21 | 河海大学 | The corridor emergency lighting facility that a kind of pressure intelligent is powered |
| JPWO2016158730A1 (en) * | 2015-03-27 | 2017-12-07 | 株式会社村田製作所 | Piezoelectric generator and piezoelectric generator |
| CN112590661A (en) * | 2020-12-14 | 2021-04-02 | 邱涛涛 | Automobile rear-end collision accident prevention device |
| CN113619419A (en) * | 2021-07-28 | 2021-11-09 | 苏州云刚智能科技有限公司 | Charging pile wire management device and method |
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2001
- 2001-08-17 JP JP2001247846A patent/JP2003059319A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120038250A1 (en) * | 2010-08-13 | 2012-02-16 | Yung Ting | Wind energy generator using piezoelectric material and auxiliary mechanism thereof |
| US8476783B2 (en) * | 2010-08-13 | 2013-07-02 | Chung-Yuan Christian University | Wind energy generator using piezoelectric material and auxiliary mechanism thereof |
| CN102635826A (en) * | 2012-04-24 | 2012-08-15 | 力帆实业(集团)股份有限公司 | Generator pre-before lighting system |
| JPWO2016158730A1 (en) * | 2015-03-27 | 2017-12-07 | 株式会社村田製作所 | Piezoelectric generator and piezoelectric generator |
| CN106247273A (en) * | 2016-10-21 | 2016-12-21 | 河海大学 | The corridor emergency lighting facility that a kind of pressure intelligent is powered |
| CN106247273B (en) * | 2016-10-21 | 2019-05-28 | 河海大学 | A kind of corridor emergency lighting facility of pressure intelligent power supply |
| CN112590661A (en) * | 2020-12-14 | 2021-04-02 | 邱涛涛 | Automobile rear-end collision accident prevention device |
| CN113619419A (en) * | 2021-07-28 | 2021-11-09 | 苏州云刚智能科技有限公司 | Charging pile wire management device and method |
| CN113619419B (en) * | 2021-07-28 | 2023-09-12 | 湖南中普湘能新能源科技有限公司 | Charging pile wire management device and method |
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