JP4577740B2 - Piezoelectric light emitting device - Google Patents
Piezoelectric light emitting device Download PDFInfo
- Publication number
- JP4577740B2 JP4577740B2 JP2000249089A JP2000249089A JP4577740B2 JP 4577740 B2 JP4577740 B2 JP 4577740B2 JP 2000249089 A JP2000249089 A JP 2000249089A JP 2000249089 A JP2000249089 A JP 2000249089A JP 4577740 B2 JP4577740 B2 JP 4577740B2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- light
- light emitting
- emitting device
- hammer
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Led Devices (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、発光体を発光させ、視覚に認知させる発光装置において、特に、圧電素子の応力を加えた時に発生する起電力を利用して発光ダイオードや照明装置を発光させる発光装置に関するものである。
【０００２】
【従来の技術】
従来、この種の圧電素子を発光ダイオード等の発光に利用した発光装置は図１に示すような両面に電極６が形成された圧電セラミックス２に発光ダイオード５がリード線８にて接続され圧電セラミックス２に撓みの応力が加わることにより発生する起電力で発光ダイオード５を発光させる発明が成されている。
【０００３】
特開平１１−２５３０７１号公報には、第２図に示す様に、円筒容器９中を揺動可能な球体１０が前記、円筒容器端部に固定された圧電ユニモルフ素子１１に衝突することにより圧電素子の発生する起電力を利用して発光ダイオードを発光させる提案が開示されている。
【０００４】
ところが、ここに提示されている圧電ユニモルフ素子１１は、円筒容器９の端部に固定されているため、球体１０が圧電ユニモルフ素子１１に付与した衝撃による振動は、持続せず、すぐに停止してしまい、発光素子が発光している時間は極めて短く、圧電素子の発生する起電力が発光ダイオードを発光せしめるに不十分であるため視覚に認知しずらいと言う欠点があった。
【０００５】
【発明が解決しようとする課題】
本発明は、このような背景に鑑みなされてものであって、微小な応力でも起電力の大きい、構造が簡単で、耐久性に富む発光装置を提供しようとするものである。
【０００６】
【課題を解決するための手段】
即ち、本出願に係る発光装置は支点となる球体を揺動自在となるよう保持し、下方には重りを取り付け、上部にはハンマーを取り付け、該ハンマーが２枚の圧電セラミックス板の同じ極性面を張り合わせた圧電バイモルフを多数個環状に、中央部に配置されると共に、各圧電バイモルフの非接着面の電極は発光ダイオードのアノード及びカソードに接続されいており、前記ハンマーは、前記重りが振り子運動することにより前記バイモルフに衝突するよう構成したので、微小な応力でも起電力の大きい、構造が簡単で、耐久性に富む発光装置が得られる。
【０００７】
【発明の実施の形態】
以下に実施例を挙げ、本発明の圧電式発光装置について、図面を参照しながら説明する。
【０００８】
図３は本発明の一実施例を示す図であり、図３（ａ）に示す如く、支点球体１２を揺動自在となるよう保持具４で保持し、下方には重り３を取り付け、上部にはハンマー１を取り付け、該ハンマー１が２枚の圧電セラミックス板２の同じ極性面を張り合わせた圧電バイモルフ７を第３図（ｂ）に示す如く、多数個環状に配置した中央部に配置されると共に、各圧電バイモルフ７の非接着面の電極は発光ダイオード５のアノード及びカソードに接続されいており、前記ハンマー１は前記重り３が振り子運動することにより前記圧電バイモルフ７に衝突するよう構成してある。
【０００９】
この様な構成にすることにより、外部から振動又は衝撃を受けると、重り３が振り子運動することにより前記バイモルフ７に衝突し、圧電バイモルフ７に起電力が発生する。この起電力により、電気的に接続されている発光ダイオード５が発光する。
【００１０】
また、重り３の重量と、支点球体１２と重り３の距離を本発明が配置される場所で最も発生しやすい振動、又は衝撃の周波数となるよう設定することにより、より効率良く発光させることが可能となる。
【００１１】
図４は横軸に時間、縦軸に起電力をとり、従来の構成の発光装置を点線、本発明による発光装置を実線で示したものであるが、本発明による発光装置は従来の方式に比べ起電力が大きく、時間も長くなっている事が解る。
【００１２】
【発明の効果】
以上述べた如く本発明によれば、圧電素子の応力を受けたときに発生する起電力を利用して発光体を発光させる発光装置において、支点となる球体を揺動自在となるよう保持し、下方には重りを取り付け、上部にはハンマーを取り付け、該ハンマーが２枚の圧電セラミックス板の同じ極性面を張り合わせた圧電バイモルフを多数個環状に配置した中央部に配置されると共に、各圧電バイモルフの非接着面の電極は発光ダイオードのアノード及びカソードに接続されいており、前記ハンマーは、前記重りが振り子運動することにより前記バイモルフに衝突するよう構成したことにより、圧電素子に付与された衝撃による振動の減衰時間が長くなり、結果、起電力が大きく、発光体の発光量が視覚に認識できることのできる圧電発光装置の提供が可能となる。
【図面の簡単な説明】
【図１】従来の発光装置を示す斜視図である。
【図２】従来の発光装置を示す斜視図である。
【図３】本発明の一実施例を示す図である。
【図４】本発明の効果を説明するグラフである。
【符号の説明】
１ ハンマー
２ 圧電セラミックス
３ 重り
４ 保持具
５ 発光ダイオード
６ 電極
７ 圧電バイモルフ
８ リード線
９ 容器
１０ 球体
１１ 圧電ユニモルフ
１２ 支点球体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a light-emitting device that emits light from a light emitter and visually recognizes the light-emitting device, and particularly relates to a light-emitting device that emits light from a light-emitting diode or a lighting device by using an electromotive force generated when a stress of a piezoelectric element is applied. .
[0002]
[Prior art]
Conventionally, a light emitting device using this type of piezoelectric element for light emission of a light emitting diode or the like has a
[0003]
In Japanese Patent Laid-Open No. 11-253071, as shown in FIG. 2, a spherical body 10 capable of swinging in a cylindrical container 9 collides with a piezoelectric unimorph element 11 fixed to the end of the cylindrical container, thereby causing piezoelectricity. A proposal for emitting light from a light emitting diode using an electromotive force generated by the element is disclosed.
[0004]
However, since the piezoelectric unimorph element 11 presented here is fixed to the end of the cylindrical container 9, the vibration due to the impact applied by the sphere 10 to the piezoelectric unimorph element 11 does not continue and stops immediately. Therefore, the time during which the light emitting element emits light is extremely short, and the electromotive force generated by the piezoelectric element is insufficient to cause the light emitting diode to emit light.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of such a background, and an object of the present invention is to provide a light emitting device that has a large electromotive force even with a minute stress, has a simple structure, and has high durability.
[0006]
[Means for Solving the Problems]
That is, the light emitting device according to the present application holds the sphere serving as a fulcrum so as to be swingable, a weight is attached below, a hammer is attached to the top, and the hammer has the same polar surface of the two piezoelectric ceramic plates. A large number of piezoelectric bimorphs bonded together are arranged in the center of the ring, and the electrodes on the non-adhesive surface of each piezoelectric bimorph are connected to the anode and cathode of the light-emitting diode. By doing so, it is configured to collide with the bimorph, so that a light emitting device having a large electromotive force even with a small stress, a simple structure, and high durability can be obtained.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Examples Hereinafter, the piezoelectric light-emitting device of the present invention will be described with reference to the drawings.
[0008]
FIG. 3 is a view showing an embodiment of the present invention. As shown in FIG. 3 (a), the fulcrum sphere 12 is held by a holder 4 so as to be swingable, a weight 3 is attached below, and an upper part is attached. A hammer 1 is attached, and the hammer 1 is arranged at the center portion where a large number of
[0009]
With this configuration, when a vibration or impact is applied from the outside, the weight 3 collides with the
[0010]
Further, by setting the weight of the weight 3 and the distance between the fulcrum sphere 12 and the weight 3 to be the vibration or shock frequency that is most likely to occur at the place where the present invention is disposed, the light can be emitted more efficiently. It becomes possible.
[0011]
In FIG. 4, the horizontal axis represents time, the vertical axis represents electromotive force, the light emitting device having the conventional configuration is indicated by a dotted line, and the light emitting device according to the present invention is indicated by a solid line. It can be seen that the electromotive force is larger and the time is longer.
[0012]
【The invention's effect】
As described above, according to the present invention, in the light emitting device that emits the light emitter using the electromotive force generated when the piezoelectric element is subjected to stress, the sphere serving as a fulcrum is held so as to be swingable. A weight is attached to the lower part, a hammer is attached to the upper part, and the hammer is arranged at the center part where a large number of piezoelectric bimorphs having the same polar face of two piezoelectric ceramic plates bonded together are arranged in an annular shape. The electrode on the non-adhesive surface is connected to the anode and cathode of the light emitting diode, and the hammer is configured so that the weight collides with the bimorph by pendulum movement, so that the impact is applied to the piezoelectric element. Providing a piezoelectric light-emitting device that has a long decay time for vibration, results in a large electromotive force, and can visually recognize the amount of light emitted from the light emitter. The ability.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a conventional light emitting device.
FIG. 2 is a perspective view showing a conventional light emitting device.
FIG. 3 is a diagram showing an embodiment of the present invention.
FIG. 4 is a graph illustrating the effect of the present invention.
[Explanation of symbols]
1 Hammer 2 Piezoelectric Ceramics 3 Weight 4
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000249089A JP4577740B2 (en) | 2000-08-18 | 2000-08-18 | Piezoelectric light emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000249089A JP4577740B2 (en) | 2000-08-18 | 2000-08-18 | Piezoelectric light emitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002064232A JP2002064232A (en) | 2002-02-28 |
| JP4577740B2 true JP4577740B2 (en) | 2010-11-10 |
Family
ID=18738875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000249089A Expired - Lifetime JP4577740B2 (en) | 2000-08-18 | 2000-08-18 | Piezoelectric light emitting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4577740B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101263288B1 (en) | 2013-01-03 | 2013-05-10 | (주)일루엔 | Led view lighting device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002164588A (en) * | 2000-11-28 | 2002-06-07 | Usc Corp | Power generating device |
| JP4508900B2 (en) * | 2005-02-16 | 2010-07-21 | 株式会社オーディオテクニカ | Microphone |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5191686A (en) * | 1975-02-08 | 1976-08-11 | ||
| JPS6287125A (en) * | 1985-10-12 | 1987-04-21 | イユルゲン・モルゲンスタ−ン | Apparatus for monitoring respiration and heart activity |
| JPH116732A (en) * | 1997-06-14 | 1999-01-12 | Makoto Haneda | Inclined vibration sensor, inclined vibration sensor and portable alarm device |
| JPH11253071A (en) * | 1998-03-13 | 1999-09-21 | Yoshihiro Ogura | Power generating device and lure using the same |
| JP2001145375A (en) * | 1999-11-12 | 2001-05-25 | Mikio Umeda | Piezoelectric generator |
-
2000
- 2000-08-18 JP JP2000249089A patent/JP4577740B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5191686A (en) * | 1975-02-08 | 1976-08-11 | ||
| JPS6287125A (en) * | 1985-10-12 | 1987-04-21 | イユルゲン・モルゲンスタ−ン | Apparatus for monitoring respiration and heart activity |
| JPH116732A (en) * | 1997-06-14 | 1999-01-12 | Makoto Haneda | Inclined vibration sensor, inclined vibration sensor and portable alarm device |
| JPH11253071A (en) * | 1998-03-13 | 1999-09-21 | Yoshihiro Ogura | Power generating device and lure using the same |
| JP2001145375A (en) * | 1999-11-12 | 2001-05-25 | Mikio Umeda | Piezoelectric generator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101263288B1 (en) | 2013-01-03 | 2013-05-10 | (주)일루엔 | Led view lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002064232A (en) | 2002-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8330331B2 (en) | Piezoelectric power generator | |
| JP2007049658A (en) | Bone conduction type receiver using piezoelectric vibrator | |
| JP2001180553A (en) | Safety light for vehicle | |
| WO2004077652A1 (en) | Piezoelectric power generator | |
| JP4577740B2 (en) | Piezoelectric light emitting device | |
| EA200300053A1 (en) | REVERSIBLE MECHANO-ELECTRIC CONVERTER | |
| JP4865385B2 (en) | Power generation device, light emitting device, and flashlight using the same | |
| JP2001204507A (en) | Luminescent shoe | |
| JP2006216898A (en) | Piezoelectric generator | |
| CN109889095A (en) | A kind of action of traffic loading lower cantalever formula piezoelectric transducer device | |
| KR102288498B1 (en) | Self powered delieator comprising lighting part | |
| JP2003061369A (en) | Piezoelectric power-generating unit | |
| JP2002064231A (en) | Piezoelectric light-emitting device | |
| JP2001352099A (en) | Light-emitting device | |
| JP2006254586A (en) | Piezoelectric power plant | |
| JPS5919175A (en) | Dot printing head | |
| JP2002062309A (en) | Piezoelectric luminous device | |
| JPH1119591A (en) | Vibrator for reporting | |
| JP4767174B2 (en) | Electromechanical motor and method for assembling the same | |
| JP2001204530A (en) | Personal effects such as bag | |
| JP2001210101A (en) | Manually workable signal light | |
| JP2001224281A (en) | Lure | |
| JP2003061368A (en) | Piezoelectric power-generating unit | |
| JP2001145375A (en) | Piezoelectric generator | |
| JP2002064230A (en) | Piezoelectric light-emitting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20061218 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070202 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100818 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20100819 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100819 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130903 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 4577740 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130903 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140903 Year of fee payment: 4 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |