JP5495434B2 - Medical instrument light source - Google Patents

Medical instrument light source Download PDF

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JP5495434B2
JP5495434B2 JP2010148876A JP2010148876A JP5495434B2 JP 5495434 B2 JP5495434 B2 JP 5495434B2 JP 2010148876 A JP2010148876 A JP 2010148876A JP 2010148876 A JP2010148876 A JP 2010148876A JP 5495434 B2 JP5495434 B2 JP 5495434B2
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led
housing
light source
cartridge
control circuit
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JP2012010849A (en
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武弘 落合
健嗣 長谷川
通三 山中
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Yoshida Dental Mfg Co Ltd
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Yoshida Dental Mfg Co Ltd
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Description

本発明は医療用インスツルメントの光源、特に、歯科用ハンドピースに交換自在に内蔵される照明用光源として使用されるＬＥＤカートリッジに関するものである。   The present invention relates to a light source for medical instruments, and more particularly to an LED cartridge used as an illumination light source that is replaceably incorporated in a dental handpiece.

従来、歯科用インスツルメント照明用光源本体としては、白熱電球本体、およびＬＥＤ本体がある（特開２００８−３０７２４８号公報参照）。
白熱電球本体を有する光源インスツルメントのカートリッジＩＢＣは、図２に示すように、フィラメント型の白熱電球本体１と、この白熱電球本体１の基部２を収納するハウジング３と、このハウジングの底部５を貫通しフィラメント端子４に接続される２本の接点ピン７とから構成されている。
このインスツルメント内に用いられている照明用光源の白熱電球本体をＬＥＤ本体に交換する場合には、ユニット（テーブル）側の回路基板に制限抵抗を付ける作業が発生し、光源交換の作業に手間がかかる欠点があった。 Conventionally, as a light source body for dental instrument illumination, there are an incandescent light bulb body and an LED body (see Japanese Patent Application Laid-Open No. 2008-307248).
As shown in FIG. 2, a cartridge IBC of a light source instrument having an incandescent light bulb body includes a filament-type incandescent light bulb body 1, a housing 3 that houses a base 2 of the incandescent light bulb body 1, and a bottom portion 5 of the housing. And two contact pins 7 connected to the filament terminal 4.
When replacing the incandescent light bulb main body of the illumination light source used in this instrument with the LED main body, the work of attaching a limiting resistor to the circuit board on the unit (table) side occurs, and the light source replacement work There was a shortcoming that took time.

また、ＬＥＤ本体を有する光源インスツルメントのカートリッジＬＣは、図３に示すように、ＬＥＤ本体１１と、このＬＥＤ本体１１の基部１２を収納する絶縁防護用のハウジング１３と、このハウジング１３を最終的に密閉するハウジングの蓋部１５と、この蓋部１５を貫通しＬＥＤ本体１１の２本のＬＥＤ端子１７に接続される２本の接点ピン１９とから構成されている。このカートリッジＬＣのハウジングの蓋部１５には中央部に孔２０をあけ、この孔２０からハウジング内部に不燃性樹脂を充填した後蓋の孔を塞いでハウジング内を密閉するようにしている。   Further, as shown in FIG. 3, the light source instrument cartridge LC having an LED main body includes an LED main body 11, a housing 13 for insulation protection for housing the base portion 12 of the LED main body 11, and the housing 13 as a final product. The cover 15 of the housing that is hermetically sealed, and two contact pins 19 that pass through the cover 15 and are connected to the two LED terminals 17 of the LED main body 11. A hole 20 is formed in the central portion of the lid portion 15 of the housing of the cartridge LC, and the inside of the housing is filled with a nonflammable resin through the hole 20 and then the hole of the lid is closed to seal the inside of the housing.

斯様に、インスツルメント内に用いられている照明用光源として、上述した従来型のＬＥＤ本体が設置されている場合、ユニット（テーブル）側の回路基板には抵抗（図示せず）が設けられている。この時、従来型のＬＥＤ本体が短絡故障すると、ユニット（テーブル）側の回路基板の抵抗（図示せず）が損傷し、ユニット（テーブル）側の他の回路に悪影響を及ぼす可能性がある。
斯様に、歯科用インスツルメントのＬＥＤカートリッジＬＣは、白熱電球の高寿命化、省電力化をメリットとし、白熱電球を光源とする機器への置き換えを想定した製品であり、白熱電球と同形状にＬＥＤカートリッジを仕上げるに留まっており、置き換えまたは交換の際には素子または制御回路基板を別途に追加する作業が必要であった。
このため、焼損防止機能を具えていないか、或は、大がかりな（周囲の部品に応じての）延焼防止策を講じる必要があった。 In this way, when the above-described conventional LED body is installed as the illumination light source used in the instrument, a resistor (not shown) is provided on the circuit board on the unit (table) side. It has been. At this time, if the conventional LED main body is short-circuited, the resistance (not shown) of the circuit board on the unit (table) side may be damaged, and other circuits on the unit (table) side may be adversely affected.
In this way, LED cartridges LC for dental instruments are products that are expected to replace incandescent bulbs with equipment that uses incandescent bulbs as the light source, with the advantage of extending the life and power consumption of incandescent bulbs. Only the LED cartridge is finished in the shape, and when replacing or replacing, it is necessary to add an element or a control circuit board separately.
For this reason, it has been necessary to take measures to prevent the spread of fire (not depending on the surrounding parts), or not to have a function of preventing burnout.

特開２００８−３０７２４８号公報JP 2008-307248 A

本発明は、医療用、特に歯科用インスツルメントの歯科用インスツルメント光源において、ＬＥＤ本体と、該ＬＥＤ本体に流れる電流を制限する素子をプリント回路内に接続した制御回路基板ＥＣと、前記ＬＥＤ本体と制御回路基板ＥＣを収容するハウジングとから構成することによって、ＬＥＤカートリッジへの過電圧印加、及び長期使用によって危惧される素子または制御回路等の焼損を未然に防ぐ特徴（機能）を備えたＬＥＤカートリッジを提供することによって白熱電球を光源とする歯科用インスツルメントへの置き換えを、従来に比して容易に、且つ安価に交換し得ることを目的とするものである。 The present invention relates to a medical instrument, particularly a dental instrument light source of a dental instrument, an LED main body, and a control circuit board EC in which an element for limiting a current flowing in the LED main body is connected in a printed circuit, An LED having a feature (function) that prevents an overvoltage from being applied to the LED cartridge and burning of an element or a control circuit, which is a concern due to long-term use, by constituting the LED main body and a housing for accommodating the control circuit board EC. It is an object of the present invention to provide a cartridge that can be easily and inexpensively replaced with a dental instrument using an incandescent bulb as a light source.

本発明歯科用インスツルメント光源は、ハンドピースＨＰにホース側のハンドピースジョイント部ＨＪを螺合するとともに、当該ハンドピースジョイント部ＨＪの接続端子に、カートリッジホルダＣＨ内に嵌合したＬＥＤカートリッジＬＣの接続端子を接続して、前記ハンドピースＨＰに交換自在に、前記ＬＥＤカートリッジＬＣを内蔵することにより構成した歯科用インスツルメントの歯科用インスツルメント光源において、The dental instrument light source of the present invention is an LED cartridge LC in which a hose-side handpiece joint portion HJ is screwed into the handpiece HP and the connection terminal of the handpiece joint portion HJ is fitted in the cartridge holder CH. In a dental instrument light source of a dental instrument constructed by incorporating the LED cartridge LC so as to be exchangeable with the handpiece HP,
ＬＥＤ本体と、該ＬＥＤ本体に流れる電流を制限する素子をプリント回路内に接続した制御回路基板ＥＣと、前記ＬＥＤ本体と制御回路基板ＥＣを収容するハウジングとから構成したことを特徴とする。  It is characterized by comprising an LED main body, a control circuit board EC in which an element for limiting a current flowing through the LED main body is connected in a printed circuit, and a housing for housing the LED main body and the control circuit board EC.

本発明歯科用インスツルメント光源は、ＬＥＤ本体と、該ＬＥＤ本体に流れる電流を制限する素子をプリント回路内に接続した制御回路基板ＥＣと、前記ＬＥＤ本体と制御回路基板ＥＣを収容するハウジングとから構成されているため、ＬＥＤカートリッジの交換に併せて制御回路等を新たに組込む必要がなく、容易に置き換えることができ、交換時の作業時間を短縮することができる。
また、ＬＥＤカートリッジへの過電圧印加等、長期使用に対する安全性を考えたとき、ＬＥＤ本体が破損に至り短絡状態になると共に制御回路等をＬＥＤカートリッジに内蔵することによって、カートリッジ単体にて、制御回路等の損傷を食い止めることができ、更なる延焼の発生を未然に防ぐことができる。
更に、本発明によれば、術者（歯科医）がＬＥＤ光源を、必要に応じ、選択して交換可能とすることにある。斯様に構成して使用することにより、例えば、う蝕部分に反応する波長の光を発光するＬＥＤに交換することによって、う蝕等の検知・観察を容易に行うことができる。 The dental instrument light source of the present invention includes an LED main body, a control circuit board EC in which an element for limiting a current flowing through the LED main body is connected in a printed circuit, and a housing for housing the LED main body and the control circuit board EC. because it is composed, it is not necessary to newly incorporate control circuit and the like in accordance with the replacement of LED cartridge, can be easily replaced, it is possible to shorten the working time for replacement.
Also, when considering safety for long-term use, such as overvoltage application to the LED cartridge, the LED main body will be damaged and short-circuited, and the control circuit etc. will be built in the LED cartridge, so that the control circuit alone It is possible to stop the damage such as the occurrence of further spread of fire.
Furthermore, according to the present invention, an operator (dentist) can select and replace an LED light source as necessary. By configuring and using in this way, for example, by exchanging an LED that emits light having a wavelength that reacts with a carious portion, it is possible to easily detect and observe caries and the like.

（ａ）は本発明歯科用インスツルメント光源を歯科用ハンドピースに組み込んだ状態を示す一部断面正面図である。（ｂ）は本発明歯科用インスツルメント光源を歯科用ハンドピースに組み込む状態を示す組立図である。(A) is a partial cross section front view which shows the state which incorporated the dental instrument light source of this invention in the dental handpiece. (B) is an assembly drawing which shows the state which incorporates the dental instrument light source of this invention in a dental handpiece. （ａ）は従来の白熱電球型のカートリッジを示す平面図である。（ｂ）は同じくそのＡ−Ａ線上の断面図である。(A) is a top view which shows the conventional incandescent bulb type cartridge. (B) is also a sectional view on the AA line. （ａ）は従来の砲弾型ＬＥＤカートリッジを示す平面図である。（ｂ）は同じくそのＡ−Ａ線上の断面図である。(A) is a top view which shows the conventional bullet-type LED cartridge. (B) is also a sectional view on the AA line. （ａ）は本発明砲弾型ＬＥＤカートリッジを示す平面図である。（ｂ）は同じくそのＡ−Ａ線上の断面図である。（ｃ）は本発明による制御回路基板を示す斜視図である。(A) is a top view which shows this invention bullet-type LED cartridge. (B) is also a sectional view on the AA line. (C) is a perspective view showing a control circuit board according to the present invention. （ａ）は本発明チップ型ＬＥＤカートリッジを示す平面図である。（ｂ）は同じくそのＡ−Ａ線上の断面図である。（ｃ）は本発明による制御回路基板を示す斜視図である。(A) is a top view which shows this invention type | mold chip-type LED cartridge. (B) is also a sectional view on the AA line. (C) is a perspective view showing a control circuit board according to the present invention.

図１ｂの全体図から明らかなように、本発明ＬＥＤカートリッジＬＣはカートリッジホルダＣＨ内に嵌合した後、ホース側のハンドピースジョイント部ＨＪの接続端子（図示せず）に接続し、その後、ジョイント部ＨＪをハンドピースＨＰに螺合する。斯様に螺合した状態を図１ａの一部切欠断面図に示す。   As is apparent from the overall view of FIG. 1b, the LED cartridge LC of the present invention is fitted in the cartridge holder CH, and then connected to a connection terminal (not shown) of the handpiece joint portion HJ on the hose side. The part HJ is screwed into the handpiece HP. Such a screwed state is shown in the partially cutaway sectional view of FIG. 1a.

本願発明の歯科用インスツルメント光源としてのＬＥＤカートリッジＬＣは、ＬＥＤ本体２１と、該ＬＥＤ本体２１に流れる電流を制限する素子をプリント回路内に接続した制御回路基板ＥＣと、歯科用インスツルメントのハンドピースＨＰに接続するための専用素子，例えば、カートリッジホルダＣＨと、前記ＬＥＤ本体２１および前記電流制限制御回路基板ＥＣの絶縁防護用ハウジング２３、または、絶縁防護兼不燃性樹脂によるハウジング２３とから構成する。
或は又、制御回路基板ＥＣにはＬＥＤ本体２１の発光光量を制限するための抵抗素子３１や、抵抗素子３１が入力電圧変動に対し電流を規定値に調整するためのＩＣ等が実装される。 An LED cartridge LC as a dental instrument light source of the present invention includes an LED main body 21, a control circuit board EC in which elements for limiting the current flowing through the LED main body 21 are connected in a printed circuit, and a dental instrument. A dedicated element for connecting to the handpiece HP, such as a cartridge holder CH, a housing 23 for insulation protection of the LED main body 21 and the current limiting control circuit board EC, or a housing 23 made of insulation protection and non-flammable resin. Consists of.
Alternatively, the control circuit board EC is mounted with a resistance element 31 for limiting the amount of light emitted from the LED main body 21 and an IC for the resistance element 31 to adjust the current to a specified value with respect to input voltage fluctuation. .

図４、図５は制御回路基板を用いたＬＥＤカートリッジの実施例である。即ち、図４ａ、図４ｂおよび図４ｃに示すように、本発明ＬＥＤカートリッジＬＣは、砲弾型ＬＥＤ本体２１を絶縁防護用ハウジング２３内に嵌装し、このＬＥＤ本体２１の基部２２をそのＬＥＤ端子２４に接続し、このＬＥＤ端子２４に制御回路基板３０をハウジング２３内で接続し、その後、絶縁防護用のハウジング蓋部２５によって密閉する。このハウジング蓋部２５にはその内部の制御回路基板３０内まで到達する2個の孔をあけ、この孔内に2本の接点ピン２９を挿通してＬＥＤ本体２１に電流を供給し得るようにする。   4 and 5 show an embodiment of an LED cartridge using a control circuit board. That is, as shown in FIGS. 4a, 4b, and 4c, the LED cartridge LC of the present invention has a shell-type LED main body 21 fitted in an insulation protection housing 23, and the base portion 22 of the LED main body 21 is connected to its LED terminal. The control circuit board 30 is connected to the LED terminal 24 in the housing 23, and then sealed with a housing lid 25 for insulation protection. The housing lid portion 25 is formed with two holes reaching the inside of the control circuit board 30 therein, and two contact pins 29 are inserted into the holes so that current can be supplied to the LED main body 21. To do.

また、ハウジング２３には、その側部の、前記ＬＥＤ本体２１および前記制御回路基板３０間に挿通孔２６をあけ、この孔からハウジング内に不燃性樹脂の充填材２７を充填し、その後、挿通孔２６を塞いで密閉する。斯様にして、本発明砲弾型ＬＥＤカートリッジＬＣを完成する。
なお、ハウジング２３は絶縁防護兼不燃性樹脂により形成されているものであってもよい。
さらに、図４ｃに示すように、制御回路基板ＥＣは、基板３０上に複数のプリント回路３３を形成し、このプリント回路３３内に、ＬＥＤ本体２１を流れる電流を制限する抵抗素子３１を接続して構成する。この抵抗素子３１は、ＩＣに置き換えることができる。また、プリント回路３３内に抵抗素子とＩＣを混在させてもよい。上述した例では、ハウジング内を、不燃性樹脂で充填した後、密閉したが、本発明はこれに限定されるものではなく、ハウジングが絶縁防護用で形成、もしくは絶縁防護兼不燃性樹脂により形成されていれば、ハウジング内に不燃性樹脂を必ずしも充填する必要はない。 Further, the housing 23 is provided with an insertion hole 26 between the LED main body 21 and the control circuit board 30 on the side thereof, and the housing 27 is filled with a non-combustible resin filler 27 and then inserted. The hole 26 is closed and sealed. In this way, the bullet-type LED cartridge LC of the present invention is completed.
The housing 23 may be formed of an insulation protection and non-flammable resin.
Further, as shown in FIG. 4 c, the control circuit board EC forms a plurality of printed circuits 33 on the board 30, and a resistance element 31 that limits the current flowing through the LED body 21 is connected to the printed circuit 33. Configure. The resistance element 31 can be replaced with an IC. Further, a resistive element and an IC may be mixed in the printed circuit 33. In the above-described example, the inside of the housing is sealed after being filled with a nonflammable resin, but the present invention is not limited to this, and the housing is formed for insulation protection or formed of insulation protection and nonflammable resin. If it is, it is not always necessary to fill the housing with non-flammable resin.

また、本発明ＬＥＤカートリッジＬＣの他の例を図５に付き説明する。
図５ａ、図５ｂおよび図５ｃに示すように、本例ＬＥＤカートリッジＬＣは、ＬＥＤ本体としてチップ型ＬＥＤを使用する。このチップ型ＬＥＤ４１を絶縁防護用ハウジング４３内に嵌装し、そのＬＥＤ端子４４に制御回路基板３０をハウジング４３内で接続し、その後、絶縁防護用のハウジング蓋部４５によって密閉する。このハウジング蓋部４５にはその内部に制御回路基板３０内まで到達する2個の孔をあけ、この孔内に2本の接点ピン４９を挿通してチップ型ＬＥＤ本体４１に電流を供給し得るようにする。 Another example of the LED cartridge LC of the present invention will be described with reference to FIG.
As shown in FIGS. 5a, 5b and 5c, the LED cartridge LC of this example uses a chip-type LED as the LED body. The chip type LED 41 is fitted in the insulation protection housing 43, the control circuit board 30 is connected to the LED terminal 44 in the housing 43, and then sealed by the insulation protection housing lid 45. The housing lid portion 45 is formed with two holes reaching the inside of the control circuit board 30, and two contact pins 49 are inserted into the holes to supply current to the chip-type LED body 41. Like that.

また、ハウジング４３には、その側部の、前記チップ型ＬＥＤ本体４１および前記制御回路基板３０間に挿通孔４６をあけ、この孔からハウジング内に不燃性樹脂の充填材４７を充填し、その後挿通孔４６を塞いで密閉する。斯様にして、本発明チップ型ＬＥＤカートリッジＬＣを完成する。
なお、ハウジング４３は絶縁防護兼不燃性樹脂により形成されているものであってもよい。
さらに、図５ｃに示すように、制御回路基板ＥＣは、基板３０上に複数のプリント回路３３を形成し、このプリント回路３３内に、チップ型ＬＥＤ本体４１を流れる電流を制限する抵抗素子３１を接続して構成する。この抵抗素子３１は、ＩＣに置き換えることができる。また、プリント回路３３内に抵抗素子とＩＣを混在させてもよい。上述した例では、ハウジング内を、不燃性樹脂で充填した後、密閉したが、本発明はこれに限定されるものではなく、ハウジングが絶縁防護用で形成、もしくは絶縁防護兼不燃性樹脂により形成されていれば、ハウジング内に不燃性樹脂を必ずしも充填する必要はない。 Further, the housing 43 is provided with an insertion hole 46 between the chip-type LED main body 41 and the control circuit board 30 on the side thereof, and a non-combustible resin filler 47 is filled into the housing from this hole. The insertion hole 46 is closed and sealed. Thus, the chip type LED cartridge LC of the present invention is completed.
The housing 43 may be formed of an insulation protection and non-flammable resin.
Furthermore, as shown in FIG. 5 c, the control circuit board EC forms a plurality of printed circuits 33 on the board 30, and a resistance element 31 that limits the current flowing through the chip-type LED body 41 is provided in the printed circuit 33. Connect and configure. The resistance element 31 can be replaced with an IC. Further, a resistive element and an IC may be mixed in the printed circuit 33. In the above-described example, the inside of the housing is sealed after being filled with a nonflammable resin, but the present invention is not limited to this, and the housing is formed for insulation protection or formed of insulation protection and nonflammable resin. If it is, it is not always necessary to fill the housing with non-flammable resin.

１ 白熱電球本体
２ 基部
３ ハウジング
４ フィラメント端子
５ ハウジング底部
７ 接点ピン
１１ ＬＥＤ本体
１２ ＬＥＤ本体の基部
１３ ハウジング
１５ ハウジング蓋部
１７ ＬＥＤ端子
１９ 接点ピン
２０ 孔
２１ ＬＥＤ本体
２２ ＬＥＤ本体の基部
２３ ハウジング
２４ ＬＥＤ端子
２５ ハウジング蓋部
２６ 挿通孔
２７ 充填材
２９ 接点ピン
３１ 抵抗素子(制限抵抗)
３３ プリント回路
４１ チップ型ＬＥＤ
４３ ハウジング
４４ ＬＥＤ端子
４５ ハウジング蓋部
４６ 挿通孔
４７ 充填材
４９ 接点ピン
ＬＣ ＬＥＤカートリッジ
ＣＨ カートリッジホルダ
ＨＪ ハンドピースとホースとのジョイント部
ＨＰ ハンドピース
ＥＣ 制御回路
ＩＢＣ 白熱電球型カートリッジ DESCRIPTION OF SYMBOLS 1 Incandescent light bulb body 2 Base 3 Housing 4 Filament terminal 5 Housing bottom 7 Contact pin 11 LED body 12 LED body base 13 Housing 15 Housing lid 17 LED terminal 19 Contact pin 20 Hole 21 LED body 22 LED body base 23 Housing 24 LED terminal 25 Housing cover part 26 Insertion hole 27 Filler 29 Contact pin 31 Resistance element (limit resistance)
33 Printed circuit 41 Chip type LED
43 Housing 44 LED Terminal 45 Housing Cover 46 Insertion Hole 47 Filling Material 49 Contact Pin LC LED Cartridge CH Cartridge Holder HJ Joint between Handpiece and Hose HP Handpiece EC Control Circuit IBC Incandescent Bulb Type Cartridge

Claims (2)

ハンドピースＨＰにホース側のハンドピースジョイント部ＨＪを螺合するとともに、当該ハンドピースジョイント部ＨＪの接続端子に、カートリッジホルダＣＨ内に嵌合したＬＥＤカートリッジＬＣの接続端子を接続して、前記ハンドピースＨＰに交換自在に、前記ＬＥＤカートリッジＬＣを内蔵することにより構成した歯科用インスツルメントの歯科用インスツルメント光源において、
ＬＥＤ本体と、該ＬＥＤ本体に流れる電流を制限する素子をプリント回路内に接続した制御回路基板ＥＣと、前記ＬＥＤ本体と制御回路基板ＥＣを収容するハウジングとから構成したことを特徴とする歯科用インスツルメント光源。 The handpiece joint HJ on the hose side is screwed to the handpiece HP, and the connection terminal of the LED cartridge LC fitted in the cartridge holder CH is connected to the connection terminal of the handpiece joint section HJ. In a dental instrument light source of a dental instrument configured by incorporating the LED cartridge LC in a replaceable manner with a piece HP,
The dental body comprising an LED body, a control circuit board EC in which an element for limiting the current flowing through the LED body is connected in a printed circuit, and a housing for housing the LED body and the control circuit board EC Instrument light source. 前記ハウジングは、絶縁防護用ハウジング、または、絶縁防護兼不燃性樹脂によるハウジングにて構成したことを特徴とする請求項１に記載の歯科用インスツルメント光源。   The dental instrument light source according to claim 1, wherein the housing is constituted by an insulation protection housing or a housing made of insulation protection and non-flammable resin.
JP2010148876A 2010-06-30 2010-06-30 Medical instrument light source Active JP5495434B2 (en)

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JP6262936B2 (en) 2012-08-31 2018-01-17 株式会社吉田製作所 Camera built-in handpiece

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4216873C2 (en) * 1992-05-21 1995-02-16 Kaltenbach & Voigt Medical or dental treatment instrument with a driven treatment tool and with a lighting device
JP3455926B2 (en) * 1994-06-07 2003-10-14 株式会社吉田製作所 Dental treatment instrument with lighting mechanism
JP2002306512A (en) * 2001-04-16 2002-10-22 Morita Mfg Co Ltd Lighting device for medical treatment, photopolymerizer for medical treatment provided with the same, instrument for medical treatment and unit for medical treatment
JP2003273404A (en) * 2002-03-14 2003-09-26 Nihon Kaiheiki Industry Co Ltd Led lamp
JP5162058B2 (en) * 2009-12-23 2013-03-13 株式会社モリタ製作所 Light emitting diode lighting parts

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