JPH05211002A - Metal halide lamp for automobile head lamp - Google Patents
Metal halide lamp for automobile head lampInfo
- Publication number
- JPH05211002A JPH05211002A JP460792A JP460792A JPH05211002A JP H05211002 A JPH05211002 A JP H05211002A JP 460792 A JP460792 A JP 460792A JP 460792 A JP460792 A JP 460792A JP H05211002 A JPH05211002 A JP H05211002A
- Authority
- JP
- Japan
- Prior art keywords
- base
- cover
- lamp
- electric wire
- electrostatic shield
- 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.)
- Granted
Links
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車前照灯用メタル
ハライドランプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal halide lamp for a vehicle headlight.
【０００２】[0002]
【従来の技術】従来から自動車前照灯用ランプとして
は、ハロゲン電球が広く使用されている。この自動車前
照灯用ハロゲン電球では、口金端部に接続端子を設けた
構造を採っている。2. Description of the Related Art Halogen bulbs have been widely used as lamps for automobile headlights. This halogen bulb for automobile headlights has a structure in which a connection terminal is provided at the end of the base.
【０００３】近年、メタルハライドランプを自動車前照
灯用ランプに利用するための開発が進められている。In recent years, developments have been undertaken for utilizing metal halide lamps in automobile headlight lamps.
【０００４】しかし、自動車前照灯用ランプとしてメタ
ルハライドランプを用いる場合には、ランプ起動時に高
電圧が印加されるため、絶縁耐圧の点で、口金端部に接
続端子を設けた構造を採用することはできない。However, when a metal halide lamp is used as a lamp for an automobile headlight, a high voltage is applied at the time of starting the lamp, and therefore a structure in which a connection terminal is provided at the end of the base is adopted in terms of withstand voltage. It is not possible.
【０００５】従来、自動車前照灯用メタルハライドラン
プにおいて、絶縁耐圧を配慮したものとして、口金内部
に金属端子とその金属端子間に隔壁とを設け、それぞれ
の金属端子に絶縁被覆電線を接続したものが知られてい
る（特開平３−１２２９４０号公報）。Conventionally, a metal halide lamp for a vehicle headlamp, in which a metal terminal and a partition wall are provided between the metal terminals and an insulating coated electric wire is connected to each metal terminal in consideration of insulation withstand voltage. Is known (JP-A-3-122940).
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、このよ
うなメタルハライドランプにおいては、ランプ起動時お
よび動程中に高周波の高電圧が印加されるために、絶縁
被覆電線等からノイズが発生してラジオ等の車載機器に
悪影響を及ぼすという問題があった。However, in such a metal halide lamp, since a high frequency high voltage is applied at the time of starting the lamp and during its travel, noise is generated from the insulation-coated wire or the like and the radio or the like is used. There was a problem that it adversely affected the in-vehicle equipment.
【０００７】本発明は、ランプ起動時および動程中に絶
縁被覆電線等から発生するノイズを減少させることがで
き、さらに使用中、ランプに加わる振動等に対してノイ
ズ防止効果が損なわれない自動車前照灯用メタルハライ
ドランプを提供するものである。The present invention can reduce the noise generated from the insulation-coated electric wire at the time of starting the lamp and during the travel, and further, the noise preventing effect is not impaired against the vibration applied to the lamp during use. A metal halide lamp for a headlight is provided.
【０００８】本発明はさらに防水構造を備え、雨水等の
浸入によって灯具の全面ガラスが曇ってしまうのを阻止
することのできる自動車前照灯用メタルハライドランプ
を提供するものである。The present invention further provides a metal halide lamp for a vehicle headlamp, which has a waterproof structure and can prevent the entire glass of the lamp from being fogged due to infiltration of rainwater or the like.
【０００９】[0009]
【課題を解決するための手段】本発明の自動車前照灯用
メタルハライドランプは、両端に一対の電極が設けられ
た発光管を一端側に支持した口金の内部に、前記電極に
それぞれ接続された導体と、前記口金の他端側から挿入
した２本の絶縁被覆電線とを設け、前記口金の内部で前
記導体と前記絶縁被覆電線とをそれぞれ接続し、前記口
金に、この口金の少なくとも前記絶縁被覆電線が位置す
る部分の外周面を覆うように導電性カバーを固着し、こ
のカバーの一端部に静電シールドを接続することによ
り、前記絶縁被覆電線を前記静電シールドで覆った構成
を有する。A metal halide lamp for an automobile headlamp according to the present invention is connected to each of the electrodes inside a base which supports an arc tube having a pair of electrodes at both ends and which is supported at one end. A conductor and two insulation-coated electric wires inserted from the other end side of the base are provided, the conductor and the insulation-coated electric wire are connected to each other inside the base, and the base is provided with at least the insulation of the base. A conductive cover is fixed so as to cover the outer peripheral surface of the portion where the covered electric wire is located, and an electrostatic shield is connected to one end of this cover to cover the insulating covered electric wire with the electrostatic shield. ..
【００１０】また、本発明の自動車前照灯用メタルハラ
イドランプは、上記の構成に加えて、口金の外周面の周
方向に全周にわたってＯリング固定用溝を設け、この溝
にＯリングをはめ込んで、前記口金と導電性カバーとの
間に前記Ｏリングを介在させた構成を有する。In addition to the above structure, the metal halide lamp for an automobile headlight according to the present invention is provided with an O-ring fixing groove in the circumferential direction of the outer peripheral surface of the base, and the O-ring is fitted into this groove. The O-ring is interposed between the base and the conductive cover.
【００１１】[0011]
【作用】本発明によれば、口金を導電性カバーで、また
絶縁被覆電線を静電シールドでそれぞれ覆っているた
め、ランプ起動時および動程中に口金および絶縁被覆電
線から発生するノイズを減少することができる。また、
静電シールドと導電性カバーとを接続し、このカバーを
口金の少なくとも前記絶縁被覆電線が位置する部分の外
周面を覆うように口金に固着することにより、静電シー
ルドがカバーで保持されるため、使用中、ランプに振動
等が加わっても、静電シールドがずれて絶縁被覆電線が
露出するおそれがなく、したがって、静電シールドのず
れによるノイズの漏洩をなくすことができる。According to the present invention, since the base is covered with the conductive cover and the insulation-coated electric wire is covered with the electrostatic shield, noise generated from the base and the insulation-coated electric wire is reduced at the time of starting the lamp and during the operation. can do. Also,
The electrostatic shield is held by the cover by connecting the electrostatic shield and the conductive cover and fixing the cover to the base so as to cover the outer peripheral surface of at least the portion of the base where the insulating covered electric wire is located. In addition, even if vibration is applied to the lamp during use, there is no risk that the electrostatic shield will be displaced and the insulation-coated electric wire will be exposed. Therefore, noise leakage due to displacement of the electrostatic shield can be eliminated.
【００１２】また、本発明によると、口金と導電性カバ
ーとの間にＯリングを介在させることにより、口金とカ
バーとの間にすき間が生じず、自動車前照灯灯具の防水
性を図ることができる。Further, according to the present invention, since the O-ring is interposed between the base and the conductive cover, no gap is created between the base and the cover, and the waterproofness of the vehicle headlamp is achieved. You can
【００１３】[0013]
【実施例】以下、本発明の一実施例について図面を用い
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１４】図１および図２は、本発明の一実施例であ
る自動車前照灯用メタルハライドランプの要部拡大断面
図および正面図を示している。FIG. 1 and FIG. 2 are an enlarged sectional view and a front view of an essential part of a metal halide lamp for an automobile headlamp which is an embodiment of the present invention.
【００１５】図２において、発光管１は石英ガラス管の
両端に電極２，３を封着し、内部にキセノン、水銀とと
もに、ナトリウム、スカンジウム等の発光金属をハロゲ
ン化物の形で封入している。発光管１は一端側が口金４
に支持されている。図１に示すように口金４は、発光管
１の軸と直交する方向に円盤状のつば部を有する口金本
体５と、かつ外周面の周方向の３箇所にカバー固定用溝
６を有する円筒体７とを有しており、円筒体７の内部に
は隔壁８が設けられている。円盤状の蓋９は、口金４に
ねじ（図示せず）等で固着されて、口金４の円筒体７の
開口を塞いでいる。口金４および蓋９はいずれもＰＰＳ
（ポリフェニレンサルファイド）等の合成樹脂からな
る。In FIG. 2, the arc tube 1 has electrodes 2 and 3 sealed at both ends of a quartz glass tube, and a light emitting metal such as sodium and scandium in the form of a halide is sealed inside together with xenon and mercury. .. One end of the arc tube 1 is a base 4
Supported by. As shown in FIG. 1, the base 4 is a base body 5 having a disk-shaped flange portion in a direction orthogonal to the axis of the arc tube 1, and a cylinder having cover fixing grooves 6 at three circumferential positions on the outer peripheral surface. The cylindrical body 7 has a partition wall 8 provided therein. The disk-shaped lid 9 is fixed to the base 4 with a screw (not shown) or the like, and closes the opening of the cylindrical body 7 of the base 4. Both the base 4 and the lid 9 are PPS
It is made of a synthetic resin such as (polyphenylene sulfide).
【００１６】電極３に接続された外部リード線１０から
なる導体、および電極２とこれに接続された外部リード
線１１とこれに接続された電力供給線１２からなる導体
は、口金４内に隔壁８で隔離された状態で設けられてい
る。さらに、両導体には、口金４の内部にその他端側か
ら挿入された高耐圧の絶縁被覆電線１３，１４が接続さ
れている。口金４の円筒部７の内部には合成樹脂、例え
ばシリコンゴム１５が充填されている。これにより、円
筒部７の内部に設けられた金属部品間の絶縁耐圧を確保
することができる。絶縁被覆電線１３，１４は蓋９に設
けられた穴を貫通して口金４外に引き出されている。The conductor composed of the external lead wire 10 connected to the electrode 3 and the conductor composed of the electrode 2, the external lead wire 11 connected to the electrode 2 and the power supply wire 12 connected to the electrode 2 are separated from each other within the base 4. It is provided in an isolated state at 8. Furthermore, the high-voltage insulated coated electric wires 13 and 14 inserted into the base 4 from the other end side are connected to both conductors. The cylindrical portion 7 of the base 4 is filled with synthetic resin, for example, silicon rubber 15. As a result, it is possible to secure a dielectric strength between metal parts provided inside the cylindrical portion 7. The insulation-coated electric wires 13 and 14 pass through holes provided in the lid 9 and are drawn out of the base 4.
【００１７】口金４の少なくとも絶縁被覆電線１３，１
４の位置する部分の外周面は、ほぼ円筒状の導電性カバ
ー１６で覆われており、カバー１６の３箇所を口金４の
カバー固定用溝６にかしめることにより、口金４にカバ
ー１６が固着されている。カバー１６の端部には、絶縁
被覆電線１３，１４を覆う静電シールド１７の端部が重
なり合っており、カバー１６と静電シールド１７との重
なり合った部分、すなわち静電シールド１７の端部外周
面に金属リング１８が挿入され、カバー１６と静電シー
ルド１７と金属リング１８との三者が溶接等により接続
されている。これら三者はいずれも導電性材料、例えば
鉄にニッケルめっきを施したものからなる。カバー１６
に自動車前照灯具（図示せず）の金属部分が接続される
ことにより、静電シールド１７は接地されて定電位に保
たれる。At least the insulation-coated electric wires 13, 1 of the base 4
The outer peripheral surface of the portion where 4 is located is covered with a substantially cylindrical conductive cover 16, and the cover 16 is attached to the base 4 by caulking the cover fixing groove 6 of the base 4 at three locations. It is fixed. The end of the cover 16 is overlapped with the end of the electrostatic shield 17 that covers the insulation-coated wires 13 and 14, and the overlapped portion of the cover 16 and the electrostatic shield 17, that is, the outer periphery of the end of the electrostatic shield 17. The metal ring 18 is inserted into the surface, and the cover 16, the electrostatic shield 17, and the metal ring 18 are connected by welding or the like. All of these three are made of a conductive material such as iron plated with nickel. Cover 16
The electrostatic shield 17 is grounded and kept at a constant potential by connecting a metal part of a vehicle headlamp (not shown) to the.
【００１８】絶縁被覆電線１３，１４には、点灯装置
（図示せず）が接続される。以上のように、本発明の実
施例によれば、口金４に、その少なくとも絶縁被覆電線
１３，１４が位置する部分の外周面を覆うようにカバー
１６を固着し、このカバー１６の一端部に静電シールド
１７を接続することにより、絶縁被覆電線１３，１４を
静電シールド１７で覆っているので、ランプ起動時およ
び動程中に絶縁被覆電線１３，１４から発生するノイズ
を減少することができ、またランプ使用中、振動等で静
電シールド１７がずれて絶縁被覆電線１３，１４が露出
することがなく、そのため、静電シールド１７のずれに
よるノイズの漏洩をなくすことができる。A lighting device (not shown) is connected to the insulation-coated electric wires 13 and 14. As described above, according to the embodiment of the present invention, the cover 16 is fixed to the base 4 so as to cover at least the outer peripheral surface of the portion where the insulated wires 13 and 14 are located, and one end of the cover 16 is attached. By connecting the electrostatic shield 17, the insulation-coated electric wires 13 and 14 are covered with the electrostatic shield 17, so that noise generated from the insulation-coated electric wires 13 and 14 at the time of starting the lamp and during the travel can be reduced. Moreover, during use of the lamp, the electrostatic shield 17 does not shift due to vibration or the like to expose the insulating coated wires 13 and 14, and therefore noise leakage due to the displacement of the electrostatic shield 17 can be eliminated.
【００１９】次に、本発明の効果を確認した実験例につ
いて説明する。電波無響室にて図１および図２に示す構
造の本発明のランプと、図１および図２に示す構造から
カバー１６および静電シールド１７を取り外した構造の
従来例ランプとを点灯し、ランプから発生するＡＭ帯ノ
イズの測定を行った。ノイズ測定には自動車搭載時を模
擬した台上試験を行った。その結果、本発明のランプ
は、起動時のＡＭ帯ノイズが従来例のランプのそれに比
べて約１／３に減少することが確認された。さらに、本
発明のランプでは、動程中のＡＭ帯ノイズも減少するこ
とが確認された。Next, description will be given of experimental examples for confirming the effects of the present invention. In the anechoic chamber, the lamp of the present invention having the structure shown in FIGS. 1 and 2 and the conventional lamp having the structure shown in FIGS. 1 and 2 with the cover 16 and the electrostatic shield 17 removed are lit. The AM band noise generated from the lamp was measured. For noise measurement, a bench test simulating when mounted on a car was performed. As a result, it was confirmed that the lamp of the present invention reduces the AM band noise at startup to about 1/3 of that of the lamp of the conventional example. Furthermore, it has been confirmed that the lamp of the present invention also reduces AM band noise during travel.
【００２０】また、ランプの耐振性および耐衝撃性につ
いてはＪＩＳ Ｄ５５００の５．４および５．５に示さ
れる試験方法による試験の結果、静電シールド１７の口
金４からの外れは生じず、振動等にも十分に耐え得るこ
とが確認された。Regarding the vibration resistance and shock resistance of the lamp, as a result of the test according to the test method specified in JIS D5500, 5.4 and 5.5, the electrostatic shield 17 did not come off from the base 4 and vibrated. It was confirmed that it could withstand such problems.
【００２１】図３は、本発明の他の実施例を示すもの
で、防水構造としたものである。すなわちこの場合は、
口金４の外周面に周方向に全周にわたってＯリング固定
用溝１９を設け、この溝にＯリング２０をはめ込み、口
金４と導電性カバー１６との間にＯリング２０を介在さ
せたものである。FIG. 3 shows another embodiment of the present invention, which has a waterproof structure. That is, in this case,
An O-ring fixing groove 19 is provided on the outer peripheral surface of the base 4 in the circumferential direction, and an O-ring 20 is fitted in the groove, and the O-ring 20 is interposed between the base 4 and the conductive cover 16. is there.
【００２２】このような構成によれば、万一雨水等が静
電シールド１７を伝わって口金４とカバー１６とのすき
間を通り灯具内（図示せず）に浸入しようとしても、そ
の両者間に介在させたＯリング２０によって、その浸入
が阻止されるため、ランプ動程中、ランプの熱で発生し
た水蒸気が発光管１および灯具のガラス（図示せず）等
に付着し、ランプに悪影響を及ぼすことを回避すること
ができる。すなわち、水分等が灯具の前面ガラス等に付
着し、これが曇ってしまうことを阻止することができ
る。According to such a structure, even if rainwater or the like travels through the electrostatic shield 17 and passes through the gap between the base 4 and the cover 16 and enters the inside of the lamp (not shown), it is between them. The intervening O-ring 20 prevents the penetration of the O-ring 20, so that water vapor generated by the heat of the lamp adheres to the arc tube 1 and the glass (not shown) of the lamp during the movement of the lamp, which may adversely affect the lamp. It can be avoided. That is, it is possible to prevent moisture and the like from adhering to the front glass or the like of the lamp and becoming cloudy.
【００２３】なお、上記の実施例では、静電シールド１
７として金属網を用いた場合について説明したが、銅テ
ープ、金属製パイプ等の導電性材料を使用してもよい。
また、上記実施例では、静電シールド１７に接続したカ
バー１６を口金４に固着する手段として、かしめを用い
たが、接着、圧入、ねじ込み等の手段を用いることがで
きる。In the above embodiment, the electrostatic shield 1
Although the case where a metal net is used as 7 has been described, a conductive material such as a copper tape or a metal pipe may be used.
Further, in the above embodiment, the caulking is used as the means for fixing the cover 16 connected to the electrostatic shield 17 to the base 4, but means such as adhesion, press fitting, screwing or the like can be used.
【００２４】[0024]
【発明の効果】以上説明したように、本発明は、ランプ
起動時および動程中に絶縁被覆電線等から発生するノイ
ズを減少することができるため、ラジオ等の車載機器に
悪影響を及ぼすのを防止することができる。また、ラン
プ使用中、ランプに加わる振動等によって、静電シール
ドがずれて絶縁被覆電線が露出するおそれがなく、した
がって、静電シールドのずれによるノイズの漏洩をなく
すことができる。さらに口金とカバーとの間にＯリング
を介在させることで、水等が灯具内に浸入するのを阻止
することができ、ランプの熱で発生した水蒸気によって
灯具の前面ガラスが曇ってしまうのを阻止することがで
きる。As described above, according to the present invention, noise generated from the insulation-coated wire or the like at the time of starting the lamp and during the travel can be reduced. Can be prevented. Further, during use of the lamp, there is no possibility that the electrostatic shield will be displaced and the insulated coated electric wire will be exposed due to vibrations applied to the lamp, and therefore noise leakage due to the displacement of the electrostatic shield can be eliminated. Further, by interposing an O-ring between the base and the cover, it is possible to prevent water and the like from entering the lamp, and to prevent the front glass of the lamp from becoming fogged by the steam generated by the heat of the lamp. Can be stopped.
【図１】本発明の一実施例である自動車前照灯用メタル
ハライドランプの一部切欠拡大正面図FIG. 1 is a partially cutaway enlarged front view of a metal halide lamp for a vehicle headlamp according to an embodiment of the present invention.
【図２】同じく正面図[FIG. 2] Similarly, a front view
【図３】本発明の他の実施例である自動車前照灯用メタ
ルハライドランプの一部切欠拡大正面図FIG. 3 is a partially cutaway enlarged front view of a metal halide lamp for a vehicle headlamp according to another embodiment of the present invention.
１ 発光管 ２，３ 電極 ４ 口金 ６ カバー固定用溝 ７ 円筒体 １０，１１ 外部リード線 １２ 電力供給線 １３，１４ 絶縁被覆電線 １６ カバー １７ 静電シールド １８ 金属リング １９ Ｏリング固定用溝 ２０ Ｏリング DESCRIPTION OF SYMBOLS 1 arc tube 2, 3 electrode 4 base 6 groove for fixing cover 7 cylindrical body 10, 11 external lead wire 12 power supply wire 13, 14 insulating coated electric wire 16 cover 17 electrostatic shield 18 metal ring 19 groove for fixing O ring 20 O ring
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｆ２１Ｖ 23/00 ３８０ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location // F21V 23/00 380
Claims (2)
端側に支持した口金の内部に、前記電極にそれぞれ接続
された導体と、前記口金の他端側から挿入した２本の絶
縁被覆電線とを設け、前記口金の内部で前記導体と前記
絶縁被覆電線とをそれぞれ接続し、前記口金に、この口
金の少なくとも前記絶縁被覆電線が位置する部分の外周
面を覆うように導電性カバーを固着し、このカバーの一
端部に静電シールドを接続することにより、前記絶縁被
覆電線を前記静電シールドで覆ったことを特徴とする自
動車前照灯用メタルハライドランプ。1. A conductor connected to each of the electrodes and two insulating members inserted from the other end of the base, inside a base which supports an arc tube having a pair of electrodes at both ends on one end side. A coated electric wire is provided, and the conductor and the insulating covered electric wire are respectively connected inside the base, and the conductive cover is provided on the base so as to cover at least the outer peripheral surface of the base where the insulating covered electric wire is located. A metal halide lamp for a vehicle headlamp, characterized in that the insulation-coated electric wire is covered with the electrostatic shield by fixing the above, and connecting an electrostatic shield to one end of this cover.
端側に支持した口金の内部に、前記電極にそれぞれ接続
された導体と、前記口金の他端側から挿入した２本の絶
縁被覆電線とを設け、前記口金の内部で前記導体と前記
絶縁被覆電線とをそれぞれ接続し、かつ前記口金の外周
面の周方向に全周にわたってＯリング固定用溝を設け、
この溝にＯリングをはめ込み、前記口金に、この口金の
少なくとも前記絶縁被覆電線が位置する部分の外周面を
覆うように導電性カバーを固着することにより、前記口
金と前記カバーとの間に前記Ｏリングを介在させ、さら
に前記カバーの一端部に静電シールドを接続して前記絶
縁被覆電線を前記シールドで覆ったことを特徴とする自
動車前照灯用メタルハライドランプ。2. A conductor connected to each of the electrodes and two insulations inserted from the other end side of the base, inside a base supporting an arc tube having a pair of electrodes provided at both ends on one end side. A coated electric wire is provided, the conductor and the insulating coated electric wire are respectively connected inside the base, and an O-ring fixing groove is provided over the entire circumference in the circumferential direction of the outer peripheral surface of the base,
An O-ring is fitted into this groove, and a conductive cover is fixed to the base so as to cover at least the outer peripheral surface of the base where the insulating covered electric wire is located, whereby the base is provided between the base and the cover. A metal halide lamp for a vehicle headlamp, wherein an O-ring is interposed, an electrostatic shield is connected to one end of the cover, and the insulation-coated electric wire is covered with the shield.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3-317674 | 1991-12-02 | ||
| JP31767491 | 1991-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05211002A true JPH05211002A (en) | 1993-08-20 |
| JP3115673B2 JP3115673B2 (en) | 2000-12-11 |
Family
ID=18090762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP460792A Expired - Fee Related JP3115673B2 (en) | 1991-12-02 | 1992-01-14 | Metal halide lamps for automotive headlights |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3115673B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0620466U (en) * | 1992-03-13 | 1994-03-18 | 村田機械株式会社 | Spinning equipment |
| CN1313692C (en) * | 2004-04-07 | 2007-05-02 | 西南交通大学 | Sliding pin type mechanical core of lock |
| KR102177533B1 (en) * | 2018-12-14 | 2020-11-11 | 대한민국 | Insect suction device for testing tiny harmful insects |
-
1992
- 1992-01-14 JP JP460792A patent/JP3115673B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3115673B2 (en) | 2000-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |