JPH0641337Y2 - Flash lamp - Google Patents
Flash lampInfo
- Publication number
- JPH0641337Y2 JPH0641337Y2 JP13676289U JP13676289U JPH0641337Y2 JP H0641337 Y2 JPH0641337 Y2 JP H0641337Y2 JP 13676289 U JP13676289 U JP 13676289U JP 13676289 U JP13676289 U JP 13676289U JP H0641337 Y2 JPH0641337 Y2 JP H0641337Y2
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- flash lamp
- recess
- substrate
- edge portion
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/80—Lamps suitable only for intermittent operation, e.g. flash lamp
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、ガスを充填された光透過性容器内に２つの電
極を含み、その際陰極が基体とこの基体に結合された焼
結体とから構成されるフラッシュランプに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention comprises two electrodes in a gas-filled light-transmissive container, the cathode being a substrate and a sintered body bonded to this substrate. And a flash lamp composed of.
活性化剤として使われる焼結体が高圧力で基体上に押付
けられ、そこで強固に焼結されるようにしたこの種のフ
ラッシュランプは公知である。焼結体は基体の円錐状突
起を包囲する。このような構成によれば、確かに焼結体
と基体との間に良好な熱伝導が得られ、それゆえアーク
によって蒸発する材料が容器内壁に蒸着するのが減少す
る。Flash lamps of this kind are known in which the sinter, which is used as activator, is pressed onto the substrate with high pressure and is sintered firmly there. The sintered body surrounds the conical protrusions of the substrate. With such a configuration, good heat transfer is certainly obtained between the sintered body and the substrate, and therefore the evaporation of the material evaporated by the arc on the inner wall of the container is reduced.
しかしながら、アークは容器壁の近くを通るので、容器
壁はその内面を溶かされることがある。However, since the arc passes near the vessel wall, the vessel wall may be melted on its inner surface.
そこで、本考案は、基体と焼結体との間に良好な熱伝導
が得られると共に、材料蒸発に起因する容器内面上への
被膜形成が僅少となり、しかもアークは陰極領域では容
器内面の溶融危険が除かれるように容器内面から離隔す
るように、冒頭で述べた種類のフラッシュランプを改良
することを課題とする。Therefore, in the present invention, good heat conduction can be obtained between the substrate and the sintered body, and the film formation on the inner surface of the container due to the evaporation of the material is slight, and the arc melts the inner surface of the container in the cathode region. It is an object to improve a flashlamp of the kind mentioned at the outset such that it is separated from the inner surface of the container in a risk-free manner.
この課題を解決するために、本考案は、焼結体は基体の
端面に設けられた窪み内にこの窪みから突出しないよう
に挿置されること特徴とする。In order to solve this problem, the present invention is characterized in that the sintered body is inserted into a recess provided in the end surface of the base so as not to project from the recess.
特に、焼結体が基体の環状縁部によって囲繞され、その
縁部が焼結体よりも突出するようにすると、アークは容
器内面から安全な間隔を保って案内される。In particular, the arc is guided at a safe distance from the inner surface of the container when the sintered body is surrounded by the annular edge of the base body and the edge projects beyond the sintered body.
窪みの底部が円錐状に形成されると、基体と焼結体との
間に特に良好な熱伝導が保証される。A conical bottom of the recess ensures particularly good heat transfer between the base body and the sintered body.
次に、本考案の実施例を図面に基づいて詳細に説明す
る。Next, an embodiment of the present invention will be described in detail with reference to the drawings.
図は本考案の一実施例を示す概略図である。図におい
て、ガラス管１内には塊状タングステンから成る基体２
が封入されており、この基体２はガラス管１の内部側端
面に窪み３を有し、この窪み３内には多孔性含浸タング
ステンから成る焼結体４が活性化剤として設けられてい
る。基体２は焼結体４よりも突出してその焼結体４を囲
繞する環状縁部５を有している。窪み３は円筒状に形成
され、その底部が円錐状に成形されている。FIG. 1 is a schematic view showing an embodiment of the present invention. In the figure, a glass tube 1 has a base 2 made of lumped tungsten.
The base 2 has a recess 3 on the inner end surface of the glass tube 1, and a sintered body 4 made of porous impregnated tungsten is provided in the recess 3 as an activator. The base body 2 has an annular edge portion 5 projecting from the sintered body 4 and surrounding the sintered body 4. The recess 3 is formed in a cylindrical shape, and its bottom is formed in a conical shape.
アーク６は焼結体４から発生するが、その際陰極２、４
の領域ではガラス管１に対して安全な間隔を保持してい
る。The arc 6 is generated from the sintered body 4, in which case the cathodes 2, 4
In the area (1), a safe distance from the glass tube 1 is maintained.
好ましい寸法は次の通りである。The preferred dimensions are:
基体２の直径： ３〜8mm 縁部５の厚さ： 0.5〜1mm 縁部５の端面と焼結体４との間隔： 0.5mm 図示された実施例においては、縁部５の端面と焼結体４
の端面との間隔を大きくすると、焼結体４の寿命を高め
ることが出来る。他方、点弧はこの間隔が小さければ小
さい程好ましい。それゆえ、高い寿命を得ると共に、確
実な点弧が行われるようにするために両者の良好な妥協
が図られ、各部の寸法は上述した値の範囲内に置かれ
る。Diameter of the base body 2: 3 to 8 mm Thickness of the edge portion 5: 0.5 to 1 mm Distance between the end surface of the edge portion 5 and the sintered body 4: 0.5 mm In the illustrated embodiment, the end surface of the edge portion 5 is sintered. Body 4
The life of the sintered body 4 can be increased by increasing the distance from the end surface of the sintered body 4. On the other hand, the smaller the interval, the more preferable the ignition. Therefore, in order to obtain a long life and ensure a reliable ignition, a good compromise between the two is made, and the dimensions of each part are set within the above-mentioned range of values.
図は本考案の一実施例を示す概略図である。 １……ガラス管 ２……基体 ３……窪み ４……焼結体 ５……縁部 ６……アーク FIG. 1 is a schematic view showing an embodiment of the present invention. 1 ... Glass tube 2 ... Substrate 3 ... Dimple 4 ... Sintered body 5 ... Edge 6 ... Arc
Claims (3)
２つの電極を含み、陰極が基体（２）とこの基体に結合
された焼結体（４）とから構成されるフラッシュランプ
において、前記焼結体（４）は前記基体（２）の端面に
設けられた窪み（３）内にこの窪みから突出しないよう
に挿置されされていること特徴とするフラッシュラン
プ。1. A flash comprising two electrodes in a gas-filled light-transmissive container (1), the cathode of which is composed of a substrate (2) and a sintered body (4) bonded to the substrate. In the lamp, a flash lamp characterized in that the sintered body (4) is inserted into a recess (3) provided in an end surface of the base body (2) so as not to project from the recess.
縁部（５）によって囲繞され、前記縁部（５）は前記焼
結体（４）よりも突出していることを特徴とする請求項
１記載のフラッシュランプ。2. The sintered body (4) is surrounded by an annular edge portion (5) of the base body (2), the edge portion (5) protruding from the sintered body (4). The flash lamp according to claim 1, wherein the flash lamp is a flash lamp.
ていることを特徴とする請求項１または２記載のフラッ
シュランプ。3. The flash lamp according to claim 1, wherein a bottom of the recess (3) is formed in a conical shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP88119917A EP0371164A1 (en) | 1988-11-29 | 1988-11-29 | Flash lamp |
| EP88119917.8 | 1988-11-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0279557U JPH0279557U (en) | 1990-06-19 |
| JPH0641337Y2 true JPH0641337Y2 (en) | 1994-10-26 |
Family
ID=8199615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13676289U Expired - Lifetime JPH0641337Y2 (en) | 1988-11-29 | 1989-11-24 | Flash lamp |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0371164A1 (en) |
| JP (1) | JPH0641337Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10039383A1 (en) | 2000-08-11 | 2002-02-28 | Perkinelmer Optoelectronics | Flash lamp and flash lamp construction |
| JP5652615B2 (en) * | 2011-03-18 | 2015-01-14 | ウシオ電機株式会社 | Flash lamp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3240359A1 (en) * | 1982-11-02 | 1984-05-03 | W.C. Heraeus Gmbh, 6450 Hanau | "ELECTRODE FOR LASER EXCITATION LAMPS" |
| DE8704316U1 (en) * | 1987-02-27 | 1988-06-30 | Heimann Gmbh, 6200 Wiesbaden, De |
-
1988
- 1988-11-29 EP EP88119917A patent/EP0371164A1/en not_active Withdrawn
-
1989
- 1989-11-24 JP JP13676289U patent/JPH0641337Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0371164A1 (en) | 1990-06-06 |
| JPH0279557U (en) | 1990-06-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |