JPH05817B2 - - Google Patents
Info
- Publication number
- JPH05817B2 JPH05817B2 JP59115796A JP11579684A JPH05817B2 JP H05817 B2 JPH05817 B2 JP H05817B2 JP 59115796 A JP59115796 A JP 59115796A JP 11579684 A JP11579684 A JP 11579684A JP H05817 B2 JPH05817 B2 JP H05817B2
- Authority
- JP
- Japan
- Prior art keywords
- contact rod
- glass member
- thermally responsive
- rod
- responsive switch
- 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
- 239000011521 glass Substances 0.000 claims description 24
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 9
- 239000011733 molybdenum Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 7
- 229910052700 potassium Inorganic materials 0.000 claims description 7
- 239000011591 potassium Substances 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 238000001953 recrystallisation Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910001507 metal halide Inorganic materials 0.000 description 2
- 150000005309 metal halides Chemical class 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/541—Igniting arrangements, e.g. promoting ionisation for starting using a bimetal switch
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
- Contacts (AREA)
Description
産業上の利用分野
本発明は高圧金属蒸気放電灯に関するものであ
る。
従来例の構成とその問題点
従来、高圧金属蒸気放電灯においては、ランプ
の始動電圧を低下させる目的で、主電極に近接し
て補助電極を設け、これに始動抵抗器を介して反
対電位を印加し、安定動作中は主電極と補助電極
とを短絡し同電位にするための熱応動スイツチを
有するものや、安定動作中は補助電極を電気的に
切り離して電位を取り除くための熱応動スイツチ
を有するものが知られている。前記熱応動スイツ
チはガラス部材と、前記ガラス部材の一端側に、
一端が埋め込まれた接点棒と、前記ガラス部材の
他端に一端が埋め込まれた支持棒と、この支持棒
の他端に接続された熱応動片を有しており、前記
接点棒はタングステンまたはモリブデンからなる
棒の一端部をマウント部材に溶接して接続した構
造を採つている。
しかしながら、前記接点棒とマウント部材とを
溶接する際に、接点棒が局部的に再結晶温度以上
の高熱になつて、再結晶を起こし、強度や硬度が
低下する。さらに脆化して、初期および寿命末期
までに非常に折れやすくなる。またタングステン
の場合は、これらの欠点以外に、溶接時の圧力に
よつて、さけや折れが発生していた。
そこで従来、接点棒の溶接部にニツケルスリー
ブを挿入し、上記の欠点をなくすようにしていた
が、抜本的な対策にはいたつていなかつた。
さらに、ガラス部材の一端側に接点棒を埋め込
む際に、前記ガラス部材と前記接点棒を加熱させ
て、接点棒の端部を酸化させ、ガラス部材との接
着強度を高めている。そのため、接点棒は、前記
溶接の際と同様に、再結晶温度以上になり接点棒
が再結晶を起こし、強度や硬度が低下し、さらに
脆化して初期および寿命末期までにきわめて折れ
やすいという欠点もあつた。このように接点棒が
折れると、熱応動スイツチがランプ安定動作中に
主・補助極間を短絡するランプにおいては、ラン
プ点灯中主・補助極間に直流成分が発生し、発光
管ピンチ部にクラツクが発生し、早期不点とな
る。一方、熱応動スイツチが、ランプ安定動作
中、補助電極を電気的に切り離して電位を取り除
くランプにおいては、接点棒が折れると、ランプ
の始動が困難となり不点といつた問題点があつ
た。
発明の目的
本発明は、熱応動スイツチの接点棒が寿命中を
通じて折れることがなく、寿命末期まで安定に点
灯できる高圧金属蒸気放電灯を提供するものであ
る。
発明の構成
本発明は、熱応動スイツチが、ガラス部材と、
前記ガラス部材の一端側に、一端が埋め込まれた
接点棒と、前記ガラス部材の他端側に一端が埋め
込まれた支持棒と、この支持棒の他端に接続され
た熱応動片とを有し、前記接点棒が、カリウムお
よびシリコンのうち少なくとも一種の酸化物をド
ープしたモリブデンからなることを特徴とする高
圧金属蒸気放電灯であり、寿命末期まで安定に点
灯できるようにしたものである。
実施例の説明
以下、本発明の一実施例について図面を用いて
説明する。
第１図は本発明の一実施例であるメタルハライ
ドランプの構造図を示す。同図において、１は右
英製の発光管で、両端部に設けられた主電極２の
一方に近接して補助電極３が設けられている。発
光管１の内径は30mmで、電極間距離は約155mmで
ある。発光管１内には水銀とともに、ナトリウ
ム、タリウム、スカンジウム、およびセシウムの
沃化物と、始動用ガスとしての窒素−0.5％アル
ゴンの混合ガスが封入されている。発光管１は、
外管４内に組込まれ、ステム５に取り付けられた
ステム支持線６、およびこれに取り付けられた発
光管支持板７を介して保持されている。主電極２
のリードは、各々ステム線８に電気的に接続され
ている。補助電極３のリードには点灯時に補助電
極３を切り離し、電位を取り除くように、後述す
る熱応動スイツチ９が電気的に接続されている。
外管４内にはネオン−40％窒素の混合ガスが
400Torr封入されている。
上記熱応動スイツチ９等について第２図ａ，ｂ
を用いてつぎに詳しく説明する。この熱応動スイ
ツチ９は、電気的に絶縁して連結するガラス部材
１１と、前記ガラス部材１１の一端側に埋め込ま
れた接点棒１２と、前記ガラス部材１１の他端側
に埋め込まれた支持棒１３からなるバイメタル板
１４の取り付け部を有し、前記支持棒１３に最高
使用温度が500℃である耐熱性のバイメタル板１
４、およびその一端部に溶接により固定された可
動接点棒１５からなる熱応動部を有している。こ
の例では、支持棒１３の一端部はバイメタル板１
４が溶接によつて固定されており、その延長部は
始動用抵抗器１０を介して、補助電極３のリード
に溶接により固定接続されている（第１図参照）。
一方、ガラス部材１１に埋め込まれた接点棒１２
は、カリウム300ppmおよびシリコン300ppmのう
ち少なくとも一種の酸化物をドープし、不純物と
してナトリウム70ppm、アルミニウム80ppmを混
合した線径0.8mmのモリブデン棒からなり、その
他端をステム支持線６に溶接により固定接続され
ている。なお、モリブデン中のカリウムのドープ
量は100〜400ppm、同じくシリコンのドープ量は
100〜300ppmがそれぞれ適当である。
以上のように、本発明は、熱応動スイツチが、
ガラス部材と、前記ガラス部材の一端側に、一端
が埋め込まれた接点棒と、前記ガラス部材の他端
側に一端が埋め込まれた支持棒と、この支持棒の
他端に接続された熱応動片とを有し、前記接点棒
がカリウム（Ｋ）およびシリコン（Si）のうち少
なくとも一種の酸化物をドープしたモリブデンか
らなるので、接点棒の再結晶温度が高くなり、溶
接時の熱による再結晶や、ガラス部材に加熱して
埋め込む際の再結晶を少なくすることが可能とな
り、接点棒の折れや、さけをなくすことができ
る。また寿命中を通じても折れや、さけがなくな
り、高圧金属蒸気放電灯を寿命末期まで安定に点
灯できるものである。
次に本発明の具体的な例を説明する。
熱応動スイツチ９の接点棒１２として、カリウ
ムおよびシリコンのうち少なくとも一種の酸化物
をドープしたモリブデンを用い、ガラス部材１１
として耐熱ガラスを用い、支持線１３としてタン
グステンのスプリングコイルを用い、可動接点棒
１５としてダングステン棒を用いて、第１図に示
す構造の2000Wのメタルハライドランプ20本を製
作し、振動試験および点灯試験、さらに熱応動ス
イツチの接点棒の溶接部とガラス部材埋め込み付
近の折り曲げ試験をしたところ、それぞれ第１
表、第２表および第３表に示す結果となつた。
INDUSTRIAL APPLICATION FIELD OF THE INVENTION The present invention relates to high pressure metal vapor discharge lamps. Conventional configuration and its problems Conventionally, in high-pressure metal vapor discharge lamps, an auxiliary electrode is provided close to the main electrode in order to reduce the lamp starting voltage, and an opposite potential is applied to this via a starting resistor. One has a thermally responsive switch that short-circuits the main electrode and auxiliary electrode to make them have the same potential during stable operation, and the other has a thermally responsive switch that electrically disconnects the auxiliary electrode and removes the potential during stable operation. It is known that it has The thermally responsive switch includes a glass member and one end side of the glass member.
It has a contact rod with one end embedded, a support rod with one end embedded in the other end of the glass member, and a thermally responsive piece connected to the other end of the support rod, and the contact rod is made of tungsten or It has a structure in which one end of a rod made of molybdenum is welded to the mount member. However, when welding the contact rod and the mount member, the contact rod locally becomes heated to a temperature higher than the recrystallization temperature, causing recrystallization, resulting in a decrease in strength and hardness. It also becomes brittle and becomes very brittle initially and by the end of its life. Furthermore, in the case of tungsten, in addition to these drawbacks, sagging and folding occur due to the pressure during welding. Conventionally, a nickel sleeve was inserted into the welded part of the contact rod in an attempt to eliminate the above drawback, but no drastic countermeasure was achieved. Furthermore, when embedding the contact rod in one end of the glass member, the glass member and the contact rod are heated to oxidize the end of the contact rod to increase the adhesive strength with the glass member. Therefore, as in the case of welding, the contact rod reaches a temperature higher than the recrystallization temperature and recrystallizes, resulting in a decrease in strength and hardness, and furthermore, it becomes brittle and has the disadvantage of being extremely susceptible to breakage at the beginning and at the end of its life. It was hot too. If the contact rod breaks in this way, in lamps where the thermally responsive switch shorts the main and auxiliary poles during stable operation of the lamp, a DC component will be generated between the main and auxiliary poles while the lamp is on, causing damage to the pinched part of the arc tube. Cracks occur, resulting in early failures. On the other hand, in lamps in which a thermally responsive switch electrically disconnects the auxiliary electrode to remove the potential during stable operation of the lamp, there is a problem in that if the contact rod breaks, it becomes difficult to start the lamp, resulting in a problem. OBJECTS OF THE INVENTION The present invention provides a high-pressure metal vapor discharge lamp in which the contact rod of the thermally responsive switch does not break throughout its life and can be stably lit until the end of its life. Structure of the Invention The present invention provides a thermally responsive switch that includes a glass member and
A contact rod having one end embedded in one end of the glass member, a support rod having one end embedded in the other end of the glass member, and a thermally responsive piece connected to the other end of the support rod. The high-pressure metal vapor discharge lamp is characterized in that the contact rod is made of molybdenum doped with an oxide of at least one of potassium and silicon, and is capable of stably lighting until the end of its life. DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a structural diagram of a metal halide lamp which is an embodiment of the present invention. In the figure, reference numeral 1 denotes a light emitting tube manufactured by U.S. Corporation, and an auxiliary electrode 3 is provided close to one of main electrodes 2 provided at both ends. The inner diameter of the arc tube 1 is 30 mm, and the distance between the electrodes is about 155 mm. The arc tube 1 is filled with mercury, iodides of sodium, thallium, scandium, and cesium, and a mixed gas of nitrogen and 0.5% argon as a starting gas. The arc tube 1 is
It is incorporated into the outer tube 4 and is held via a stem support line 6 attached to the stem 5 and an arc tube support plate 7 attached thereto. Main electrode 2
The leads are each electrically connected to the stem wire 8. A thermally responsive switch 9, which will be described later, is electrically connected to the lead of the auxiliary electrode 3 so as to disconnect the auxiliary electrode 3 and remove the potential when the lamp is turned on.
Inside the outer tube 4, there is a neon-40% nitrogen gas mixture.
400Torr is enclosed. Figure 2 a and b for the thermally responsive switch 9, etc.
This will be explained in detail below using . This thermally responsive switch 9 includes a glass member 11 that is electrically insulated and connected, a contact rod 12 embedded in one end of the glass member 11, and a support rod embedded in the other end of the glass member 11. A heat-resistant bimetal plate 1 having a maximum operating temperature of 500° C. is attached to the support rod 13.
4 and a movable contact rod 15 fixed to one end thereof by welding. In this example, one end of the support rod 13 is connected to the bimetal plate 1.
4 is fixed by welding, and its extension is fixedly connected by welding to the lead of the auxiliary electrode 3 via the starting resistor 10 (see FIG. 1).
On the other hand, the contact rod 12 embedded in the glass member 11
consists of a molybdenum rod with a wire diameter of 0.8 mm doped with at least one oxide of 300 ppm potassium and 300 ppm silicon, and mixed with 70 ppm sodium and 80 ppm aluminum as impurities, and the other end is fixedly connected to the stem support wire 6 by welding. has been done. The amount of potassium doped in molybdenum is 100 to 400 ppm, and the amount of silicon doped is also 100 to 400 ppm.
100 to 300 ppm is appropriate. As described above, the present invention provides a thermally responsive switch that
a glass member, a contact rod having one end embedded in one end of the glass member, a support rod having one end embedded in the other end of the glass member, and a thermally responsive contact rod connected to the other end of the support rod. Since the contact rod is made of molybdenum doped with an oxide of at least one of potassium (K) and silicon (Si), the recrystallization temperature of the contact rod is high, and the recrystallization temperature due to heat during welding is increased. It is possible to reduce crystals and recrystallization when heating and embedding in a glass member, and it is possible to eliminate bending and cracking of the contact rod. Furthermore, there is no bending or cracking throughout the life of the lamp, and the high-pressure metal vapor discharge lamp can be stably lit until the end of its life. Next, a specific example of the present invention will be explained. The contact rod 12 of the thermally responsive switch 9 is made of molybdenum doped with at least one oxide of potassium and silicon, and the glass member 11 is made of molybdenum doped with at least one oxide of potassium and silicon.
Twenty 2000W metal halide lamps with the structure shown in Figure 1 were manufactured using heat-resistant glass as the support wire 13, a tungsten spring coil as the support wire 13, and a dungsten rod as the movable contact rod 15, and were subjected to vibration tests and lighting tests. Furthermore, when we conducted a bending test near the welded part of the contact rod of the thermally responsive switch and the area embedded in the glass member, we found that the first
The results are shown in Tables 2 and 3.
【表】【table】
【表】【table】
【表】
上記第１表、第２表および第３表から明らかな
ように、振動試験、点灯試験および折曲げ試験に
対して、試料No.１および試料No.２の接点棒（タン
グステン）の場合、Niスリーブで補強をしても、
どの試験においても、ほとんど悪い結果となる。
また、試料No.３のNiスリーブなしの接点棒（モ
リブデン）の場合でも、ほとんどかわらない結果
となり不可となつた。さらに、試料No.４のモリブ
デンの接点棒にNiスリーブを使用した場合、あ
る程度改善はなされたが抜本的な改善にいたつて
おらず、また寿命末期までにランプ不点が発生す
るものがある。
一方、試料No.５ないしNo.７のものにおいては、
Niスリーブがなくても、どの試験においてもい
ずれも、折れ、さけが発生せず、良好な寿命特性
が維持できた。
なお、上記実施例では、熱応動スイツチ９とし
て、ランプ点灯時、補助電極３を電気的に切り離
し、電位を取り除くようにしたものを用いた例を
説明したが、点灯時、補助電極３とこれと近接す
る主電極２とを同電位にするようにした、熱応動
スイツチを用いてもよい。
発明の効果
以上説明したように、本発明は、熱応動スイツ
チの接点棒に、溶接および溶着の際の熱や、圧力
による折れ、さけが発生せず、また耐振に対して
も、良好な性能を維持することができ、寿命末期
まで安定に点灯できる高圧金属蒸気放電灯を提供
することができるものである。[Table] As is clear from Tables 1, 2, and 3 above, the contact rods (tungsten) of Sample No. 1 and Sample No. 2 were tested in the vibration test, lighting test, and bending test. In this case, even if reinforced with Ni sleeve,
Almost every test results in a bad result.
In addition, even in the case of sample No. 3, a contact rod (molybdenum) without a Ni sleeve, the results were almost the same and it was rejected. Furthermore, when a Ni sleeve was used for the molybdenum contact rod of sample No. 4, although some improvement was achieved, it was not a drastic improvement, and some lamp defects occurred by the end of the life. On the other hand, in samples No. 5 to No. 7,
Even without the Ni sleeve, no breakage or cracking occurred in any of the tests, and good life characteristics were maintained. In the above embodiment, an example was explained in which the thermally responsive switch 9 is configured to electrically disconnect the auxiliary electrode 3 and remove the potential when the lamp is lit, but when the lamp is lit, the auxiliary electrode 3 and this A thermally-responsive switch may be used that sets the main electrode 2 and the adjacent main electrode 2 to the same potential. Effects of the Invention As explained above, the present invention provides the contact rod of a thermally responsive switch with no bending or cracking caused by heat or pressure during welding and welding, and with good vibration resistance. Therefore, it is possible to provide a high-pressure metal vapor discharge lamp that can maintain stable lighting conditions until the end of its life.
第１図は本発明の一実施例である高圧金属蒸気
放電灯の正面図、第２図ａ，ｂは熱応動スイツチ
の一例を拡大して示す正面図および平面図であ
る。
１……発光管、２……主電極、３……補助電
極、９……熱応動スイツチ、１０……始動用抵抗
器、１１……ガラス部材、１２……接点棒、１３
……支持棒、１４……熱応動片。
FIG. 1 is a front view of a high-pressure metal vapor discharge lamp which is an embodiment of the present invention, and FIGS. 2a and 2b are a front view and a plan view showing an enlarged example of a thermally responsive switch. DESCRIPTION OF SYMBOLS 1... Arc tube, 2... Main electrode, 3... Auxiliary electrode, 9... Thermal response switch, 10... Starting resistor, 11... Glass member, 12... Contact rod, 13
...Support rod, 14...thermally responsive piece.
Claims (1)
も一方に近接して補助電極を設け、前記主電極と
前記補助電極間を開閉するための熱応動スイツチ
を備え、前記熱応動スイツチが、ガラス部材と、
前記ガラス部材の一端側に、一端が埋め込まれた
接点棒と、前記ガラス部材の他端側に一端が埋め
込まれた支持棒と、この支持棒の他端に接続され
た熱応動片とを有し、前記接点棒が、カリウムお
よびシリコンのうち少なくとも一種の酸化物をド
ープしたモリブデンからなることを特徴とする高
圧金属蒸気放電灯。1. An auxiliary electrode is provided close to at least one of the main electrodes provided at both ends of the arc tube, and a thermally responsive switch is provided for opening and closing between the main electrode and the auxiliary electrode, and the thermally responsive switch is connected to a glass member. and,
A contact rod having one end embedded in one end of the glass member, a support rod having one end embedded in the other end of the glass member, and a thermally responsive piece connected to the other end of the support rod. A high-pressure metal vapor discharge lamp, wherein the contact rod is made of molybdenum doped with an oxide of at least one of potassium and silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59115796A JPS60258845A (en) | 1984-06-06 | 1984-06-06 | High pressure metal steam discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59115796A JPS60258845A (en) | 1984-06-06 | 1984-06-06 | High pressure metal steam discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60258845A JPS60258845A (en) | 1985-12-20 |
| JPH05817B2 true JPH05817B2 (en) | 1993-01-06 |
Family
ID=14671286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59115796A Granted JPS60258845A (en) | 1984-06-06 | 1984-06-06 | High pressure metal steam discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60258845A (en) |
-
1984
- 1984-06-06 JP JP59115796A patent/JPS60258845A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60258845A (en) | 1985-12-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |