JPS6130378B2 - - Google Patents
Info
- Publication number
- JPS6130378B2 JPS6130378B2 JP4494479A JP4494479A JPS6130378B2 JP S6130378 B2 JPS6130378 B2 JP S6130378B2 JP 4494479 A JP4494479 A JP 4494479A JP 4494479 A JP4494479 A JP 4494479A JP S6130378 B2 JPS6130378 B2 JP S6130378B2
- Authority
- JP
- Japan
- Prior art keywords
- arc tube
- temperature
- metal halide
- electrode
- tube
- 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
Links
- 229910001507 metal halide Inorganic materials 0.000 claims description 15
- 150000005309 metal halides Chemical class 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims 1
- 239000010445 mica Substances 0.000 description 6
- 229910052618 mica group Inorganic materials 0.000 description 6
- 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
- 229910052738 indium Inorganic materials 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052716 thallium Inorganic materials 0.000 description 2
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004031 devitrification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- -1 indium halides Chemical class 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 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
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
Description
【発明の詳細な説明】
本発明は、発光管内に発光物質を封入したメタ
ルハライドランプに関し、その効率と光色むらの
改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal halide lamp in which a luminescent material is enclosed in an arc tube, and relates to improvements in its efficiency and light color unevenness.
メタルハライドランプの発光管内には、高効率
でしかも白色光源が得られるよう金属ハロゲン化
物が選択されて封入されている。金属ハロゲン化
物はランプの点灯中飽和蒸気圧になるように蒸発
する量よりも多量に封入されている場合が多く蒸
発しきれなかつた金属ハロゲン化物は液状となつ
て発光管の最下部か最低温度部に凝縮している。
垂直点灯する場合、通常下側の電極後方部に凝縮
する。その結果、金属ハロゲン化物が高温にさら
されず、充分な蒸気圧が得られないために効率が
低下したり、電極後方部の最冷点温度のばらつき
によつてランプ間で蒸気圧の差が存在し光色むら
を生じたりするという欠点があつた。 A metal halide is selected and sealed in the arc tube of a metal halide lamp so as to provide a highly efficient white light source. The metal halide is often sealed in an amount larger than the amount that evaporates to reach the saturated vapor pressure during lamp operation.The metal halide that cannot be completely evaporated turns into a liquid and reaches the lowest temperature or the lowest temperature of the arc tube. It is condensed in one part.
When lighting vertically, it usually condenses at the rear of the lower electrode. As a result, metal halides are not exposed to high temperatures and sufficient vapor pressure cannot be obtained, resulting in reduced efficiency, and differences in vapor pressure between lamps due to variations in the coldest point temperature at the rear of the electrode. However, it had the disadvantage of causing color unevenness in the light.
この不都合をなくすため従来は、電極周囲の発
光管外壁付近に金属酸化膜を設けたり、金属板で
包囲したりする等の保温手段を採つていた。しか
し、低ワツト級すなわち100ワツト以下になる
と、高ワツト級に比べて発光管自体の熱量が少な
いために、従来の保温手段では充分でない。発光
管を小形にして電極後方部の最冷点温度を上昇さ
せることは一応できるが、管壁負荷（単位面積当
りのワツト負荷）を高める結果、ランプは短寿命
となる。 In order to eliminate this inconvenience, conventionally, heat insulating means such as providing a metal oxide film near the outer wall of the arc tube around the electrode or surrounding it with a metal plate have been adopted. However, in the case of low wattage, that is, 100 watts or less, the amount of heat of the arc tube itself is smaller than that of high wattage, so conventional heat retention means are not sufficient. Although it is possible to make the arc tube smaller and raise the temperature of the coldest point at the rear of the electrode, this increases the tube wall load (watt load per unit area), resulting in a short lamp life.
本発明は、上記不都合に鑑みてなされたもの
で、管壁負荷を高めることなく発光管および電極
後方付近の最冷点温度を上昇させて、効率と光色
むらを改善したメタルハライドランプを提供する
ものである。 The present invention has been made in view of the above-mentioned disadvantages, and provides a metal halide lamp that improves efficiency and light color unevenness by increasing the coldest point temperature near the back of the arc tube and electrodes without increasing the load on the tube wall. It is something.
以下本発明の一実施例を図面とともに説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
第１図において、発光管１の内部にはナトリウ
ム、タリウム、インジウム、スカンジウム等のハ
ロゲン化物が封入され、その一端部は発光管支持
板２を介してステム線３に熔接され、一方の主電
極４が他方のステム線３′に電気的に接続されて
いる。主電極４に隣接した始動補助極５が始動抵
抗６を介してステム線３に接続され、始動補助極
５には、ランプが点灯中、隣接した主電極４と同
電位になるようにバイメタルスイツチ７が配置さ
れている。次に他方の主電極８はリード線９を介
してステム線３に接続され、さらに点灯中下側と
なる側の電極封止部１０には円形の透光性熱遮蔽
板たとえばマイカ板１１が支持具１２によつて配
設されている。 In FIG. 1, a halide such as sodium, thallium, indium, scandium, etc. is sealed inside an arc tube 1, one end of which is welded to a stem wire 3 via an arc tube support plate 2, and one main electrode 4 is electrically connected to the other stem wire 3'. A starting auxiliary pole 5 adjacent to the main electrode 4 is connected to the stem wire 3 via a starting resistor 6, and a bimetal switch is connected to the starting auxiliary pole 5 so that the potential is the same as that of the adjacent main electrode 4 while the lamp is lit. 7 is placed. Next, the other main electrode 8 is connected to the stem wire 3 via a lead wire 9, and a circular translucent heat shielding plate, such as a mica plate 11, is attached to the lower electrode sealing part 10 during lighting. It is arranged by a support 12.
上記発光管１は外管１３に内蔵されており、こ
の外管１３内には不活性ガスが封入されている。 The arc tube 1 is housed in an outer tube 13, and the outer tube 13 is filled with an inert gas.
上記構造のメタルハライドランプを口金１４側
が上側となるように垂直点灯すると、外管１３の
ネツク部付近の温度は他部のそれよりも低いの
で、外管１３内に封入された不活性ガスの対流に
より発光管１の電極後方部の最冷点個所が冷却さ
れようとするが、電極封止部１０に設けられた熱
遮蔽板１１によつてこれが阻止されて、上記最冷
点個所の保温が行なわれ、また熱遮蔽板１１の赤
外線反射によつても上記最冷点個所の保温が行な
われることとなる。 When the metal halide lamp having the above structure is lit vertically with the base 14 facing upward, the temperature near the neck of the outer bulb 13 is lower than that in other parts, so the convection of the inert gas sealed in the outer bulb 13 This attempts to cool down the coldest spot at the rear of the electrode of the arc tube 1, but this is prevented by the heat shield plate 11 provided in the electrode sealing part 10, and the coldest spot is kept warm. In addition, the coldest spot is kept warm by reflection of infrared rays from the heat shielding plate 11.
実験によれば、第１図に示された構造におい
て、発光管１の両端部にアクアダツグ保温膜を設
け、点灯中下側となる発光管の電極封止部に設け
る透光性熱遮蔽板としてマイカ板を用い、電極間
距離が15〜17mmである、発光管内にナトリウム、
タリウム、インジウムのハロゲン化物を封入した
100ワツトメタルハライドランプを点灯試験した
ところ、第２図に曲線Ａとして示すように、電極
後方部の最冷点温度は560℃、外管頂部の最高温
度は770℃で、両者間には170℃の温度差があり、
効率は71ｍ／Ｗで、色温度は5000〜5800Kとな
り光色むらが改善された。 According to experiments, in the structure shown in Fig. 1, Aqua Datugu heat-retaining films were provided at both ends of the arc tube 1, and used as a translucent heat shielding plate provided at the electrode sealing part of the arc tube, which is the lower side during lighting. A mica plate is used, and the distance between the electrodes is 15 to 17 mm. Sodium is placed inside the arc tube.
Filled with thallium and indium halides
When a 100 Watt metal halide lamp was tested for lighting, as shown by curve A in Figure 2, the coldest point temperature at the rear of the electrode was 560°C, the maximum temperature at the top of the outer tube was 770°C, and the temperature between the two was 170°C. There is a temperature difference of
The efficiency was 71m/W, and the color temperature was 5000-5800K, improving color unevenness.
また、電極封止部の両方にマイカ板を取付け、
他を上記のものと同一条件とした100ワツトメタ
ルハライドランプを点灯試験したところ、同図に
曲線Ｂとして示すように、最冷点温度は655℃と
上記のものと余り変らなかつたが、最高温度が
800℃に上昇し効率は72ｍ／Ｗとなり、また色
温度は4900〜5700Kとなり上記のものと余り変ら
なかつた。 In addition, mica plates are attached to both electrode sealing parts,
When a 100 watt metal halide lamp was lit under the same conditions as above, the coldest point temperature was 655℃, which was not much different from the above, as shown by curve B in the figure, but the maximum temperature but
The temperature rose to 800°C, the efficiency was 72m/W, and the color temperature was 4900-5700K, not much different from the above.
これに対し、電極封止部にマイカ板を設けず、
他を上記のものと同一条件にした従来の100ワツ
トメタルハライドランプを点灯試験したところ、
同図に曲線Ｃとして示すように、最冷点温度は
550℃、最高温度は760℃で、両者間には210℃も
の温度差が生じ、効率は65ｍ／Ｗで色温度は
5000〜6500Kとばらつき、光色むらを生じた。 In contrast, without providing a mica plate in the electrode sealing part,
A lighting test was conducted using a conventional 100 Watt metal halide lamp under the same conditions as above.
As shown as curve C in the figure, the coldest point temperature is
550℃, the maximum temperature is 760℃, there is a temperature difference of 210℃ between the two, the efficiency is 65m/W, and the color temperature is
It varied between 5000 and 6500K, causing uneven light color.
また、本発明のメタルハライドランプによれ
ば、上記実施例のごとく最冷点温度が約650℃と
なり、このとき管壁負荷は約20W／cm2であつたの
に対し、従来のものでは最冷点温度を約650℃と
するためには発光管を小形にして管壁負荷を24〜
26W／cm2に上昇させなければならず、その結果発
光管失透により短寿命となつていた。 Furthermore, according to the metal halide lamp of the present invention, the coldest point temperature was approximately 650°C as in the above embodiment, and the tube wall load at this time was approximately 20 W/ cm2 , whereas in the conventional lamp, the coldest point temperature was approximately 650°C. In order to make the point temperature about 650℃, the arc tube should be made smaller and the tube wall load should be 24~24℃.
The power had to be increased to 26 W/cm 2 , and as a result, the life of the arc tube was shortened due to devitrification of the arc tube.
なお、熱遮蔽板として、マイカ板のかわりに耐
熱ガラス板を用いても上記と同様の結果が得られ
た。 Note that the same results as above were obtained even when a heat-resistant glass plate was used instead of the mica plate as the heat shield plate.
なおまた、透光性熱遮蔽板のかわりに、アルミ
ニウムからなる金属板を用いた場合は、色むらは
改善されたものの、発光管からの放射光が一部遮
断されて効率が66ｍ／Ｗと低下した。 Furthermore, when a metal plate made of aluminum was used instead of a translucent heat shield plate, although color unevenness was improved, some of the light emitted from the arc tube was blocked, resulting in an efficiency of 66 m/W. decreased.
また、反射形水銀ランプで見られるように、反
射形外管の頂部の熱を下げる目的で採用されてい
るように、発光管から離れた位置に熱遮蔽板を配
置した場合は、効率や光色むらの改善にはならな
かつた。 In addition, if a heat shield plate is placed away from the arc tube, as seen in reflective mercury lamps, which is used to reduce the heat at the top of the reflective outer tube, efficiency and light It did not improve the uneven color.
以上説明したように本発明は、発光管の少なく
とも点灯中下側となる電極封止部に透光性熱遮蔽
板を配置したために、放射光を遮蔽することな
く、外管内の保護ガスの対流による発光管の冷却
作用を防止して、発光管の最冷点温度を上昇せし
め、管壁負荷を上げることなく効率を高め、かつ
光色むらを改善したメタルハライドランプを提供
することができる。 As explained above, the present invention has a light-transmitting heat shielding plate disposed at the electrode sealing part which is on the lower side of the arc tube at least during lighting. It is possible to provide a metal halide lamp that prevents the cooling effect of the arc tube by increasing the temperature of the coldest point of the arc tube, increases efficiency without increasing the load on the tube wall, and improves light color unevenness.
第１図は本発明の一実施例であるメタルハライ
ドランプの正面図、第２図は発光管の管壁温度分
布特性図である。
１……発光管、４，８……主電極、１０……電
極封止部、１１……マイカ板。
FIG. 1 is a front view of a metal halide lamp which is an embodiment of the present invention, and FIG. 2 is a characteristic diagram of temperature distribution on the wall of an arc tube. DESCRIPTION OF SYMBOLS 1... Arc tube, 4, 8... Main electrode, 10... Electrode sealing part, 11... Mica plate.
Claims (1)
が封入され、かつ前記両端部に保温膜が設けられ
た発光管と、前記発光管を内蔵する外管とを有
し、前記発光管の少なくとも点灯中下側となる電
極封止部に透光性熱遮蔽板を配設したことを特徴
とする100ワツト以下のメタルハライドランプ。1 A light emitting tube having a pair of electrodes at both ends, a luminescent substance sealed inside, and a heat insulating film provided at both ends, and an outer tube housing the light emitting tube, A metal halide lamp of 100 watts or less, characterized in that a translucent heat shielding plate is provided at least at the lower electrode sealing part during lighting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4494479A JPS55136456A (en) | 1979-04-12 | 1979-04-12 | Metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4494479A JPS55136456A (en) | 1979-04-12 | 1979-04-12 | Metal halide lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55136456A JPS55136456A (en) | 1980-10-24 |
| JPS6130378B2 true JPS6130378B2 (en) | 1986-07-12 |
Family
ID=12705586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4494479A Granted JPS55136456A (en) | 1979-04-12 | 1979-04-12 | Metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55136456A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58115749A (en) * | 1981-12-26 | 1983-07-09 | Toshiba Corp | Small-sized metal halide lamp |
| DE3368810D1 (en) * | 1982-02-10 | 1987-02-05 | Mitsubishi Electric Corp | Metal vapor discharge lamp |
| CN103900000B (en) * | 2012-12-28 | 2016-01-27 | 深圳市海洋王照明工程有限公司 | Metal halogen lamp lamps structure and Metal halogen lamp tool erecting device |
-
1979
- 1979-04-12 JP JP4494479A patent/JPS55136456A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55136456A (en) | 1980-10-24 |
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