JPH07320687A - Metal halide lamp - Google Patents
Metal halide lampInfo
- Publication number
- JPH07320687A JPH07320687A JP11267194A JP11267194A JPH07320687A JP H07320687 A JPH07320687 A JP H07320687A JP 11267194 A JP11267194 A JP 11267194A JP 11267194 A JP11267194 A JP 11267194A JP H07320687 A JPH07320687 A JP H07320687A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- outer tube
- light emitting
- metal halide
- halide lamp
- 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.)
- Pending
Links
- 229910001507 metal halide Inorganic materials 0.000 title claims abstract description 18
- 150000005309 metal halides Chemical class 0.000 title claims abstract description 18
- 239000011521 glass Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052786 argon Inorganic materials 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052753 mercury Inorganic materials 0.000 abstract description 2
- 210000002105 tongue Anatomy 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000005182 tip of the tongue Anatomy 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はメタルハライドランプに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal halide lamp.
【０００２】[0002]
【従来の技術】メタルハライドランプは従来屋外照明分
野で使用されてきたが、近年店舗等の屋内照明分野で使
用される機会が増えてきている。屋内照明分野で使用さ
れるランプはコンパクトな形状で低ワットのものが使用
されている。一般に、メタルハライドランプでは低ワッ
トで小型のランプになるほど点灯中の発光管内の圧力が
高くなる。また、ランプ点灯中、発光管内に封入されて
いる金属と発光管の構成材料である石英とが反応するこ
とにより発光管の耐圧が低下する。この原因により発光
管が破損し、その破片により外管が破損し飛散して、周
囲の商品等に損傷を与えることがある。このような外管
破損を防止するために、外管内で発光管をガラス筒によ
って囲繞する方法が知られている（特開平２−２３０６
５５号公報）。このガラス筒は、弾性力を有する舌片を
周縁に複数個有する金属板によってその両端開口部が閉
塞されており、その舌片の先端部が、外管の内表面に当
接することによってガラス筒は外管内に固定されてい
る。また、メタルハライドランプでは、外管の内表面を
フッ酸処理等でフロスト加工することにより、発光管よ
り放射される光を拡散し、配光特性を向上させることが
行われている。また、外管の外表面には紫外線吸収特性
を有する金属酸化物被膜を形成し、ランプより放射され
る紫外線量を低減している。2. Description of the Related Art Metal halide lamps have been conventionally used in the field of outdoor lighting, but in recent years, the opportunities for use in the field of indoor lighting of stores and the like are increasing. Lamps used in the field of indoor lighting have a compact shape and a low wattage. Generally, in metal halide lamps, the smaller the wattage and the smaller the lamp, the higher the pressure inside the arc tube during lighting. Further, during lighting of the lamp, the metal sealed in the arc tube reacts with quartz which is a constituent material of the arc tube, so that the withstand voltage of the arc tube is lowered. Due to this cause, the arc tube may be damaged, and the fragments may damage and scatter the outer tube to damage the surrounding products. In order to prevent such damage to the outer tube, a method is known in which the arc tube is surrounded by a glass tube in the outer tube (Japanese Patent Laid-Open No. 2306/1990).
55 publication). This glass tube has its both end openings closed by a metal plate having a plurality of elastic tongues on its periphery, and the tip of the tongue is brought into contact with the inner surface of the outer tube. Is fixed in the outer tube. Further, in the metal halide lamp, the inner surface of the outer tube is frosted by a hydrofluoric acid treatment or the like to diffuse the light emitted from the arc tube and improve the light distribution characteristics. Further, a metal oxide film having an ultraviolet absorbing property is formed on the outer surface of the outer tube to reduce the amount of ultraviolet rays emitted from the lamp.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、弾性力
を有する舌片を周辺に複数個有する金属板によって、外
管内でガラス筒を固定するメタルハライドランプでは、
そのランプ製造時に舌片が外管内表面を擦るために、外
管内のフロスト加工した部分が傷つくという問題があっ
た。However, in the metal halide lamp in which the glass tube is fixed in the outer tube by the metal plate having a plurality of elastic tongues on the periphery,
Since the tongue piece rubs the inner surface of the outer tube at the time of manufacturing the lamp, there is a problem that the frosted portion in the outer tube is damaged.
【０００４】本発明は、このような問題を解決するため
になされたもので、ランプ製造時に外管内表面のフロス
ト加工部分を傷つけることなく、発光管から発生する光
を拡散して配光特性を向上させることのできるメタルハ
ライドランプを提供することを目的とするものである。The present invention has been made in order to solve such a problem, and diffuses the light generated from the arc tube without damaging the frosted portion of the inner surface of the outer tube during the manufacture of the lamp, thereby improving the light distribution characteristics. It is an object of the present invention to provide a metal halide lamp that can be improved.
【０００５】[0005]
【課題を解決するための手段】本発明のメタルハライド
ランプは、発光管と、前記発光管を囲繞したガラス筒
と、前記発光管および前記ガラス筒を内蔵した外管とを
具備し、前記外管の外表面にフロスト膜が形成されてい
る。A metal halide lamp according to the present invention comprises an arc tube, a glass tube surrounding the arc tube, and an outer tube containing the arc tube and the glass tube. Has a frosted film formed on its outer surface.
【０００６】[0006]
【作用】この構成により、外管内表面のフロスト加工部
分を傷つけることがなくなる。そして、ガラス筒の外表
面をフロスト加工していることにより、発光管から発生
した光が拡散される。With this structure, the frosted portion on the inner surface of the outer tube is not damaged. The light generated from the arc tube is diffused by frosting the outer surface of the glass tube.
【０００７】[0007]
【実施例】図１は本発明の一実施例である７０Ｗメタル
ハライドランプを示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a 70 W metal halide lamp which is an embodiment of the present invention.
【０００８】図１において、内径９ｍｍの石英製発光管
１は両端に電極（図示せず）を有し、内部に始動用ガス
として２００トールのアルゴンと１３ｍｇの水銀の他
に、ＮａＩ １．１ｍｇ，ＴｌＩ ０．３ｍｇ，ＴｍＩ3
０．７ｍｇ，ＤｙＩ3 ０．７ｍｇ，ＨｏＩ3 ０．７ｍｇ
の金属ハロゲン化物が封入されている。発光管１はその
周囲を円筒状の石英ガラス筒３，４で２重に囲繞されて
いる。円盤状金属板５は、その周縁に３カ所において弾
性力を有する舌片５ａを備えている。金属板５はガラス
筒３，４の両端開口部を閉塞している。ガラス筒３，４
および発光管１は、金属板５の舌片５ａが硬質ガラス製
の外管２の内表面に当接することによって外管２内に固
定されている。外管２の外表面にはフロスト膜６が塗布
され形成されている。外管２の端部には口金７が固着さ
れている。フロスト膜６は、シリカ（ＳｉＯ2）の微粒
子を有機溶剤に分散させた溶液を用いてディップ法によ
り外管外表面に塗布し、４００℃での加熱焼成により白
色不透明の硬質膜を形成している。フロスト膜厚は、薄
いと光拡散効果が弱く、厚くなりすぎると膜剥離が生じ
るため１μｍ〜１０μｍが望ましい。In FIG. 1, a quartz arc tube 1 having an inner diameter of 9 mm has electrodes (not shown) at both ends, and 200 Torr of argon as a starting gas and 13 mg of mercury are used therein, as well as 1.1 mg of NaI. , TlI 0.3 mg, TmI 3
0.7 mg, DyI 3 0.7 mg, HoI 3 0.7 mg
The metal halide of is encapsulated. The arc tube 1 is doubly surrounded by cylindrical quartz glass tubes 3 and 4. The disk-shaped metal plate 5 is provided with tongues 5a having elastic force at three locations on its peripheral edge. The metal plate 5 closes the openings at both ends of the glass tubes 3 and 4. Glass tube 3,4
The arc tube 1 is fixed in the outer tube 2 by the tongue piece 5a of the metal plate 5 contacting the inner surface of the outer tube 2 made of hard glass. A frost film 6 is applied and formed on the outer surface of the outer tube 2. A base 7 is fixed to the end of the outer tube 2. The frost film 6 is formed by applying a solution in which fine particles of silica (SiO 2 ) are dispersed in an organic solvent to the outer surface of the outer tube by a dipping method, and forming a white opaque hard film by heating and baking at 400 ° C. There is. If the frost film thickness is thin, the light diffusion effect is weak, and if it is too thick, film peeling occurs, so 1 μm to 10 μm is desirable.
【０００９】図２は口金上向きで垂直点灯したときのラ
ンプ配光を示す図であり、曲線Ａは外管外表面にフロス
ト膜を形成した本発明ランプの配光特性を示し、曲線Ｂ
は外管にフロスト膜を形成していない従来ランプの配光
特性を示す。図２から明らかなように、本実施例のメタ
ルハライドランプは外管外表面にフロスト膜を形成して
いるため、発光管から発生した光が拡散され、なめらか
で均一な配光特性を得ることができる。また、シリカの
微粒子の他に酸化亜鉛（ＺｎＯ）の微粒子を有機溶剤中
に分散させフロスト膜を形成することにより、紫外線吸
収特性を持つフロスト膜を得ることが確認できた。この
場合、金属酸化物の含有量が少ないと紫外線吸収特性が
弱く、多すぎると膜剥離が生じるため、重量比で２％〜
１０％が望ましい。FIG. 2 is a diagram showing the light distribution of the lamp when the lamp is vertically lit with the base facing upward. Curve A shows the light distribution characteristic of the lamp of the present invention in which a frost film is formed on the outer surface of the outer bulb, and curve B.
Shows the light distribution characteristics of a conventional lamp having no frost film formed on the outer tube. As is clear from FIG. 2, since the metal halide lamp of the present embodiment has the frost film formed on the outer surface of the outer bulb, the light emitted from the arc tube is diffused and a smooth and uniform light distribution characteristic can be obtained. it can. It was also confirmed that a frost film having an ultraviolet absorbing property was obtained by dispersing zinc oxide (ZnO) particles in an organic solvent in addition to silica particles to form a frost film. In this case, when the content of the metal oxide is small, the ultraviolet absorption property is weak, and when the content is too large, film peeling occurs.
10% is desirable.
【００１０】なお、上記実施例ではシリカ（ＳｉＯ2）
の微粒子を溶剤に分散させた場合について説明したが、
他の材料、例えばアルミナ（Ａｌ2Ｏ3）の微粒子を溶剤
に分散させたものを用いても同等の効果が得られる。ま
た、フロスト膜形成の方法は、ディップ法の他に、スプ
レー等の方法によっても同等の効果が得られる。In the above embodiment, silica (SiO 2 )
Although the case where the fine particles of are dispersed in a solvent has been described,
The same effect can be obtained by using another material, for example, one in which fine particles of alumina (Al 2 O 3 ) are dispersed in a solvent. Further, as the method of forming the frost film, the same effect can be obtained by a method such as spraying in addition to the dipping method.
【００１１】また、上記実施例では紫外線吸収特性を持
つ金属酸化物に酸化亜鉛を用いた場合について説明した
が、他の材料、例えば酸化チタン（ＴｉＯ2）を用いて
も同等の効果が得られる。In the above embodiment, the case where zinc oxide is used as the metal oxide having the ultraviolet absorbing property has been described, but the same effect can be obtained by using other materials such as titanium oxide (TiO 2 ). .
【００１２】[0012]
【発明の効果】以上説明したように、本発明のメタルハ
ライドランプは、外管の外表面にフロスト膜を形成して
いるため、ランプ製造時にガラス筒を固定している金属
板の舌片で外管内表面のフロスト加工部分を傷つけるこ
とがなく、発光管から放射される光を拡散させ、配光特
性を向上することができる。さらに、フロスト膜に紫外
線吸収特性を持つ金属酸化物を含有することにより、ラ
ンプから放射される紫外線量を低減できるものである。As described above, in the metal halide lamp of the present invention, since the frost film is formed on the outer surface of the outer tube, the metal halide tongue piece that fixes the glass tube to the outer surface of the outer tube forms the outer surface. It is possible to diffuse the light emitted from the arc tube and improve the light distribution characteristics without damaging the frosted portion of the inner surface of the tube. Furthermore, by containing a metal oxide having an ultraviolet absorbing property in the frost film, the amount of ultraviolet rays emitted from the lamp can be reduced.
【図１】本発明の一実施例であるメタルハライドランプ
の一部切欠正面図FIG. 1 is a partially cutaway front view of a metal halide lamp according to an embodiment of the present invention.
【図２】同じく配光特性を示す特性図FIG. 2 is a characteristic diagram showing a light distribution characteristic.
１ 発光管 ２ 外管 ３，４ ガラス筒 ５ 金属板 ５ａ 舌片 ６ フロスト膜 ７ 口金 1 arc tube 2 outer tube 3,4 glass tube 5 metal plate 5a tongue piece 6 frost film 7 base
Claims (2)
筒と、前記ガラス筒の両端開口部を閉塞した周縁に弾性
力を有する複数個の舌片を設けた金属板と、前記発光管
および前記ガラス筒を内蔵した外管とを具備し、前記金
属板の舌片が前記外管の内表面に当接することにより前
記発光管とガラス筒とが前記外管内に固定され、前記外
管の外表面にフロスト膜が形成されていることを特徴と
するメタルハライドランプ。1. A light emitting tube, a glass tube surrounding the light emitting tube, a metal plate provided with a plurality of tongue pieces having elastic force at a peripheral edge closing both end openings of the glass tube, and the light emitting tube. And an outer tube containing the glass tube, wherein the arc tube and the glass tube are fixed in the outer tube by contact of the tongue piece of the metal plate with the inner surface of the outer tube. A metal halide lamp having a frosted film formed on the outer surface of the metal halide lamp.
有する金属酸化物が含有されていることを特徴とする請
求項１記載のメタルハライドランプ。2. The metal halide lamp according to claim 1, wherein the frost film contains a metal oxide having an ultraviolet absorbing property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11267194A JPH07320687A (en) | 1994-05-26 | 1994-05-26 | Metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11267194A JPH07320687A (en) | 1994-05-26 | 1994-05-26 | Metal halide lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07320687A true JPH07320687A (en) | 1995-12-08 |
Family
ID=14592572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11267194A Pending JPH07320687A (en) | 1994-05-26 | 1994-05-26 | Metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07320687A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008084660A (en) * | 2006-09-27 | 2008-04-10 | Dialight Japan Co Ltd | Field emission lamp |
| EP2190000A1 (en) | 2008-11-21 | 2010-05-26 | Toshiba Lighting & Technology Corporation | Coating liquid for diffusing film of high-pressure discharge lamp and high-pressure discharge lamp |
-
1994
- 1994-05-26 JP JP11267194A patent/JPH07320687A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008084660A (en) * | 2006-09-27 | 2008-04-10 | Dialight Japan Co Ltd | Field emission lamp |
| EP2190000A1 (en) | 2008-11-21 | 2010-05-26 | Toshiba Lighting & Technology Corporation | Coating liquid for diffusing film of high-pressure discharge lamp and high-pressure discharge lamp |
| JP2010123542A (en) * | 2008-11-21 | 2010-06-03 | Toshiba Lighting & Technology Corp | Liquid agent for coating diffusion film of high-pressure discharge lamp and high-pressure discharge lamp |
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