JPS5875758A - Electric-discharge lamp - Google Patents

Electric-discharge lamp

Info

Publication number
JPS5875758A
JPS5875758A JP17521281A JP17521281A JPS5875758A JP S5875758 A JPS5875758 A JP S5875758A JP 17521281 A JP17521281 A JP 17521281A JP 17521281 A JP17521281 A JP 17521281A JP S5875758 A JPS5875758 A JP S5875758A
Authority
JP
Japan
Prior art keywords
lamp
phosphor
discharge lamp
amount
efficiency
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
Application number
JP17521281A
Other languages
Japanese (ja)
Inventor
Haruo Yamazaki
治夫 山崎
Yoshiro Ogata
尾形 芳郎
Kazuo Murata
村田 一雄
Shuzo Akutsu
圷 秀三
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electronics Corp, Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electronics Corp
Priority to JP17521281A priority Critical patent/JPS5875758A/en
Publication of JPS5875758A publication Critical patent/JPS5875758A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/38Devices for influencing the colour or wavelength of the light
    • H01J61/42Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/44Devices characterised by the luminescent material

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To improve the efficiency of an electric-discharge lamp remarkably by adjusting the amount of a phosphor applied to the lamp to an optimum value. CONSTITUTION:A calcium halophosphate phosphor 9 is applied almost homogeneously over the inner wall of an outer encircling case 1 and the outer surface of an inner encircling case 2. The amount of the phosphor 9 with which the lamp efficiency of such an electric-discharge lamp becomes high is in the range of 1.3-4.0mg/cm<2>; the optimum range is 1.5-3.5mg/cm<2>. This is exceptionally small compared to the optimum range of the usual fluorescent lamp, which is 6-9mg/cm<2>. It means that the efficiency of above electric-discharge lamp is widely decreased if the same amount as that for the usual fluorescent lamp of the phosphor 9 is applied to above electric-discharge lamp. Therefore, the decreased amount of the applied phosphor 9 serves two ends, and gives a notably large significance by reducing the manufacturing cost as well as by increasing the lamp efficiency.

Description

【発明の詳細な説明】 本発明は放電ランプに関するものである。[Detailed description of the invention] The present invention relates to discharge lamps.

白熱電球は、使用が簡便であり、またコンノくクトな高
輝度ランプゆえにアクセント、照明などに適しており、
住宅や店舗などの一般照明用ランプとして広く用いられ
ている。しかしながら、省エネルギ一時代を迎えて、そ
の唯一の欠点といえる低効率が問題視されており、最近
では白熱電球代替用の高効率の小形放電ランプの開発が
要望されている。
Incandescent light bulbs are easy to use, and because they are compact and high-intensity lamps, they are suitable for accents and lighting.
Widely used as general lighting lamps in homes, stores, etc. However, as we enter an era of energy saving, their only drawback, low efficiency, has become a problem, and recently there has been a demand for the development of highly efficient compact discharge lamps to replace incandescent bulbs.

出願人は、そのような情況の下で、すでに特開昭52−
113684号公報などにおいて、白熱電球に代わるコ
ンパクトな放電ランプを提案した。
Under such circumstances, the applicant has already applied
In publications such as Publication No. 113684, a compact discharge lamp was proposed as an alternative to incandescent light bulbs.

第1図(a)、[有])は、すでに提案した放電ランプ
の構造を示す。この放電ランプは、外形の一部または全
部が球状または円筒状の曲面を形成している透光性ガラ
ス材料からなる容囲器外体1の内側に、同じ材料からな
る容囲器内体2が挿入されて両者が重ね合わされ、両者
の開口部3において相互に気密封着される。また、容囲
器内体2の曲面上には放電路を形成するところの溝4が
ひとつの連続した放電路を形成するように作られており
、その両端部には二つの電極6,6が支持導線7により
保持されており、さらに外部導線8に電気的に接合され
ている。容囲器外体1の内面および容囲器内体2の外面
には螢光体9が塗布されている。発光容囲器内部には、
排気管10を設けてこれを通して内部を排気し、ついで
余剰の水銀および希ガスを封入してhる。
FIG. 1(a) shows the structure of a discharge lamp that has already been proposed. This discharge lamp has a container outer body 1 made of a translucent glass material whose outer shape partially or entirely forms a spherical or cylindrical curved surface, and an inner container body 2 made of the same material. are inserted, the two are overlapped, and the openings 3 of both are hermetically sealed to each other. Further, a groove 4 for forming a discharge path is formed on the curved surface of the inner body 2 of the container so as to form one continuous discharge path, and two electrodes 6, 6 are provided at both ends of the groove 4. is held by a supporting conductor 7 and is further electrically connected to an external conductor 8. The inner surface of the container outer body 1 and the outer surface of the container inner body 2 are coated with a phosphor 9. Inside the luminous envelope,
An exhaust pipe 10 is provided and the inside is evacuated through this pipe, and then surplus mercury and rare gas are filled in for h.

さて、発明者らは、上記の基本構造にもとづく放電ラン
プの製品設計にあたシ、そのランプ効率が通常の螢光ラ
ンプに比べて低いこへがひとつの問題点であることを見
出した。つまり、当初の試作ランプのランプ効率は、通
常の螢光ランプに比べて放電路の全実効長があまシ短か
くならないのに、30〜4’OeI6低いレベルにすぎ
なかった。
Now, when designing a product for a discharge lamp based on the above basic structure, the inventors found that one problem was that the lamp efficiency was lower than that of a normal fluorescent lamp. In other words, the lamp efficiency of the original prototype lamp was only 30 to 4'OeI6 lower than that of a normal fluorescent lamp, even though the total effective length of the discharge path was not much shorter.

本発明の目的は、ランプ効率の高い放電ランプを提供す
ることにある。
An object of the present invention is to provide a discharge lamp with high lamp efficiency.

発明者らは、上記放電ランプのランプ効率を改善するた
めに詳細な検討を行った。当初、封入希ガスの種類およ
びその封入圧力゛、放電路の断面形ぼ− 状と放電電流密度などの種々のパラメータの効果につい
て調べたが、それらはいずれも著しいランプ効率の上昇
をもたらさなかった。、そして、発明者らは、この種の
放電ランプのランプ効率が螢光体の被着量に著しく左右
され、とくにその被着量を通常の螢光ランプのそれに比
べて少ないところの適量値に選定することによって、ラ
ンプ効率が著しく改善されることを見いだした。この現
象は、このような放電ランプの構成に起因するところの
固有な現象といえ、この応用によって高効率の放電ラン
プの実現に成功した。以下、本発明′を実施−〇にもと
づいて詳細に説明する。
The inventors conducted detailed studies to improve the lamp efficiency of the discharge lamp. Initially, we investigated the effects of various parameters such as the type of rare gas filled, its pressure, the cross-sectional shape of the discharge path, and the discharge current density, but none of them resulted in a significant increase in lamp efficiency. . , and the inventors have discovered that the lamp efficiency of this type of discharge lamp is significantly affected by the amount of phosphor deposited, and in particular, it has been found that the amount of phosphor deposited is set to an appropriate value, which is smaller than that of ordinary fluorescent lamps. It has been found that the lamp efficiency can be significantly improved by selecting the appropriate amount. This phenomenon can be said to be a unique phenomenon caused by the structure of such a discharge lamp, and by applying this phenomenon, a highly efficient discharge lamp was successfully realized. Hereinafter, the present invention' will be explained in detail based on the embodiment.

まず、第1図と同じ基本構造からなる放電ランプを用い
て実験した。白色粉末からなる蚕光体としてはハロシん
酸カルシウム螢光体・あるいは狭帯域発光形の螢光体(
ユーロピウム付活バリウム・マグネシウムアルミネイト
(青色発光)、テルビウム付活セリウムマグネシウムア
ルミネイト(緑色発光)およびユーロピウム付活イツト
リウムオキサイド(赤色発光)の混合螢光体)のいずれ
か、i、、:ヤ を用いた。希ガスとしてはアルゴン2,5Torrを封
入した。また、発光容囲器の寸法は次の通りである。
First, an experiment was conducted using a discharge lamp having the same basic structure as shown in FIG. Examples of phosphors made of white powder include calcium halosinate phosphors or narrow-band luminescent phosphors (
Mixed phosphor of europium-activated barium/magnesium aluminate (blue emission), terbium-activated cerium magnesium aluminate (green emission), and europium-activated yttrium oxide (red emission); was used. As a rare gas, 2.5 Torr of argon was sealed. Further, the dimensions of the light emitting envelope are as follows.

発光容囲器外径φ。  :  ・90 mm発光容囲器
長さL9:90IIl111両電極間距離Ld  : 
420閣 溝断面積Sd     二 400m 発明者らは、上記放電ランプに関して、そのランプ効率
と螢光体9Ω平均被着量(塗布した全量を全体の被着面
積で除した値)との関係を調べた。
Luminous envelope outer diameter φ. : ・90 mm Light emitting envelope length L9:90IIl111 Distance between both electrodes Ld:
420 Kagou cross-sectional area Sd 2 400 m The inventors investigated the relationship between the lamp efficiency and the average amount of 9Ω phosphor coating (the value obtained by dividing the total amount coated by the total coating area) of the discharge lamp. Ta.

この場合、螢光体は容囲器外体1の肉面と容囲器内体2
の外面全体にわたりほぼ均一になるように被着しである
。第2図に、710りん酸カルシウム螢光体を用いたと
きのランプ効率と平均被着量との関係を・示す。°こ7
れかも、かかる放電ランプのランプ効率が高くなる螢光
体被着量は1.3〜4.0苓−の範囲であることがわか
る。とくに、1.6〜3 、5fngAJが最適範囲と
いえる。これは通常の螢光ランプの適量範囲6〜911
MJ/cd  に比べて極めて少ない。つまり、通常の
螢光ランプと同じ被着量を被着すれば、上記放電ランプ
のランプ効率は大きく低下するといえる。螢光体被着量
の低下はランプ効率の上昇のみならず、それだけ製造コ
ストの低減をもたらすので一挙両得のきわめて大きい効
果を−与える。このように、上記放電ランプの螢光体被
着量の適量範囲が低くなる理由としては、容囲器外体の
外側に放射される発光束のうちで、例 溝4からいったん容囲器内体の内柵中空部に放射され、
相互反射されて容囲器外体の外部に放射される発光割合
の多いことがあげられる。そのような相互反射を経て外
部に放射される発光は、螢光体の被着量が少ない程増加
するといえる。通常の直管形あるいは環形の螢光ランプ
では、上記のような相互゛反射は考慮する必iがなく、
したがって被着量の適量範囲が多くなると考えられる。
In this case, the fluorescent material is the flesh surface of the container outer body 1 and the container inner body 2.
The coating is applied almost uniformly over the entire outer surface. FIG. 2 shows the relationship between lamp efficiency and average coverage when using 710 calcium phosphate phosphor. °ko7
However, it can be seen that the amount of phosphor coating that increases the lamp efficiency of such a discharge lamp is in the range of 1.3 to 4.0. In particular, 1.6 to 3.5fngAJ can be said to be the optimal range. This is the appropriate amount range of normal fluorescent lamps from 6 to 911.
It is extremely small compared to MJ/cd. In other words, it can be said that if the same amount of coating as in a normal fluorescent lamp is applied, the lamp efficiency of the discharge lamp will be significantly reduced. Reducing the amount of phosphor deposited not only increases lamp efficiency but also reduces manufacturing costs, which provides an extremely large win-win effect. As described above, the reason why the appropriate amount range of the phosphor coating amount of the discharge lamp is low is that among the luminous flux emitted to the outside of the outer body of the container, the amount of light emitted from the groove 4 once inside the container is radiates into the hollow part of the body,
One example of this is that a large proportion of the light emitted is mutually reflected and radiated to the outside of the envelope body. It can be said that the amount of light emitted to the outside through such mutual reflection increases as the amount of phosphor coating decreases. With ordinary straight tube or ring-shaped fluorescent lamps, there is no need to consider the above mutual reflection.
Therefore, it is thought that the range of suitable amount of coating increases.

ついで、第1図と同じ基本構造をもつが、螢光体を、弊
電路をなす溝に露呈する部分のみに被着し、溝と溝の間
隙部分には被着しない放電ランプに関して、上記と同様
の実験を行なったところ、上記と同様の螢光体被着量の
適量範囲が得られた。
Next, regarding a discharge lamp that has the same basic structure as in Fig. 1, but in which the phosphor is coated only on the part exposed to the grooves forming the electrical circuit, and not in the spaces between the grooves, we will explain the above. When a similar experiment was conducted, the same appropriate range of phosphor coating amount as above was obtained.

しかも、ランプ効率の最大値は、前記の螢光体を容囲器
外体の内面および容囲器内体2の外面全体に塗布したも
のに比べて約7〜8%高いレベルが得られた。
Furthermore, the maximum value of the lamp efficiency was approximately 7 to 8% higher than that obtained when the phosphor was applied to the inner surface of the outer container body and the entire outer surface of the inner container body 2. .

さらに、螢光体を容囲器外体の内面および容囲器内体2
の外面の全体に被着した前記放電ランプに関して、螢光
体被着量を容囲器外体と容囲器内体で変えたときのラン
プ効率を測定した。その結−果、両者のうち一方だけ上
記適量範囲まで減少させたときでも、ランプ効率の増加
が認められた。
Furthermore, the phosphor is attached to the inner surface of the outer container body and the inner surface of the container inner body 2.
Regarding the discharge lamp coated on the entire outer surface of the container, the lamp efficiency was measured when the amount of phosphor coating was changed between the outer and inner parts of the container. As a result, an increase in lamp efficiency was observed even when only one of the two was reduced to the above-mentioned appropriate range.

しかし、その効率の増加割合は両者とも適量範囲に塗布
したものに比べて約40〜60%にとどまった。・ 一方、螢光体としてハロりん酸カルシウムけい光体のか
わりに、前記混合螢光体を用して上記と同じ実験を繰り
かえしたところ、はぼ同じような結果が得られた。
However, the rate of increase in efficiency was only about 40 to 60% compared to when both were applied in an appropriate amount. - On the other hand, when the same experiment as above was repeated using the mixed phosphor described above instead of the calcium halophosphate phosphor, almost the same results were obtained.

以上説明したように、本発明は外形の一部または全部が
球面状または円筒状をなした容囲器外体と、前記容囲器
外体の内部に重ね合わされた容囲器内体とにより発光容
囲器臥□構成され、前記容囲器外体および前記容囲器内
体の少なくとも一方に放電路をなす溝が形成され、前記
容、囲器外体の内面および前記容囲器内体の外面の少な
くとも前記溝に露呈する部分に螢光体が被着され、さら
に前記溝の両端部に一対の電極が設けられ、前記螢光体
の平均被着量を1.3〜4.omy/cd の範囲に選
定   ′することによってランプ効率か通常の直管形
螢光ランプのそれにかなり近いレベルをもつ放電ランプ
を提供することができるものである。
As explained above, the present invention includes a container outer body whose outer shape is partially or completely spherical or cylindrical, and a container inner body superimposed on the inside of the container outer body. A light emitting envelope is configured such that a groove forming a discharge path is formed in at least one of the outer body and the inner body of the envelope, and the groove, the inner surface of the outer body of the envelope, and the inside of the vessel A phosphor is coated on at least a portion of the outer surface of the body exposed to the groove, and a pair of electrodes are provided at both ends of the groove, and the average amount of the phosphor coated is 1.3 to 4. By selecting a value in the range omy/cd, it is possible to provide a discharge lamp with a lamp efficiency fairly close to that of a conventional straight tube fluorescent lamp.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図(a)およびΦ)はそれぞれ従来の放電ランプの
一部切欠縦断面図および同図−のX−X線断面図、第2
図は放電ランプのけい光体塗布量とランプ効率との関係
を示す図である。 1・・・・・・容囲器外体、2・・・・・・\容囲器内
体、3・・・・・・開口部、4・・・・・・溝、6,6
・・・・・・電極、7・・・・・・支持導線、8・・・
・・・外部導線、9・・・・・・螢光体、1o・・・・
・・排気管。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
Figures 1(a) and Φ) are a partially cutaway vertical cross-sectional view of a conventional discharge lamp, a cross-sectional view taken along the line X--X in the same figure, and a second
The figure is a diagram showing the relationship between the amount of phosphor applied and the lamp efficiency of a discharge lamp. 1...Container outer body, 2...\Container inner body, 3...Opening, 4...Groove, 6, 6
...Electrode, 7...Support conductor, 8...
... External conductor, 9 ... Fluorescent material, 1o ...
··Exhaust pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

【特許請求の範囲】[Claims] 外形の一部または全部が球面状または円筒状を成され、
前記容囲器外体および前記容囲器内体の少なくとも一方
に放電路をなす溝が形成され、前記容囲器外体の内面お
よび前記容囲器内体の外面の少なくとも前記溝に露呈す
る部分に螢光体が被着され、さらに前記溝の両端部に一
対の電極が設けられた放電ランプにおいて、前記螢光体
の平均被着量を1.3〜4 、 omy/cdの範囲に
選定したことを特徴とする放電ランプ。
Part or all of the outer shape is spherical or cylindrical,
A groove forming a discharge path is formed in at least one of the container outer body and the container inner body, and is exposed to at least the groove on the inner surface of the container outer body and the outer surface of the container inner body. In a discharge lamp in which a phosphor is deposited on a portion thereof and a pair of electrodes are provided at both ends of the groove, the average amount of the phosphor deposited is in the range of 1.3 to 4 omy/cd. A discharge lamp characterized by the following.
JP17521281A 1981-10-30 1981-10-30 Electric-discharge lamp Pending JPS5875758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17521281A JPS5875758A (en) 1981-10-30 1981-10-30 Electric-discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17521281A JPS5875758A (en) 1981-10-30 1981-10-30 Electric-discharge lamp

Publications (1)

Publication Number Publication Date
JPS5875758A true JPS5875758A (en) 1983-05-07

Family

ID=15992249

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17521281A Pending JPS5875758A (en) 1981-10-30 1981-10-30 Electric-discharge lamp

Country Status (1)

Country Link
JP (1) JPS5875758A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006302547A (en) * 2005-04-18 2006-11-02 Osram-Melco Ltd Fluorescent lamp
JP2011049174A (en) * 2010-10-08 2011-03-10 Osram-Melco Ltd Lighting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006302547A (en) * 2005-04-18 2006-11-02 Osram-Melco Ltd Fluorescent lamp
JP2011049174A (en) * 2010-10-08 2011-03-10 Osram-Melco Ltd Lighting system

Similar Documents

Publication Publication Date Title
US4709184A (en) Low wattage metal halide lamp
JP3827417B2 (en) Fluorescent lamp having a reflective layer
US4095135A (en) Spherical-bulb fluorescent lamp
JPH1050259A (en) Low-pressure mercury vapor discharge lamp, and its manufacture
US20080284306A1 (en) Low-Pressure Mercury Vapor Discharge Lamp and Compact Fluorescent Lamp
JP5137391B2 (en) Dielectric barrier discharge lamp
JPS60207241A (en) Low voltage mercury vapor discharge lamp
JPS61185857A (en) Electrodeless discharge lamp
JP3528794B2 (en) Fluorescent lamp
JP2006500745A (en) Low pressure mercury vapor fluorescent lamp
JP3189285B2 (en) Electrodeless low pressure discharge lamp
JPS5875758A (en) Electric-discharge lamp
JPS6362865B2 (en)
WO2006080189A1 (en) Metal halide lamp and lighting unit utilizing the same
GB2071407A (en) Low-pressure discharge lamp
JP2004516622A (en) Color tone fluorescent lamp with reduced mercury
JP2004537824A (en) Color tone fluorescent lamp with reduced mercury
EP1323181B1 (en) Very high output low pressure discharge lamp
JP2002319373A (en) Electrodeless low-pressure discharge lamp having ultraviolet ray-reflecting layer
JPS5833661B2 (en) discharge lamp
JP2006196347A (en) Fluorescent lamp and lighting apparatus
JP2001035441A (en) Compact self-ballasted fluorescent lamp
JPH05225960A (en) Electrodeless low pressure rare gas type fluorescent lamp
JPH09199085A (en) Fluorescent lamp and lighting system using it
JP2003157804A (en) Ultraviolet emission type fluorescent lamp and lighting system