JPH0770303B2 - Discharge lamp - Google Patents
Discharge lampInfo
- Publication number
- JPH0770303B2 JPH0770303B2 JP6216586A JP6216586A JPH0770303B2 JP H0770303 B2 JPH0770303 B2 JP H0770303B2 JP 6216586 A JP6216586 A JP 6216586A JP 6216586 A JP6216586 A JP 6216586A JP H0770303 B2 JPH0770303 B2 JP H0770303B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- lamp
- connecting portion
- tubes
- discharge 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 - Lifetime
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は放電灯、特に小型な放電灯に関するものであ
る。Description: FIELD OF THE INVENTION The present invention relates to a discharge lamp, and more particularly to a small discharge lamp.
従来の技術 低圧水銀蒸気放電灯たとえば蛍光灯を小型化するために
種々の構造が提案され、一部実用化されている。その代
表的なものに、複数本の放電管をほぼ平行に配置し、放
電管が直列になるようすなわち放電管が連続した放電路
を形成するようその端部またはその近傍を連通結合する
とともに、これらの放電管の一方の端部側に口金を取付
けたものがある（特開昭55−133744号公報，特開昭58−
25061号公報，特開昭60−124345号公報など）。2. Description of the Related Art Various structures have been proposed and partially put into practical use in order to reduce the size of low-pressure mercury vapor discharge lamps such as fluorescent lamps. In a typical one, a plurality of discharge tubes are arranged substantially in parallel, and the ends or the vicinity thereof are communicatively coupled so that the discharge tubes are in series, that is, the discharge tubes form a continuous discharge path, Some of these discharge tubes have a base attached to one end side thereof (Japanese Patent Laid-Open Nos. 55-133744 and 58-58).
25061, JP-A-60-124345, etc.).
発明が解決しようとする問題点 この種の放電灯は小型である上に、放電管をＵ字状にし
たり、鞍形にしたりする場合に比べて、製造が容易で、
製造装置も小型でよいという利点を有する。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention This type of discharge lamp is small in size and easy to manufacture as compared with the case where the discharge tube is U-shaped or saddle-shaped.
The manufacturing apparatus also has the advantage of being compact.
対をなす放電管の端部近傍を局部的に加熱し、管内圧を
高めてその部分を膨出，開口，接合したタイプの放電灯
では、連結部が放電路中の狭隘部分となる。また、放電
管端部を加熱し、曲げ，接合するタイプの放電灯では、
連結部が放電路中に狭隘部分を作りやすい。このような
放電路中の狭隘部分は放電灯の点灯に好ましくない影響
を与えることがか考えられ、この種放電灯の特性につい
て検討した。その結果、放電管同士の連結部の開口面積
と放電管における放電路断面積（以下放電管断面積とい
う）が、始動に非常に大きな影響を及ぼすことが判明し
た。特に、ランプ電力の大きな放電灯ほど連結部の開口
面積が始動特性に大きな影響を及ぼすことが明らかとな
った。In a discharge lamp of the type in which the vicinity of the ends of a pair of discharge tubes is locally heated to increase the internal pressure of the tubes and bulge, open, and join the parts, the connecting part becomes a narrow part in the discharge path. In the case of a discharge lamp that heats, bends, and joins the end of the discharge tube,
It is easy for the connecting part to form a narrow part in the discharge path. It is considered that such a narrow portion in the discharge path may adversely affect the lighting of the discharge lamp, and the characteristics of this kind of discharge lamp were examined. As a result, it was found that the opening area of the connecting portion between the discharge tubes and the discharge passage cross-sectional area in the discharge tube (hereinafter referred to as the discharge tube cross-sectional area) have a very large influence on the starting. In particular, it has been clarified that the opening area of the connecting portion has a greater influence on the starting characteristics of a discharge lamp having a higher lamp power.
問題点を解決するための手段 本発明の電源電圧100V用の放電灯は、少なくとも１対の
放電管の隣接する一端部を連通結合して前記放電管を直
列に連結し、かつ前記放電管の他端部に口金が取付けら
れている放電灯であって、前記放電管の連結部開口面積
と前記放電管の断面積との比を0.04以上0.12以下とした
構成を有する 作用 このように、連結部の開口面積を放電管断面積の0.04倍
以上としているため、ランプ電圧が低く、始動を安定に
行うことができる。Means for Solving the Problems In a discharge lamp for a power supply voltage of 100 V according to the present invention, adjacent one ends of at least one pair of discharge tubes are communicatively coupled to connect the discharge tubes in series, and A discharge lamp having a base attached to the other end, which has a structure in which a ratio of an opening area of a connecting portion of the discharge tube to a cross-sectional area of the discharge tube is 0.04 or more and 0.12 or less. Since the opening area of the part is 0.04 times or more the cross-sectional area of the discharge tube, the lamp voltage is low and the starting can be performed stably.
実 施 例 以下、本発明の一実施例の100V用40蛍光灯について、図
面を用いて説明する。Example A 100V 40-fluorescent lamp according to an example of the present invention will be described below with reference to the drawings.
第１図はこの実施例の一部破断側面図、第２図はその連
結部の孔径とランプ電圧，ランプ電流との関係を示す図
である。FIG. 1 is a partially broken side view of this embodiment, and FIG. 2 is a diagram showing the relationship between the hole diameter of the connecting portion and the lamp voltage and lamp current.
第１図において、1,2は外径20mm,内径18mmのガラス製放
電管で、それぞれの一端に封着されいるステム部分に電
極（図示せず）がそれぞれ取付けられている。これら電
極は通常使用されている蛍光灯の電極と同様の構造のも
のである。In FIG. 1, reference numerals 1 and 2 are glass discharge tubes having an outer diameter of 20 mm and an inner diameter of 18 mm, and electrodes (not shown) are attached to stem portions sealed at one ends thereof. These electrodes have the same structure as the electrodes of a fluorescent lamp that is normally used.
３は連結部で、放電管1,2の先端部の近傍にて両者を連
通結合している。この連結部３による連通孔を通して放
電管1,2の電極間に放電路が形成されている。放電路長
すなわち電極間距離は726mmである。連結部３は形状が
円形の連通孔を有する。Reference numeral 3 denotes a connecting portion, which connects and connects the discharge tubes 1 and 2 in the vicinity of the tips thereof. A discharge path is formed between the electrodes of the discharge tubes 1 and 2 through the communication hole formed by the connecting portion 3. The discharge path length, that is, the distance between the electrodes is 726 mm. The connecting portion 3 has a communication hole having a circular shape.
４は耐熱性合成樹脂製の口金で、放電管1,2のステム側
端部に接着剤を用いるなどして取付けられている。Reference numeral 4 is a base made of heat-resistant synthetic resin, which is attached to the stem-side ends of the discharge tubes 1 and 2 by using an adhesive or the like.
５は蛍光体膜で、放電管1,2および連結部３の内壁面に
連続して形成されている。放電管1,2の管内には水銀と
稀ガスとが封入されている。A phosphor film 5 is formed continuously on the inner wall surfaces of the discharge tubes 1 and 2 and the connecting portion 3. The discharge tubes 1 and 2 are filled with mercury and a rare gas.
この構造の蛍光灯を40W用安定器に接続して、連結部３
による連通孔の径φを種々変えて、それがランプ電圧，
ランプ電流に及ぼす影響を調べたところ、第２図に示す
結果が得られた。Connect the fluorescent lamp of this structure to the 40W ballast,
By changing the diameter φ of the communication hole due to
When the effect on the lamp current was investigated, the results shown in FIG. 2 were obtained.
第２図から明らかなように、連結部３の孔径が小さいと
きには、ランプ電圧が非常に高く、100V商用電源でJIS
規格40W用安定器を用いて点灯することができない。連
結部３の孔径が大きくなるに従ってランプ電圧が低下
し、同時にランプ電流も増大する。As is clear from FIG. 2, when the hole diameter of the connecting portion 3 is small, the lamp voltage is extremely high, and the JIS voltage is 100V when the commercial power source is 100V.
It cannot be lit using the standard 40W ballast. The lamp voltage decreases as the hole diameter of the connecting portion 3 increases, and at the same time, the lamp current increases.
そして、連結部３の孔径が3.6mm以上のとき、その開口
面積と放電管断面積との比は、π・1.82/π・92＝3.24/
81＝0.04となるから、同比が0.04以上であるとき、ラン
プ電圧が100V商用電源を使用したときの点灯限界電圧で
ある108V以下となり、100V商用電源で確実に点灯するよ
うになる。特に、連結部３の孔径が4.2mm以上すなわち
前記面積比が0.05以上であるとき、始動電圧は104V以下
となり、始動の確実性が非常に高くなる。When the diameter of the connecting portion 3 is 3.6 mm or more, the ratio of the opening area to the discharge tube cross-sectional area is π · 1.8 2 / π · 9 2 = 3.24 /
Since 81 = 0.04, when the ratio is 0.04 or more, the lamp voltage becomes 108 V or less, which is the lighting limit voltage when a 100 V commercial power source is used, and the lamp can be reliably turned on by the 100 V commercial power source. In particular, when the hole diameter of the connecting portion 3 is 4.2 mm or more, that is, when the area ratio is 0.05 or more, the starting voltage becomes 104 V or less, and the reliability of the starting becomes very high.
さらに、孔径が約5mm以上すなわち前記面積比が0.08以
上になると、ランプ電圧，ランプ電流は一定となる。Further, when the hole diameter is about 5 mm or more, that is, when the area ratio is 0.08 or more, the lamp voltage and the lamp current become constant.
放電管の連結部開口面積と放電管の断面積との比と始動
特性灯の関係を調べるために、さらにガラス製放電管1,
2の内径が13.5mm、放電路長が290mm、定格電力13Wの蛍
光ランプ、ガラス製放電管1,2の内径が15.0mm、放電路
長が352mm、定格電力27Wの蛍光ランプ、ガラス製放電管
1,2の内径が17.6mm、放電路長が732mm、定格電力36Wの
蛍光ランプ等についても実験したところ、上記と同じ結
果が得られた。In order to investigate the relationship between the ratio of the opening area of the discharge tube connection area to the discharge tube cross-sectional area and the starting characteristic lamp, the glass discharge tube 1,
2 inner diameter 13.5 mm, discharge path length 290 mm, rated power 13 W fluorescent lamp, glass discharge tubes 1,2 inner diameter 15.0 mm, discharge path length 352 mm, rated power 27 W fluorescent lamp, glass discharge tube
Experiments were also conducted on a fluorescent lamp having an inner diameter of 1 and 2 of 17.6 mm, a discharge path length of 732 mm, and a rated power of 36 W, and the same results as above were obtained.
また、発明者は第１図に示す構造の蛍光灯について、放
電管の連結開口面積と放電管の断面積との比ａを第１表
に示すとおりに種々変えたものを各々100個作製し、そ
れぞれの不良率を調べた。その結果を同表に示す。Further, the inventor produced 100 fluorescent lamps each having a structure shown in FIG. 1 in which the ratio a of the connection opening area of the discharge tube to the cross-sectional area of the discharge tube was variously changed as shown in Table 1. , Each defective rate was investigated. The results are shown in the table.
第１表から明らかなように、放電管の連結部開口面積と
放電管の断面積との比ａが0.14および0.16の場合の不良
率は、それぞれ25/1000および125/1000であるのに対
し、同比ａが0.12以下の場合は、10/1000以下となり、
不良率がきわめて小さいことがわかる。 As is clear from Table 1, the defect rates are 25/1000 and 125/1000, respectively, when the ratio a of the opening area of the connecting portion of the discharge tube to the sectional area of the discharge tube is 0.14 and 0.16, respectively. When the ratio a is 0.12 or less, it becomes 10/1000 or less,
It can be seen that the defect rate is extremely small.
したがって、製造の歩留まり向上等の点から、同比ａは
0.12以下とすることが望ましい。Therefore, from the viewpoint of improving the manufacturing yield, etc., the ratio a is
It is desirable to set it to 0.12 or less.
上記実施例では放電管1,2として直管状のものを使用し
た場合について述べたが、この形状の放電管に限るもの
でなく、たとえば中央部分を外方向へ湾曲させた形状で
あっても、同等の効果を得ることができる。また、上記
実施例では１対の放電管を使用した場合について述べた
が、２対以上の放電管を使用した場合についても、本発
明が適用されることはいうまでもないことである。In the above embodiment, the case of using a straight tube as the discharge tubes 1 and 2 has been described, but the discharge tube is not limited to this shape, for example, even if the central portion is curved outward. The same effect can be obtained. Further, in the above embodiment, the case where one pair of discharge tubes is used has been described, but it goes without saying that the present invention is also applied to the case where two or more pairs of discharge tubes are used.
発明の効果 本発明の放電灯は、放電管の連結部の開口面積と前記放
電管の断面積との比を0.04以上0.12以下としているた
め、ランプ電圧が低く、始動が容易で、かつ製造の歩留
まり等が向上し量産に適し安価となる等の利点を有す
る。Effect of the Invention The discharge lamp of the present invention has a ratio of the opening area of the connecting portion of the discharge tube and the cross-sectional area of the discharge tube of 0.04 or more and 0.12 or less, so that the lamp voltage is low, the starting is easy, and the manufacturing is easy. It has advantages such as improved yield and suitable for mass production and low cost.
【図面の簡単な説明】 第１図は本発明にかかる放電灯の実施例の一部破断側面
図、第２図はその連結部の孔径とランプ電圧，ランプ電
流との関係を示す図である。 1,2……放電管、３……連結部、４……口金。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway side view of an embodiment of a discharge lamp according to the present invention, and FIG. 2 is a diagram showing a relationship between a hole diameter of a connecting portion and a lamp voltage and a lamp current. . 1,2 ...... Discharge tube, 3 ...... Connection part, 4 ...... Base.
Claims (1)
を連通結合して前記放電管を直列に連結し、かつ前記放
電管の他端部に口金が取付けられている放電灯であっ
て、前記放電管の連結部開口面積と前記放電管の断面積
との比が0.04以上0.12以下であることを特徴とする電源
電圧100V用の放電灯。1. A discharge lamp in which adjacent one ends of at least one pair of discharge tubes are communicatively coupled to connect the discharge tubes in series, and a cap is attached to the other end of the discharge tubes. A discharge lamp for a power supply voltage of 100 V, wherein a ratio of an opening area of a connecting portion of the discharge tube and a cross-sectional area of the discharge tube is 0.04 or more and 0.12 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6216586A JPH0770303B2 (en) | 1986-03-19 | 1986-03-19 | Discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6216586A JPH0770303B2 (en) | 1986-03-19 | 1986-03-19 | Discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62217551A JPS62217551A (en) | 1987-09-25 |
| JPH0770303B2 true JPH0770303B2 (en) | 1995-07-31 |
Family
ID=13192232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6216586A Expired - Lifetime JPH0770303B2 (en) | 1986-03-19 | 1986-03-19 | Discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0770303B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4934768A (en) * | 1988-06-27 | 1990-06-19 | Gte Products Corporation | Picture element lamp assembly for information display system |
| DE10306584A1 (en) * | 2003-02-17 | 2004-08-26 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Low-pressure discharge lamp |
-
1986
- 1986-03-19 JP JP6216586A patent/JPH0770303B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62217551A (en) | 1987-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |