JPH0545889U - Fluorescent lamp - Google Patents
Fluorescent lampInfo
- Publication number
- JPH0545889U JPH0545889U JP9391691U JP9391691U JPH0545889U JP H0545889 U JPH0545889 U JP H0545889U JP 9391691 U JP9391691 U JP 9391691U JP 9391691 U JP9391691 U JP 9391691U JP H0545889 U JPH0545889 U JP H0545889U
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent lamp
- opening surface
- stem
- bulb
- exhaust port
- 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
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
(57)【要約】
【目的】 アパーチャー形または反射形蛍光ランプの経
時的配光分布の変化を少なくする。
【構成】 管形バルブ内面に長手方向に沿った開口面３
を有する反射膜２を設けこの反射膜上に蛍光体層４を形
成し、バルブ端部に、排気口７が前記開口面とほぼ同一
方向に指向するように、ステム５を配設する。
(57) [Summary] [Purpose] To reduce changes in the light distribution over time of aperture-type or reflection-type fluorescent lamps. [Structure] Opening surface 3 along the longitudinal direction on the inner surface of the tubular valve
The phosphor layer 4 is formed on the reflective film 2, and the stem 5 is arranged at the bulb end so that the exhaust port 7 is oriented in substantially the same direction as the opening surface.
Description
【０００１】[0001]
本考案は、アパーチャー形又は、反射形蛍光ランプの改良に関する。 The present invention relates to an improved aperture type or reflection type fluorescent lamp.
【０００２】[0002]
複写機用などの光源としては小形で所定方向に光量が多く配光分布が均一であ ることが必要である。このために用いられる蛍光ランプには所定方向に光量を向 上させ配光分布が均一になるように上記ランプの長手方向に沿ってバルブ内面に スリット状の開口面を設けたいわゆるアパーチャー形蛍光ランプ、あるいは上記 開口面上にも蛍光体層を形成した反射形蛍光ランプがある。図５は、この種蛍光 ランプの代表例である実公昭６３−４３８０１号公報に開示されたものを示して いる。 As a light source for a copying machine, it is necessary to be small and have a large amount of light in a predetermined direction and a uniform light distribution. The fluorescent lamp used for this purpose is a so-called aperture type fluorescent lamp in which a slit-shaped opening surface is provided on the inner surface of the bulb along the longitudinal direction of the lamp so that the light quantity is improved in a predetermined direction and the light distribution is uniform. Alternatively, there is a reflection type fluorescent lamp in which a phosphor layer is formed on the opening surface. FIG. 5 shows a typical example of this kind of fluorescent lamp disclosed in Japanese Utility Model Publication No. 63-43801.
【０００３】 即ち、管形バルブ１の内面にその長手方向に沿って開口面３を有する反射膜２ 、および少なくともこの反射膜２上に蛍光体層４を形成し、このバルブ１の端部 に、側面に排気口７を有するステム５を配設してなる蛍光ランプにおいて、上記 ステム５に形成された排気口７を上記開口面３とほぼ反対方向に指向するように 上記ステム５を配設したものである。That is, a reflective film 2 having an opening 3 along the longitudinal direction is formed on the inner surface of the tubular bulb 1, and a phosphor layer 4 is formed on at least this reflective film 2, and an end portion of the bulb 1 is formed. In a fluorescent lamp in which a stem 5 having an exhaust port 7 on its side surface is provided, the stem 5 is provided so that the exhaust port 7 formed on the stem 5 is directed in a direction substantially opposite to the opening surface 3. It was done.
【０００４】 この蛍光ランプはステムに形成された排気口をバルブの開口面とほぼ反対方向 に位置させ、この排気口から水銀を封入する際生成される不純物１０を上記開口 面とほぼ反対方向のバルブ内面に沈着させ得るので、不純物は上記開口面に付着 することがない。このため上記開口面を通過する光の損失を防止できる効果が期 待できる。In this fluorescent lamp, an exhaust port formed in a stem is located in a direction substantially opposite to an opening surface of a bulb, and impurities 10 generated when mercury is filled from the exhaust port are directed in a direction substantially opposite to the opening surface. Since it can be deposited on the inner surface of the valve, impurities do not adhere to the opening surface. Therefore, the effect of preventing the loss of light passing through the opening surface can be expected.
【０００５】[0005]
しかしながら、上記構成のランプにおいては、バルブ開口面における不純物の 汚れの抑制はランプ製造過程に生ずるものに対する効果であり、これをランプ配 光の面から見ると、ランプ完成時の配光分布は改善されるものの、点灯時間とと もに配光分布の変化が著しくなるという問題点があった。 However, in the case of the lamp with the above structure, the control of contamination of impurities on the bulb opening surface is an effect against the ones that occur during the lamp manufacturing process. However, there is a problem that the distribution of light changes significantly with the lighting time.
【０００６】 図４にこの種の公知の蛍光ランプの配光分布を横軸にランプ管端からランプ中 央部に向かっての距離をとり、縦軸に相対輝度をとって示す。図４において実線 は点灯時間が０時間におけるものを示し、破線は点灯時間が１０００時間経った ものを示す。FIG. 4 shows the light distribution of a known fluorescent lamp of this type, with the horizontal axis representing the distance from the lamp tube end to the center of the lamp and the vertical axis representing the relative brightness. In FIG. 4, the solid line indicates that the lighting time is 0 hour, and the broken line indicates that the lighting time is 1000 hours.
【０００７】 本考案は、上記事情に鑑みなされたもので、点灯時間が経過しても配光分布の 変化が少ない蛍光ランプを提供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fluorescent lamp in which the change in the light distribution is small even after the lighting time has elapsed.
【０００８】[0008]
管形バルブ内面にその長手方向に沿って開口面を有した反射膜を設けるととも にこの反射膜上に蛍光体層を形成し、かつこのバルブの端部に、排気口が上記開 口面とほぼ同一方向に指向するようにステムを配設したものである。 The inner surface of the tubular bulb is provided with a reflective film having an opening along the longitudinal direction, a phosphor layer is formed on the reflective film, and the exhaust port is provided at the end of the valve with the above-mentioned opening surface. The stem is arranged so as to be directed in substantially the same direction as.
【０００９】[0009]
本考案の蛍光ランプにあっては、ステムに形成された排気口を管形バルブの開 口面とほぼ同一方向に指向させたので、水銀を封入する際に生成される不純物は 上記排気口方向のバルブの開口面に沈着し、バルブの蛍光体面には付着しない。 そのため、酸化物を含んだ水銀が蛍光体層に浸透あるいは吸収されることを防ぎ 、蛍光体の発光効率の低下を抑制する。 In the fluorescent lamp of the present invention, the exhaust port formed in the stem is directed in the same direction as the opening surface of the tubular bulb, so that the impurities generated when mercury is sealed are directed in the direction of the exhaust port. It deposits on the opening surface of the bulb and does not adhere to the phosphor surface of the bulb. Therefore, mercury containing oxide is prevented from penetrating or being absorbed in the phosphor layer, and a decrease in luminous efficiency of the phosphor is suppressed.
【００１０】[0010]
本考案の一実施例を図面を参照にして説明する。図１および図２は蛍光ランプ の要部断面図であり、図において１は管形バルブ、２はこのバルブ１の内面に設 けた反射膜、３は上記バルブの長手方向に沿って延在するスリット状の開口面、 ４はこの開口面３を除く上記反射膜２上に形成された蛍光体層、５は上記バルブ １の端部に封入されたステムであり、このステム５には排気管６、リード線８， ８およびフィラメント９が設けられ、さらにこのステム５の側面には排気口７が 蛍光体層４を避けて開口面３に対向して形成されている。 An embodiment of the present invention will be described with reference to the drawings. 1 and 2 are cross-sectional views of a main part of a fluorescent lamp, in which 1 is a tubular bulb, 2 is a reflective film provided on the inner surface of the bulb, and 3 extends along the longitudinal direction of the bulb. A slit-shaped opening surface, 4 is a phosphor layer formed on the reflection film 2 excluding the opening surface 3, and 5 is a stem enclosed at the end of the bulb 1. The stem 5 has an exhaust pipe. 6, lead wires 8, 8 and a filament 9 are provided, and an exhaust port 7 is formed on the side surface of the stem 5 so as to face the opening surface 3 while avoiding the phosphor layer 4.
【００１１】 このように構成された蛍光ランプにあっては、ステム５に形成されている排気 口７を開口面３とほぼ同一方向に指向させているので、水銀を封入する際に、残 留している高温の不純ガスと反応して不純物１０であるたとえば酸化物などが生 成される。しかし、排気口７付近で水銀封入の際に生成された酸化物は開口面３ とほぼ同一方向のバルブ１内面に沈着し、上記蛍光体層面４には付着しない。こ のため蛍光体層４での発光効率の部分的劣化がなく、配光分布が変化しない蛍光 ランプを得ることができる。In the fluorescent lamp configured as described above, since the exhaust port 7 formed in the stem 5 is directed substantially in the same direction as the opening surface 3, when the mercury is sealed, the residual gas is left behind. The impurities 10 such as oxides are formed by the reaction with the high temperature impure gas. However, the oxide generated when mercury is sealed in the vicinity of the exhaust port 7 is deposited on the inner surface of the bulb 1 in substantially the same direction as the opening surface 3 and does not adhere to the phosphor layer surface 4. Therefore, there is no partial deterioration of the luminous efficiency in the phosphor layer 4, and a fluorescent lamp in which the light distribution is unchanged can be obtained.
【００１２】 本考案による蛍光ランプの配光分布は従来の図４に示すものに比して著しく改 善され、図３に示すような特性をとる。The light distribution of the fluorescent lamp according to the present invention is remarkably improved as compared with the conventional one shown in FIG. 4, and has a characteristic shown in FIG.
【００１３】[0013]
本考案は以上のようにステムに形成された排気口をバルブの開口面とほぼ同一 方向に指向させたので、この排気口から水銀を封入する際生成される不純物を蛍 光体層が形成されていない開口面とほぼ同一方向のバルブ内面に沈着させ得、不 純物が蛍光体層面に付着することを防ぐ。このため点灯時間が進むにつれて生じ る蛍光体層の部分的な劣化にともなう配光分布の乱れを抑制した蛍光ランプを提 供できる。 In the present invention, since the exhaust port formed in the stem is directed in the substantially same direction as the opening surface of the valve as described above, a phosphor layer is formed for impurities generated when mercury is sealed from the exhaust port. It can be deposited on the inner surface of the bulb in substantially the same direction as the open surface, preventing impurities from adhering to the phosphor layer surface. Therefore, it is possible to provide a fluorescent lamp that suppresses the disturbance of the light distribution due to the partial deterioration of the phosphor layer that occurs as the lighting time progresses.
【図１】本考案の蛍光ランプの要部横断面図である。FIG. 1 is a cross-sectional view of a main part of a fluorescent lamp of the present invention.
【図２】図１の蛍光ランプの要部の縦断面図である。FIG. 2 is a vertical sectional view of a main part of the fluorescent lamp of FIG.
【図３】本考案の蛍光ランプの相対輝度の経時変化を示
す線図である。FIG. 3 is a diagram showing a change with time in relative luminance of the fluorescent lamp of the present invention.
【図４】ステムの排気口をアパーチャー側と反対側に形
成した従来蛍光ランプの相対輝度の経時変化を示す線図
である。FIG. 4 is a diagram showing a change over time in relative luminance of a conventional fluorescent lamp in which an exhaust port of a stem is formed on a side opposite to an aperture side.
【図５】従来の蛍光ランプの端部の縦断面図である。FIG. 5 is a vertical cross-sectional view of an end portion of a conventional fluorescent lamp.
１ 管形バルブ、 ２ 反射膜、 ３ 開口面、 ４
蛍光体層、 ５ ステム、 ６ 排気管、 ７ 排気
口、 ８ リード線、 ９ フィラメント、 １０ 不
純物1 tube type bulb, 2 reflective film, 3 opening surface, 4
Phosphor layer, 5 stems, 6 exhaust pipes, 7 exhaust ports, 8 lead wires, 9 filaments, 10 impurities
Claims (1)
て開口面を有する反射膜、およびこの開口面を除いた反
射膜上に蛍光体層を形成し、このバルブの端部に、側面
に開口した排気口を有するステムを配設してなる蛍光ラ
ンプにおいて、上記ステムの排気口が上記開口面とほぼ
同じ方向に指向するよう上記ステムを配設したことを特
徴とする蛍光ランプ。1. A reflective film having an opening surface along the longitudinal direction on the inner surface of a tubular bulb, and a phosphor layer formed on the reflective film excluding the opening surface, and a side surface at the end of the bulb. A fluorescent lamp comprising a stem having an exhaust port opened to the front, wherein the stem is disposed such that the exhaust port of the stem is oriented in substantially the same direction as the opening surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9391691U JPH0545889U (en) | 1991-11-15 | 1991-11-15 | Fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9391691U JPH0545889U (en) | 1991-11-15 | 1991-11-15 | Fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0545889U true JPH0545889U (en) | 1993-06-18 |
Family
ID=14095790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9391691U Pending JPH0545889U (en) | 1991-11-15 | 1991-11-15 | Fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0545889U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5613361B2 (en) * | 1976-01-20 | 1981-03-27 |
-
1991
- 1991-11-15 JP JP9391691U patent/JPH0545889U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5613361B2 (en) * | 1976-01-20 | 1981-03-27 |
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