JP4296477B2 - Fluorescent lamp base - Google Patents
Fluorescent lamp base Download PDFInfo
- Publication number
- JP4296477B2 JP4296477B2 JP2003076784A JP2003076784A JP4296477B2 JP 4296477 B2 JP4296477 B2 JP 4296477B2 JP 2003076784 A JP2003076784 A JP 2003076784A JP 2003076784 A JP2003076784 A JP 2003076784A JP 4296477 B2 JP4296477 B2 JP 4296477B2
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent lamp
- base
- insulating material
- distance
- thickness
- 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 - Fee Related
Links
- 239000011810 insulating material Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims 2
- 239000012774 insulation material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Images
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- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、管径φ２５．５ｍｍ以下の細径蛍光ランプにおいて口金の絶縁距離（沿面距離）不足を防止する為の蛍光ランプ用口金に関する。
【０００２】
【従来の技術】
一般的に直管形蛍光ランプ用口金は、アルミシェルをベークやファイバーなどの絶縁材によって挟み込んで、真鍮などから出来ている口金ピンをカシメによって絶縁材に固定したり、絶縁材に口金ピンをカシメによって固定し、その絶縁材をアルミシェルに挟んで固定したりして構成されている。
最近では高周波点灯専用蛍光ランプが開発され蛍光ランプの細径化が進んでいる。このように蛍光ランプの細径化が進むことで口金もよりコンパクトになって来ている。本来ならば安全のために、蛍光ランプの定格電圧が高くなるとそれに応じて電気用品安全法や日本工業規格（JIS規格）で定められている通りに絶縁距離（沿面距離）を長く取らなければならないのだが、高周波点灯専用蛍光ランプのように管径がφ２５．５ｍｍ以下の定格電圧の高い蛍光ランプになると、今まで一般的に使っていた口金の構造では絶縁距離（沿面距離）を確保することが構造的に非常に困難な状況にある。
【０００３】
【表１】
電気用品安全法およびＪＩＳ規格では絶縁距離（沿面距離）は表１のように定められている。
【０００５】
【発明が解決しようとする課題】
本発明は、この様な問題を解決するためになされたものであり、高周波点灯専用蛍光ランプなどの管径がφ２５．５ｍｍ以下の細径蛍光ランプで定格電圧が高い蛍光ランプにおいて、電気用品安全法およびＪＩＳ規格に定める絶縁距離（沿面距離）を十分確保することを目的とするものである。
【０００６】
【課題を解決するための手段】
上記目的を達成するためには、高周波点灯専用蛍光ランプなどの管径がφ２５．５ｍｍ以下の細径蛍光ランプで定格電圧が高い蛍光ランプにおいて、口金に使用する絶縁材の厚さを口金ピン近傍の厚さよりアルミシェルの近傍の一部、あるいは全部の絶縁材の厚さを厚くすることで達成される。
【０００７】
【発明の実施の形態】
本発明について、図１に示す実施例をもとに説明する。図１は直管形蛍光ランプに使用するＧ１３口金の断面図である。図において符号１はアルミからなるシェルである。このシェル１の上部には主に真鍮からなる口金ピン２がフェノール樹脂等からなる絶縁材３にカシメ４によって固定されている。この絶縁材３は口金ピン２近傍の絶縁材３厚さｔよりシェル１近傍の絶縁材３厚さＴを厚くすることにより、シェル１と口金ピン２との絶縁距離（沿面距離）を確保することを可能にしている。また、口金外面の絶縁材３はシェル１と口金ピン２との絶縁距離（沿面距離）を確保するために幅Ｗを１１．３ｍｍ以上とし、絶縁材３の両端はシェル１に切れ込んだ形状とする。
【０００８】
この様に構成されたφ２５．５ｍｍ用Ｇ１３口金と現在一般的に使用されているφ２５．５ｍｍ用Ｇ１３口金Ａ（図２）及びＧ１３口金Ｂ（図３）との絶縁距離（沿面距離）の比較を行った結果を表２に示す。
測定の結果、本発明品は現在一般的に使われているφ２５．５ｍｍ用Ｇ１３口金と比較して絶縁距離（沿面距離）を確保する上で有効であることが確認された。
【０００９】
本実施例では絶縁材３はフェノール樹脂を用いたが、絶縁材３の材質は絶縁性樹脂であれば何でもよい。
【００１０】
【表２】
表２に本実施例の物と従来品との絶縁距離（沿面距離）の比較を示す。
【００１２】
【発明の効果】
以上説明したように本発明は、口金ピン近傍の絶縁材の厚さより金属シェル近傍の絶縁材の厚さを厚くすることにより、蛍光ランプの細径化・高定格電圧による口金部分の絶縁距離（沿面距離）不足を防止することが出来る。
【図面の簡単な説明】
【図１】本発明の実施例を示す蛍光ランプ用口金の断面図。
【図２】従来一般的な蛍光ランプ用口金Ａの断面図。
【図３】従来一般的な蛍光ランプ用口金Ｂの断面図。
【符号の説明】
１…シェル
２…口金ピン
３…絶縁材
４…カシメ
ｔ…口金ピン近傍絶縁材厚さ
Ｔ…シェルと接する絶縁材厚さ
Ｗ…絶縁材幅。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fluorescent lamp base for preventing shortage of the insulating distance (creeping distance) of the base in a thin fluorescent lamp having a tube diameter of φ25.5 mm or less.
[0002]
[Prior art]
In general, a base for a straight tube fluorescent lamp has an aluminum shell sandwiched between insulating materials such as bake and fiber, and a base pin made of brass or the like is fixed to the insulating material by caulking, or the base pin is attached to the insulating material. It is configured by fixing by caulking and fixing the insulating material between aluminum shells.
Recently, fluorescent lamps dedicated to high-frequency lighting have been developed and the diameter of fluorescent lamps has been reduced. Thus, as the diameter of the fluorescent lamp is reduced, the base is becoming more compact. For safety reasons, if the rated voltage of the fluorescent lamp increases, the insulation distance (creeping distance) must be increased accordingly as specified by the Electrical Appliance and Material Safety Law and the Japanese Industrial Standard (JIS standard). However, when a fluorescent lamp with a high rated voltage with a tube diameter of φ25.5 mm or less, such as a fluorescent lamp dedicated for high-frequency lighting, the insulation structure (creeping distance) must be secured in the structure of the base generally used until now. There is a very difficult situation structurally.
[0003]
[Table 1]
Insulation distance (creeping distance) is defined as shown in Table 1 in the Electrical Appliance and Material Safety Law and JIS standards.
[0005]
[Problems to be solved by the invention]
The present invention has been made to solve such a problem. In a fluorescent lamp having a high rated voltage, such as a fluorescent lamp having a tube diameter of φ25.5 mm or less, such as a fluorescent lamp dedicated for high-frequency lighting, the safety of electrical equipment is provided. The purpose is to ensure a sufficient insulation distance (creeping distance) as defined by law and JIS standards.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned purpose, the thickness of the insulating material used for the base is set in the vicinity of the base pin in a fluorescent lamp with a high rated voltage, such as a fluorescent lamp with a tube diameter of φ25.5 mm or less, such as a fluorescent lamp dedicated for high-frequency lighting. This is achieved by increasing the thickness of a part or all of the insulating material in the vicinity of the aluminum shell rather than the thickness.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described based on the embodiment shown in FIG. FIG. 1 is a sectional view of a G13 base used for a straight tube fluorescent lamp. In the figure,
[0008]
Comparison of insulation distance (creeping distance) between G13 base for φ25.5mm constructed in this way and G13 base A for φ25.5mm (Fig. 2) and G13 base B (Fig. 3), which are generally used at present. Table 2 shows the results obtained.
As a result of the measurement, it was confirmed that the product of the present invention is effective in securing an insulation distance (creeping distance) as compared with a G13 base for φ25.5 mm that is generally used at present.
[0009]
In this embodiment, phenol resin is used as the
[0010]
[Table 2]
Table 2 shows a comparison of the insulation distance (creeping distance) between the product of this example and the conventional product.
[0012]
【The invention's effect】
As described above, the present invention increases the thickness of the insulating material in the vicinity of the metal shell from the thickness of the insulating material in the vicinity of the base pin, thereby reducing the diameter of the fluorescent lamp and the insulating distance of the base portion due to the high rated voltage ( Creeping distance) shortage can be prevented.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a base for a fluorescent lamp showing an embodiment of the present invention.
FIG. 2 is a sectional view of a conventional fluorescent lamp base A.
FIG. 3 is a sectional view of a conventional fluorescent lamp base B.
[Explanation of symbols]
DESCRIPTION OF
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003076784A JP4296477B2 (en) | 2003-03-20 | 2003-03-20 | Fluorescent lamp base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003076784A JP4296477B2 (en) | 2003-03-20 | 2003-03-20 | Fluorescent lamp base |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004288409A JP2004288409A (en) | 2004-10-14 |
| JP4296477B2 true JP4296477B2 (en) | 2009-07-15 |
Family
ID=33291711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003076784A Expired - Fee Related JP4296477B2 (en) | 2003-03-20 | 2003-03-20 | Fluorescent lamp base |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4296477B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5723825B2 (en) * | 2012-05-14 | 2015-05-27 | 三菱電機照明株式会社 | Base, illumination lamp, and base manufacturing method |
| JP2014235928A (en) * | 2013-06-04 | 2014-12-15 | 東芝ライテック株式会社 | Straight tube type lamp and lighting device |
| JP6162169B2 (en) * | 2015-03-30 | 2017-07-12 | 三菱電機照明株式会社 | Base and lighting lamp |
-
2003
- 2003-03-20 JP JP2003076784A patent/JP4296477B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004288409A (en) | 2004-10-14 |
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