JPS60130440U

JPS60130440U - Original illumination device

Info

Publication number: JPS60130440U
Application number: JP1775484U
Authority: JP
Inventors: 満蔵田; 黒田　網紀; 毅渡辺
Original assignee: キヤノン株式会社
Priority date: 1984-02-10
Filing date: 1984-02-10
Publication date: 1985-08-31

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１区は直管形蛍光ランプを光源とする原稿照明装置を
具備させた画像形成装置、或は画像読取り装置の一例の
原稿照明部分の極く概略の断面図、第２図ａ及びｂは従
来の直管形蛍光ランプのソケットを含む平面図と、その
光量分布特性グラフ、第３図は本案の一実施例装置の一
部切欠き平面図、第４薗はランプ口金部分の斜面図、第
５図は第１図■−Ｖ線示図、第６図は第２実施例のラン
プ口金部分の端面図、第７図は同斜面図、第８図は第３
実施例のランプ口金部分の端面図、第９図は同斜面図、
第１０図は第４実施例のランプ口金部分の斜面図、第１
１図は同斜面図、第１２図はアパーチャタイプのガラス
管の断面図。１はガラス管、２，２は口金、３，３′は受電子、１０
，４はソケット。「潤＝チー、ｃ、−−□−−−−−−−−用The first section is a very schematic cross-sectional view of the document illumination part of an example of an image forming apparatus or image reading device equipped with a document illumination device using a straight tube fluorescent lamp as a light source, and FIGS. 2a and 2b are A plan view including the socket of a conventional straight tube fluorescent lamp and a graph of its light intensity distribution characteristics; FIG. 3 is a partially cutaway plan view of an embodiment of the device of the present invention; Fig. 5 is a diagram showing the line ■-V in Fig. 1, Fig. 6 is an end view of the lamp base portion of the second embodiment, Fig. 7 is a perspective view of the same, and Fig. 8 is a diagram showing the third embodiment.
An end view of the lamp base portion of the embodiment, FIG. 9 is a slope view of the same,
Fig. 10 is a perspective view of the lamp cap part of the fourth embodiment;
Figure 1 is a perspective view of the same, and Figure 12 is a cross-sectional view of the aperture type glass tube. 1 is a glass tube, 2, 2 is a cap, 3, 3' is an electron receiver, 10
, 4 is a socket. ``Jun = Qi, c, --□---------

Claims

[Scope of utility model registration request]

A document illumination device using a straight tube fluorescent lamp as a light source is characterized in that the straight tube fluorescent lamp uses a glass tube in which the receivers of each cap at both ends of the glass tube are provided on the circumferential surface of the cap side. Document illumination device.