Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1991-07-16
1993-10-05
Yusko, Donald J.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313318, 313623, 313626, 313634, 313331, H01J 6100, H01J 554, H01J 6134
Patent
active
052508722
ABSTRACT:
In a discharge lamp unit in which a discharge lamp (10), which is formed by pinch-sealing (13a, 13b) a glass tube in such a manner as to define a closed glass ball (12) forming an electric discharge region substantially at the middle of the ball and in which discharge electrodes (15a, 15b) are arranged confronted with each other, is supported at both ends by metal supports (30, 40) which are welded to a short lead support (22) and a long lead support (24) protruding from an insulating base (20) in such a manner that the lead supports (22, 24) are parallel to one another with a predetermined distance therebetween and are parallel to the discharge axis of the lamp. The metal support (30) which supports the rear end portion of the discharge lamp has a discharge lamp holding portion (34) which is arcuate, and the part (14) of the rear end portion of the discharge lamp which is held by the discharge lamp holding portion of the metal support is circular in cross section. Thus, the metal supports which support the discharge lamp can be manufactured readily, and the discharge lamp is high in durability and can be easily adjusted in position.
REFERENCES:
patent: 2103028 (1937-12-01), Bol
patent: 5059855 (1991-10-01), Irisawa et al.
patent: 5075586 (1991-12-01), Jaeger et al.
patent: 5075587 (1991-12-01), Pabst et al.
Handa Masami
Hirozumi Yasuo
Ohshio Hirohiko
Wakimizu Yukio
Yoshida Yonemasa
Koito Manufacturing Co. Ltd.
Patel Ashok
Yusko Donald J.
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