Title:
LIGHTING DEVICE FOR SINGLE-ENDED FLUORESCENT LAMP
Document Type and Number:
Japanese Patent JP3467480
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device for a single-ended fluorescent lamp capable of controlling the coldest point temperature without using a special means such as amalgam even in a state where ambient temperature of the lamp during lighting rises like with a sealed luminaire and enhancing brightness without increasing the cost or decreasing start characteristics.
SOLUTION: Lighting frequency of a circular fluorescent lamp is specified to 35 kHz or higher, and opening parts 5 passing through in and out a base 2 are installed in the base 2 bridging both ends of a lamp tube.
More Like This:
| JP4913001 | Light source device |
| JP2000277052 | HIGH-PRESSURE DISCHARGE LAMP WITH BASE |
Inventors:
Takashi Ohsawa
Go Yoshikawa
Go Yoshikawa
Application Number:
JP2001106688A
Publication Date:
November 17, 2003
Filing Date:
March 03, 1995
Export Citation:
Assignee:
Osram Melco K.K.
International Classes:
H01J5/50; H01J61/72; (IPC1-7): H01J5/50; H01J61/72
Domestic Patent References:
| JP3108251A |
Attorney, Agent or Firm:
Shoji Mizoi