Title:
NEON LAMP FOR DISPLAY
Document Type and Number:
Japanese Patent JP3484571
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve directivity and stabilize brightness in a neon lamp for display by controlling glow at tip parts 41, 41 of an internal electrode 4.
SOLUTION: A glass bulb 1 is formed in a cylinder shape, on one end face of which is provided a lens-shaped part, and the other end face 3 opposing the lens-shaped part 2 is formed flat, the inside of the bulb in the form of a sealed vacuum space. Inside the glass bulb 1 is arranged a pair of internal electrodes 4 in parallel along the bulb axis direction. Tip parts 41 of the internal electrodes 4 are made to protrude inward facing each other with shorter interval than any other parts of the internal electrodes.
Inventors:
Masamichi Sugawara
Application Number:
JP2000270816A
Publication Date:
January 06, 2004
Filing Date:
August 02, 2000
Export Citation:
Assignee:
Harrison Toshiba Lighting Co., Ltd.
International Classes:
H01J61/067; H01J61/64; (IPC1-7): H01J61/64; H01J61/067
Domestic Patent References:
| JP9283077A | ||||
| JP50133780U | ||||
| JP55160065U | ||||
| JP6354247U |
Attorney, Agent or Firm:
Sadakichi Nagao
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