Title:
LAMP
Document Type and Number:
Japanese Patent JP3956998
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a screw type lamp with simple processing, highly reliable contact and low cost, which can be always surely connected with a lamp socket even if the lamp is replaced.
SOLUTION: This lamp has a base part 2 screwed to a screw type lamp socket and a light emitting part 1 emitting light. The base part 2 has a thread part 3 and a conductive part 4 which consists of an elastic body provided in the circumferential surface of the thread part 3. The conductive part 4 is partially formed in a screwing axial direction. Thereby, it can always surely be connected by providing a function to provide a contact load of connection of a lamp base and a lamp holder to the lamp base which is a consumable even if the lamp is replaced. The conductive part can be easily machined, has high reliability in contact, saves materials and is inexpensive. The thread part may have at least 1 crest or crests for one round in a circumferential direction.
Inventors:
Ryusuke Kodera
Yoshihide Imaoka
Shinmichi Nishihama
Shimizu Shigeo
Yoshihide Imaoka
Shinmichi Nishihama
Shimizu Shigeo
Application Number:
JP2006180970A
Publication Date:
August 08, 2007
Filing Date:
June 30, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
H01J5/50; H01K1/46
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Attorney, Agent or Firm:
Akio Miyai
Makoto Ito
Makoto Ito