The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1999
Filed:
Sep. 19, 1997
Applicant:
Inventors:
Takayoshi Konishi, Tokyo, JP;
Takeshi Azami, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313 45 ; 313 40 ; 313 44 ; 165 802 ; 361688 ;
Abstract
A plurality of a U-shaped heat radiation plates are provided on a heat radiating tube. These U-shaped plates have different sizes and elongated in the same direction so as to cross an axis of the tube. The emissive heat radiator may also includes at least one radiating plate 2 substantially perpendicular to each axis of the U-shaped plates. A concave surface of the U-shaped plate is subjected to a radiation surface processing, and a convex surface thereof is subjected to a reflection surface processing.