Electron gun fixer
AssigneeNEC Corporation
InventorShinji Arai
Life of this patent
Estimating the term…
Abstract
An electron gun fixer comprising bulb spacers fixed to an electron gun to be inserted into a bulb neck. Each of the bulb spacers has a supporting portion to be put into press contact with the inner surface of the bulb neck. The expression “R1≧R2>R3” holds for the supporting portion, where R1 is the radius of curvature in the cross section along the direction of insertion of the electron gun into the bulb neck, R2 is the curvature of a peripheral part in the cross section perpendicular to the direction of insertion, and R3 is the radius of curvature for the remaining parts in the cross section perpendicular to the direction of insertion. R2 is substantially equal to the radius of curvature R0 of the bulb neck.
Claims4
An electron gun fixer comprising,
- bulb spacers fixed to an electron gun, said electron gun being to be inserted into a bulb neck, and said bulb spacers each having a supporting portion to be put into press contact with the inner surface of said bulb neck, wherein the equation “R1≧R2>R3” holds for said supporting portion, where
- R1 is the radius of curvature in the cross section along the direction of insertion of said electron gun into said bulb neck, R2 is the radius of curvature of a peripheral part in the cross section perpendicular to the direction of insertion, and R3 is the radius of curvature of the remaining parts in the cross section perpendicular to the direction of insertion;
- and
- R2 is substantially equal to the radius of curvature R0 of said bulb neck.
Dependencies are inferred from the claim text.