公开(公告)号：US3509402A

公开(公告)日：1970-04-28

申请号：US3509402D

申请日：1968-07-03

Applicant: WAGNER ELECTRIC CORP

Inventor： BOIS RICHARD DU JR ,  RAAGO REIN

IPC: H01J31/15 ,  H01J7/42 ,  H01K1/60

CPC classification number: H01J31/15

公开(公告)号：US3688147A

公开(公告)日：1972-08-29

申请号：US3688147D

申请日：1970-08-24

Applicant: WAGNER ELECTRIC CORP

Inventor： RAAGO REIN

IPC: H01G7/02 ,  H01J9/22 ,  H01J31/15 ,  H01J1/88 ,  H01J63/00

CPC classification number: H01G7/023 ,  H01J9/22 ,  H01J31/15

Abstract: An evacuated glass envelope contains a plurality of selectively energizable phosphor-coated elements (anodes) for presenting a symbol display. One or more thermionic cathodes are situated between the display elements and the display surface of the envelope to provide a direct electron beam to the phosphor-coated surfaces. The dull red glow of the thermionic cathodes is masked by the symbol display itself and, optionally, by a filter covering the display surface of the envelope. Variations in intensity at the end portions of the display elements are prevented by eliminating insulating members which would accumulate a charge tending to repel the electron beam. Optionally, the end portions of the display elements may be extended and curved to overlap one another and thus provide a symbol display formed by an unbroken luminous field.

Abstract translation: 真空的玻璃外壳包含多个可选择性激励的磷光体涂覆元件（阳极），用于呈现符号显示。 一个或多个热离子阴极位于显示元件和外壳的显示表面之间，以向荧光体涂覆的表面提供直接的电子束。 热阴极阴极的阴暗红色辉光被符号显示器本身掩蔽，并且可选地由覆盖信封的显示表面的过滤器掩蔽。