公开(公告)号：US3768957A

公开(公告)日：1973-10-30

申请号：US3768957D

申请日：1971-09-21

Applicant: PHILIPS CORP

Inventor： VAN DER TAS J ,  EDUARD C

IPC: F21K5/08 ,  F21K5/02

CPC classification number: F21K5/02

Abstract: A flash bulb of the combustible type in which at least the current conductors within the envelope are surrounded by a separate tubular body which shields the envelope walls from heat and ignition and shields the current conductors from the wire filling.

Abstract translation: 可燃型的闪光灯泡，其中至少外壳内的电流导体被独立的管状体围绕，该管状体屏蔽封套壁免受热量和点火，并屏蔽电流导体与电线填充物。

公开(公告)号：US3721515A

公开(公告)日：1973-03-20

申请号：US3721515D

申请日：1971-11-02

Applicant: PHILIPS CORP

Inventor： VAN DER TAS J ,  MEULEMANS C ,  BOEKKOOI A ,  HURX A

IPC: F21K5/08 ,  F21K5/02

CPC classification number: F21K5/02

Abstract: A combustion flash bulb ignited by means of a piezo-electric ignition in which, to protect the wall of the envelope, a separate tubular inner envelope is arranged in the envelope, said inner envelope being open at its end facing the lamp base and comprising the metal wool to be burned. In order to attenuate the shock wave occurring during the combustion in the inner envelope, said inner envelope comprises opposite to the open tube end a narrowed end in which an aperture is provided. The inner envelope is thin-walled and manufactured from a soft glass.