EP 0991295 A2 20000405 - Speaker and speaker device
Title (en)
Speaker and speaker device
Title (de)
Lautsprecher und Lautsprechergerät
Title (fr)
Haut-parleur et dispossitif à haut-parleur
Publication
Application
Priority
JP 27302898 A 19980928
Abstract (en)
A speaker has a very small size and is arranged to emit sound waves in a non-directional manner. The speaker includes a case (12) and a speaker unit (16) attached to a plate (14) provided at an opening of the case (12). The speaker is arranged so that the speaker unit (16) is mounted or attached to a floor or support surface such that a space formed by the case (12), the plate (14) and the speaker unit (16) is airtight and so that the back-and-forth motion of a vibrator of the speaker unit (16) generates expansion and contraction of the case (12).
IPC 1-7
IPC 8 full level
H03F 3/181 (2006.01); H04R 1/00 (2006.01); H04R 1/02 (2006.01); H04R 1/28 (2006.01)
CPC (source: EP)
H04R 1/2834 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0991295 A2 20000405; EP 0991295 A3 20060719; JP 2000102082 A 20000407
DOCDB simple family (application)
EP 99402359 A 19990928; JP 27302898 A 19980928