EP 3503585 A1 20190626 - VEHICLE SPEAKER SYSTEM AND AUDIO SYSTEM
Title (en)
VEHICLE SPEAKER SYSTEM AND AUDIO SYSTEM
Title (de)
FAHRZEUGLAUTSPRECHERSYSTEM UND AUDIOSYSTEM
Title (fr)
SYSTÈME DE HAUT-PARLEUR DE VÉHICULE ET SYSTÈME AUDIO
Publication
Application
Priority
JP 2017244718 A 20171221
Abstract (en)
When an audio signal is applied from an audio device (1) to a voice coil (205), a voice coil bobbin (204) vibrates together with a connected diaphragm (208) due to an electromagnetic action of a magnetic flux generated from a magnetic circuit (220) and the audio signal flowing through the voice coil (205) according to the amplitude of the audio signal to generate a sound responsive to the audio signal. A front speaker (2) (Fig. 3A1) and a rear speaker (3) (Fig. 3B1) have substantially the same configuration, but the number of turns and the winding width (ChR) of the voice coil (205) of the rear speaker (3) (Fig. 3B2) is twice the number of turns and the winding width (ChF) of the voice coil (205) of the front speaker (2) (Fig. 3A2).
IPC 8 full level
CPC (source: EP)
H04R 5/02 (2013.01); H04R 9/06 (2013.01); H04R 2499/13 (2013.01)
Citation (applicant)
- JP 2007243430 A 20070920 - PIONEER ELECTRONIC CORP, et al
- JP 2005311908 A 20051104 - FUJITSU TEN LTD
Citation (search report)
[I] WO 03001885 A2 20030109 - HARMAN INT IND [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3503585 A1 20190626; CN 109951770 A 20190628; JP 2019114838 A 20190711
DOCDB simple family (application)
EP 18214712 A 20181220; CN 201811381074 A 20181120; JP 2017244718 A 20171221