PROBLEM TO BE SOLVED: To provide an electronic alarm horn capable of effectively preventing invasion of rain water without arranging a waterproof sheet and the like.SOLUTION: A cover body 8 is installed to cover an intermediate body 6 from the front, a passage P1 is formed by a center part 82 of the cover body 8 inserted into a cylinder of a cylindrical waterproof wall 621 formed in the intermediate body 6, and second passages P2, P3 and P4 are formed in a concentric shape in which an opening 71 of a resonator 7 is set to be a center by cylindrical waterproof walls 83 and 84 which are formed in the cover body 8 and inserted into cylinders of waterproof walls 622 and 633 of the intermediate body 6. A second passage P4 at the outermost periphery is opened forward.SELECTED DRAWING: Figure 2
【課題】防水シート等を設けることなく雨水の浸入を効果的に防止できる電子式警音器を提供する。【解決手段】中間体6を前方から覆うようにカバー体8を設けて、中間体6に形成した筒状防水壁621の筒内に進入させたカバー体8の中心部82によって第1通路P1が形成され、カバー体8に形成されて中間体6の防水壁622、633の筒内に進入させた筒状防水壁83、84によって、共鳴器7の開口71を中心とする同心状に第2通路P2,P3,P4が形成されている。最外周の第2通路P4が前方へ開放している。【選択図】 図2
ELECTRONIC ALARMING HORN
電子式警音器
2018-09-20
Patent
Elektronische Ressource
Japanisch
IPC: | G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |