Title:
HORN DEVICE
Document Type and Number:
Japanese Patent JP2020177056
Kind Code:
A
Abstract:
To more effectively amplify sound pressure, even when a horn device is a so-called "spiral horn" which generates a sound by vibration of air, and amplifies the sound pressure by a resonator.SOLUTION: A movable iron core 115 for vibrating a first diaphragm 114 and a moving member 212 for vibrating a second diaphragm 213 are movably connected in synchronization with each other, respectively. The movable iron core 115 is set to be reciprocable between a first state in which a volume of a second chamber 216 decreases, and the volume of a first chamber 118 increases, by displacement to one axial side, and a second state in which the volume of the first chamber 118 decreases, and the volume of the second chamber 216 increases, by the displacement to other axial side. The number of peak values of sound pressure can get to be double, by generating sounds S2, S1 from second and first resonators 220, 130, respectively, by one reciprocating operation of the movable iron core 115, and sound pressure of a horn device 10 can be amplified compared with conventional cases.SELECTED DRAWING: Figure 3
Inventors:
TAMURA MASAYUKI
NARUSHIMA YOSHIKI
NARUSHIMA YOSHIKI
Application Number:
JP2019077468A
Publication Date:
October 29, 2020
Filing Date:
April 16, 2019
Export Citation:
Assignee:
MITSUBA CORP
International Classes:
G10K9/15; B60Q5/00; G10K9/12
Attorney, Agent or Firm:
Tsutsui International Patent Office