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Ultrasonic output device

An output device, ultrasonic technology, applied in the direction of sound signal device, signal device, transportation and packaging, etc., can solve the problem of alarm sound and noise

Inactive Publication Date: 2021-02-02
DENSO ELECTRONICS CORP ANJO CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] As a result of the inventor's detailed research, in the technology of Patent Document 1, for example, a configuration in which an alarm sound is emitted to pedestrians is considered, but in this case, there is a problem that the alarm sound becomes noise for pedestrians other than pedestrians.

Method used

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Embodiment approach

[0025] [1-1. Structure]

[0026] An alarm system 1 according to one aspect of the present disclosure is installed in a vehicle such as a passenger car, for example, and generates an audible sound using ultrasonic waves, and transmits the audible sound toward a pedestrian or other object to provide an alarm. The vehicle on which the alarm system 1 is installed is also referred to as the own vehicle.

[0027] Such as figure 1 As shown, the alarm system 1 includes a control unit 10 and a plurality of parametric speakers L36 and R37. In addition, the warning system 1 may include a front radar 21, a front camera 22, a vehicle speed sensor 23, a yaw rate sensor 24, a steering angle sensor 25, an accelerator opening sensor 26, actuators L31, R32, and the like.

[0028] Such as figure 2 As shown, the parametric speakers L36 and R37 are arranged horizontally in the front grille 51 of the own vehicle. The front grill 51 is provided with a plurality of slits, and the slits function ...

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Abstract

The ultrasonic output device of the present disclosure includes a plurality of ultrasonic output units ( L36 , R37 ) and an overlapping range changing unit ( S160 ). A plurality of ultrasonic output units are configured to be arranged horizontally in a vehicle, and transmit audible sounds generated by ultrasonic waves having the same phase to respective sound field regions (61) representing predetermined regions. The overlapping range changing unit is configured to change the range of an overlapping area (62) indicating an area where a plurality of sound field areas overlap according to an external command.

Description

[0001] Cross References to Related Applications [0002] This international application claims priority based on Japanese Patent Application No. 2017-016809 filed with the Japan Patent Office on February 1, 2017, and the entire contents of Japanese Patent Application No. 2017-016809 are incorporated into this international application by reference. technical field [0003] The present disclosure relates to an ultrasonic output device that utilizes ultrasonic waves to generate audible sounds. Background technique [0004] Patent Document 1 described below discloses a technique of using a parametric speaker for outputting audible sound generated by ultrasonic waves in an automobile. [0005] Patent Document 1: Japanese Patent Laid-Open No. 2011-162073 [0006] As a result of the inventor's detailed studies, the technique of Patent Document 1 considers, for example, a configuration that sends an alarm sound to pedestrians. However, in this case, there is a problem that the ala...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R3/00B60Q5/00H04R1/32
CPCB60Q5/00G10K11/26H04R1/32H04R1/403H04R2217/03H04S2420/03H04R1/34
Inventor 中山利明
Owner DENSO ELECTRONICS CORP ANJO CITY