Title:
ULTRA-DIRECTIONAL SPEAKER
Document Type and Number:
WIPO Patent Application WO/2021/090998
Kind Code:
A1
Abstract:
Disclosed is an ultra-directional speaker. The ultra-directional speaker may comprise: a sound output device which consists of at least one speaker unit, wherein the speaker unit outputs a sound corresponding to a signal input from the outside; a pipe which is coupled to the sound output device and outputs the sound, output from the sound output device, to the outside; and a wave guide which is formed inside the pipe and guides the sound output from the sound output device such that the sound has a predefined directionality.
Inventors:
KIM HYUN CHUL (KR)
Application Number:
PCT/KR2019/016146
Publication Date:
May 14, 2021
Filing Date:
November 22, 2019
Export Citation:
Assignee:
KIM HYUN CHUL (KR)
International Classes:
H04R1/34; H04R1/28; H04R1/30; H04R1/40
Foreign References:
| KR101574794B1 | 2015-12-04 | |||
| KR100385388B1 | 2003-05-27 | |||
| KR101836849B1 | 2018-04-19 | |||
| KR101290149B1 | 2013-07-26 | |||
| US20160353199A1 | 2016-12-01 |
Attorney, Agent or Firm:
PARK, Sangyoul (KR)
Download PDF:
Previous Patent: PHOTO-CROSSLINKED HYALURONIC ACID SPONGE AND MANUFACTURING METHOD THEREOF
Next Patent: SUBSTRATE PROCESSING DEVICE HAVING HEAT HOLE
Next Patent: SUBSTRATE PROCESSING DEVICE HAVING HEAT HOLE