US 12,455,072 B2
Perforated acoustic panel, method of producing, and use of the same
Wolfgang Rümler, Neustadt an der Aisch (DE); Michael Viebahn, Ochsenfurt (DE); Markus Rießler, Wolpertshausen (DE); and Goetz Viering, Kitzingen (DE)
Assigned to KNAUF GIPS KG, Iphofen (DE)
Appl. No. 18/251,372
Filed by KNAUF GIPS KG, Iphofen (DE)
PCT Filed Nov. 6, 2020, PCT No. PCT/EP2020/000188
§ 371(c)(1), (2) Date May 1, 2023,
PCT Pub. No. WO2022/096077, PCT Pub. Date May 12, 2022.
Prior Publication US 2024/0019116 A1, Jan. 18, 2024
Int. Cl. F21V 33/00 (2006.01); E04F 13/08 (2006.01); F21Y 105/10 (2016.01); F21Y 115/10 (2016.01); G10K 11/168 (2006.01)
CPC F21V 33/006 (2013.01) [E04F 13/0866 (2013.01); E04F 13/0867 (2013.01); E04F 2290/026 (2013.01); F21Y 2105/10 (2016.08); F21Y 2115/10 (2016.08); G10K 11/168 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A perforated acoustic panel for mounting to a wall and/or a ceiling, the panel comprising:
a visible front side and a rear side opposite the front side, the rear side being hidden when the panel is mounted; and
a flexible printed circuit layer, FPC, attached to the rear side of the panel, the FPC comprising a plurality of LEDs, each LED arranged to be positioned to emit light through a perforation of the panel,
wherein the FPC is attached to the perforated acoustic panel with an attachment comprising an attachment free margin around an entire outer periphery of each of the perforations which allow the FPC to vibrate with a sound wave that reaches the FPC.