US 12,331,753 B2
Blade construction
Dennis Thomsen, Fredericia (DK); and Jesper Hermansen, Skanderborg (DK)
Assigned to NORDICCO A/S, Fredericia (DK)
Appl. No. 18/575,211
Filed by Nordicco A/S, Fredericia (DK)
PCT Filed Jun. 16, 2022, PCT No. PCT/DK2022/050130
§ 371(c)(1), (2) Date Dec. 28, 2023,
PCT Pub. No. WO2023/274473, PCT Pub. Date Jan. 5, 2023.
Claims priority of application No. 2021 70334 (DK), filed on Jun. 28, 2021.
Prior Publication US 2024/0328430 A1, Oct. 3, 2024
Int. Cl. F04D 29/38 (2006.01); F04D 19/00 (2006.01); F04D 25/06 (2006.01); F04D 29/00 (2006.01); F04D 25/08 (2006.01)
CPC F04D 29/388 (2013.01) [F04D 19/002 (2013.01); F04D 25/0693 (2013.01); F04D 29/005 (2013.01); F04D 25/088 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A blade construction for a blade for a fan, wherein said blade construction incorporates a light source configured to emit light away from said blade, and where said blade has a longitudinal extent in use radially to an axis of rotation for said fan, such that the blade construction has a root end suitable to be attached to a rotor unit, and a distal end furthest away from said root end, where the blade has an aerodynamic profile in a cross-section orthogonal to the longitudinal direction and where said blade construction comprises:
a) a first longitudinal chamber suitable to accommodate an electrical wire;
b) a second longitudinal chamber suitable to accommodate:
i) a transformer unit proximate the root end;
ii) said light source proximate the distal end;
c) a third longitudinal chamber suitable to accommodate:
i) a mounting bracket proximate the root end, the mounting bracket allowing the blade to be mounted to the rotor unit;
ii) an endcap proximate the distal end, the end cap having a cross-section corresponding to the cross-section of the blade, and where the endcap has a closed side and an opposing side having means for being attached to the blade, said means projecting into said third longitudinal chamber; and
d) a fourth longitudinal chamber allowing the blade to obtain the aerodynamic profile;
wherein the second longitudinal chamber forms an open top cavity, allowing the light source to emit light out of the cavity, and where either:
light source holding means are provided in the cavity furthest away from said distal end for fixing the light source in the cavity, and where electrical socket connection means are provided proximate the distal end for providing electrical current to the light source, where said electrical socket connection means may be fixable in said end cap,
or
a light source holding tray is provided, said tray fitting inside the open top cavity, where said tray comprises means for fixing and holding a light source and for providing electrical current to said light source, and wherein the outer dimensions of the tray are configured to be insertable into the open top cavity, and where the means for fixing and holding a light source and for providing electrical current to said light source is different for different trays, such that different size or type of light sources may be installed in different trays.