US Patent No. 9,642,316

SHADING DEVICE


Patent No. 9,642,316
Issue Date May 09, 2017
Title Shading Device
Inventorship Joseph Hendrik Anna Maria Jacobs, Eindhoven (NL)
Assignee PHILIPS LIGHTING HOLDING B.V., Eindhoven (NL)

Claim of US Patent No. 9,642,316

1. A method of operating a shading device for a greenhouse, the method comprising:
providing a shading device, the shading device comprising:
a shading element having an outer side and an inner side, the shading element comprising interwoven electrically conductive
first thread elements and electrically insulating second thread elements, wherein the electrically conductive first thread
elements include a reflective layer for reflecting an ambient light, and wherein the electrically insulating second thread
elements also include a reflective layer for reflecting an ambient light; and

at least one lighting element, each said lighting element being disposed at the inner side of the shading element and being
connected with at least two of the first thread elements,

wherein each lighting element is driven by an electrical current, conducted by the first thread elements, resulting in the
emission of an artificial light, illuminating a plant growing in the greenhouse;

adjusting an amount of an artificial light emitted by the at least one lighting element in response to an amount of an ambient
light in order to achieve a constant illumination of the plants during day time; and

adjusting the amount of artificial light emitted by the at least one lighting element at night to a higher amount compared
to the amount of the artificial light during day time; and

adjusting the amount of artificial light at night to equal the total amount of ambient light and artificial light during day
time.