US 11,959,616 B2
Battery powered light tower
Stephen Bryan Avery, Milwaukee, WI (US); Brian Todd Brunelli, Franklin, WI (US); Dave Jones, Holdrege, NE (US); Andrew Grasz, Holdrege, NE (US); and Cole Booth, Holdrege, NE (US)
Assigned to Briggs & Stratton, LLC, Wauwatosa, WI (US)
Filed by Briggs & Stratton, LLC, Wauwatosa, WI (US)
Filed on Oct. 14, 2022, as Appl. No. 17/966,371.
Claims priority of provisional application 63/256,228, filed on Oct. 15, 2021.
Prior Publication US 2023/0123259 A1, Apr. 20, 2023
Int. Cl. F21S 8/08 (2006.01); F21S 9/02 (2006.01); F21V 21/15 (2006.01)
CPC F21S 8/085 (2013.01) [F21S 9/02 (2013.01); F21V 21/15 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A light tower comprising:
a base;
an extendible mast coupled to the base, wherein the extendible mast is configured to move between a lowered position and a raised position;
a battery pack supported on the base and including a plurality of lithium-ion battery cells;
a light assembly including a plurality of light emitting diodes, the light assembly coupled to the extendible mast and the light emitting diodes electrically coupled to the battery pack;
a user interface configured to receive inputs and display information;
a plurality of dimmable drivers coupled to the light assembly;
a light sensor configured to detect a brightness of the light assembly; and
a controller in communication with the battery pack, the light assembly, and the user interface, the controller being configured to:
instruct the user interface to display a runtime based on a light intensity of the plurality of light emitting diodes;
receive a light intensity change input from the user interface;
receive the brightness of the light assembly from the light sensor and, in response, instruct the plurality of dimming drivers to change the brightness of the light assembly;
change the light intensity of the plurality of light emitting diodes by adjusting a power provided by the battery pack to the light emitting diodes in response to the light intensity change input; and
display on the user interface an updated runtime resulting from the change of the light intensity of the plurality of light emitting diodes.