Ladder position indicator light module

A flasher module, installable on an extension ladder, comprising:

• an elongated watertight housing which spans a major portion of a length of an upper rung of the extension ladder, said housing having a generally transparent tube and a pair of end pieces, each of which caps an end of the generally transparent tube and is securable to a lower surface of a ladder rung, each of said end pieces being adjacent a rail of the extension ladder;
• an electro-chemical power source installed within said housing;
• flasher circuitry installed within said housing and powered by said electro-chemical power source;
• at least one light-emitting diode installed within said generally transparent tube, and coupled to said electro-chemical power source through said flasher circuitry;
• and
• a gravity switch installed within said housing, which connects power to said flasher circuitry and said at least one light-emitting diode when the extension ladder is elevated to an angle greater than about 45 degrees from horizontal.

A flasher module system, installable on an extension ladder, comprising:

• a pair of housings, each of which is shaped and sized to slide into an uppermost portion of an extension ladder rail to which it is subsequently secured, each housing installed separately in one rail of the extension ladder opposite the other rail;
• an electro-chemical power source installed within each of said housings;
• flasher circuitry installed within each of said housings and powered by the electro-chemical power source resident in the housing;
• at least one light-emitting diode installed within said housing behind said transparent portion and coupled to said electro-chemical power source through said flasher circuitry;
• and
• a gravity switch installed within said housing, which connects power to said flasher circuitry and said at least one light-emitting diode when the extension ladder is elevated to an angle greater than about 45 degrees from horizontal.