Direct current powered heating pad for bed

Abstract

A DC powered electric heating pad for a bed is invented comprising a plurality of carbon fiber filaments (2a) arranged in parallel for generating heat, a power distributing element (2c) for supplying power to the carbon fiber filaments (2a), a pair of metal bands (2b) for coupling both ends of the carbon fiber filaments (2a) and distributing the power supplied through the power distributing element (2c), a thermal material (2) for enveloping the carbon fiber filaments (2a) to consistently maintain the heat, and covering materials (1, 3) for protecting the thermal material (2) and the carbon fiber filaments (2a). An adapter with a bridge rectifier circuit is plugged into a regular outlet of AC as a power source for transforming to DC. The carbon fiber filament (2a) emitting the far-infrared with negative ions is designed to have excellent conductivity, durability, and ultra-light weight for protecting against harmful electrical waves by using DC.

Dependencies are inferred from the claim text.