Heating pack

Abstract

The present invention relates to a heating pack including: a heating element; a first pack in which the heating element is charged therein and sealed; a second pack sealing the inside thereof in a state where the first pack is accommodated therein, and having a water introducing hole through which water is introduced through one of a front surface and a rear surface thereof; and a temporary blocking member attached in a state in which it blocks the water introducing hole, wherein the temporary blocking member is melted by water. Accordingly, in a normal state, the heating element can be prevented from being contaminated or acting as a heater due to the introduction of foreign matter from outside. Also, when a life jacket wearer falls into the water, the heating element is melted by the water, so that the heating element may be heated without any additional action taken by the wearer.

1 . A heating pack comprising:
 a heating element;   a first pack which is sealed in a state where it charged with the heating element;   a second pack serving to seal the first pack which is accommodated therein and having a water introducing hole formed at one of the front face or the rear face thereof for introducing water into the heating pack; and   a temporary blocking member which is adhered onto the second pack in such a way as to block the water introducing hole and is melted down by water,   wherein the temporary blocking member is manufactured in the form of a thin sheet made with a compound of starch flour and glycerin gelatin and is cut in such a way as to be larger than the water introducing hole, and then, is joined to the second pack, and   wherein the size of the water introducing hole is in the range of 4 mm to 8 mm, and the water introducing hole includes a partitioning member which divides and partitions an inlet of the water introducing hole into a plurality of holes.   
     
     
         2 . The heating pack according to  claim 1 , wherein the second pack is made of a water-proofing material. 
     
     
         3 . The heating pack according to  claim 1 , wherein when the front face of the second pack is quartered, the water introducing hole is formed at a bisected portion of the lower part. 
     
     
         4 . The heating pack according to  claim 3 , wherein the water introducing hole is formed at the left side edge of the upper end of the left side quadrant or at the right side edge of the upper end of the right side quadrant of the lower part.