A heat module comprising: a heat unit ; an insulator configured to insulate the heat unit ; and a fixing part configured to fix the heat unit at a certain location on the insulator ; the heat unit comprising: a conductor configured to cause electricity to flow therethrough in a lengthwise direction; and a heating element configured to generate heat from the electricity transferred thereto from the conductor , wherein the heating element surrounds the conductor in the lengthwise direction to prevent occurrence of electric shock; characterized in that the heat unit is located at one side of the insulator , wherein the insulator comprises a through-space (S1) configured such that the heat unit is prevented from passing therethrough but the fixing part is allowed to pass therethrough, and wherein the fixing part comprises: a fixing exposure part located at another side of the insulator ; a fixing pass part extending from one end of the fixing exposure part to pass through the through-space (S1); and a fixing and surrounding part extending from the fixing pass part to surround the heat unit located at the one side of the insulator . a heat unit ; an insulator configured to insulate the heat unit ; and a fixing part configured to fix the heat unit at a certain location on the insulator ; the heat unit comprising: a conductor configured to cause electricity to flow therethrough in a lengthwise direction; and a heating element configured to generate heat from the electricity transferred thereto from the conductor , wherein the heating element surrounds the conductor in the lengthwise direction to prevent occurrence of electric shock; characterized in that the heat unit is located at one side of the insulator , wherein the insulator comprises a through-space (S1) configured such that the heat unit is prevented from passing therethrough but the fixing part is allowed to pass therethrough, and wherein the fixing part comprises: a fixing exposure part located at another side of the insulator ; a fixing pass part extending from one end of the fixing exposure part to pass through the through-space (S1); and a fixing and surrounding part extending from the fixing pass part to surround the heat unit located at the one side of the insulator . a conductor configured to cause electricity to flow therethrough in a lengthwise direction; and a heating element configured to generate heat from the electricity transferred thereto from the conductor , wherein the heating element surrounds the conductor in the lengthwise direction to prevent occurrence of electric shock; characterized in that the heat unit is located at one side of the insulator , wherein the insulator comprises a through-space (S1) configured such that the heat unit is prevented from passing therethrough but the fixing part is allowed to pass therethrough, and wherein the fixing part comprises: a fixing exposure part located at another side of the insulator ; a fixing pass part extending from one end of the fixing exposure part to pass through the through-space (S1); and a fixing and surrounding part extending from the fixing pass part to surround the heat unit located at the one side of the insulator . a fixing exposure part located at another side of the insulator ; a fixing pass part extending from one end of the fixing exposure part to pass through the through-space (S1); and a fixing and surrounding part extending from the fixing pass part to surround the heat unit located at the one side of the insulator . <EOS>