HEAT DISSIPATING STRUCTURE OF ELECTRIC CONNECTION BOX

摘要

PROBLEM TO BE SOLVED: To surely dissipate heat inside an electric connection box, and prevent water and dust from permeating into the inside of the electric connection box from an aperture for radiation. SOLUTION: This connection box accommodates a circuit board 12 mounting electronic components in cases 10, 11. A bulkhead 10b for dividing the electronic components into heat generating components 14 and components 15 which do not generate heat is protruded from the inner surface of a wall part 10a of the case 10. Thus the inside of the case is divided into an accommodation chamber 20 for heat generating components and an accommodation chamber 21 for components which do not generate heat. An aperture 10d for radiation is formed in the case wall part on the side of the heat generating components accommodation chamber. A shielding body 25 wherein a plurality of slant plates 10e are arranged in parallel at constant intervals is installed in the aperture 10d.