| 摘要 |
<p>PURPOSE:To provide a method for dissipating heat from a inside box by which the temperature in the box can be lowered efficiently through a simple structure. CONSTITUTION:An electric joint box 1 comprises a case 2 containing electric components, e.g. fuses 12 and relays 13, connected directly or through a bus bar or a connector with I/O wires 14 for forming a predetermined circuit. An upper moisture-proof and dustproof cover 3 is normally fitted to the component mounting side and a lower cover 4 having a wire lead-out port 17 is fitted, as required, to the wire 14 lead out side. A hollow pipe 5 having suction and discharge ports 6, 7 is formed integrally on the side face of the upper cover 3 and a nozzle part 8 is formed in the way of the hollow pipe 5 and a suction hole 9 penetrating through the case is made in the downstream of the nozzle part 8.</p> |
