Patent ID: 6052282
Filing Date: 2000-04-18
Classification: H05K

Abstract:
Electronic equipment comprising:a plurality of equipment housings containing electronic circuit units and being tiered;first and second housing through air passageways provided respectively at both sides sandwiching the electronic circuit units of the plural equipment housings, the first housing through air passageways communicating with each other and the second housing through air passageways communicating with each other;first air passageways provided respectively at lower parts of the plural equipment housings to supply air of the first housing through air passageway into the insides of plural equipment housings;ventilation windows provided respectively at upper parts of the plural equipment housings; andsecond air passageways provided respectively at bottom portions of the plural equipment housings to transmit heat from the ventilation windows of the equipment housings at lower stages into the second housing through air passageway.