Front defroster nozzle apparatus

A front defroster nozzle apparatus comprising:

• a cylindrical retainer including an inlet opening being connectable with an air-conditioning system, and a blow-out or outlet port opened under a windshield within a vehicular passenger room;
• and
• a guide fin disposed inside the retainer;
• the retainer further including a retainer base involving the inlet opening, a first branch, and a second branch, the first and second branches being continuous from a downstream side of the retainer base, and branched from the retainer base into two forked elements;
• the first branch including a first inlet end being continuous from the retainer base, and a first blow-out or outlet opening making a part of the outlet port;
• the second branch including a second inlet end being continuous from the retainer base, and a second blow-out or outlet opening making another part of the outlet port;
• the outlet port involving the first and second outlet openings to have a blow-out or outlet width of 400 mm or less;
• the outlet width of the outlet port being larger than an opening width that the inlet opening has;
• the first outlet opening having a first opening width being larger than a first flow-passage width that the first inlet end has;
• the second outlet opening having a second opening width being larger than a second flow-passage width that the second inlet end has;
• the retainer base including a throttled portion whose flow-passage cross-sectional area is smaller than a flow-passage cross-sectional area that the inlet opening has;
• and
• the flow-passage cross-sectional area of the throttled portion falling in a range of from 80% or less to 60% or more of the flow-passage cross-sectional area of the inlet opening.