| 摘要 |
PROBLEM TO BE SOLVED: To improve ventilation performance by communicating an inlet port and a discharge port with a space inside of a lamp, communicating the inlet port with an engine charging air cleaner in the downstream of a filter, and communicating the discharge port with a surge tank arranged in front of the engine and connected to the air cleaner through a blowing pipe. SOLUTION: Branch tools 8, 8a are connected to air hoses 7, 7a from a branch port 1b of an air cleaner 1 in the downstream of a filter 1a thereof and from a branch port 3b of a surge tank 3 arranged in front of an engine 4. Other two ports are connected to an inlet port and a discharge port provided with a space in an upper and a lower surfaces of a back surface of a housing for both head lamps 10 through air hoses 9, 9b, and 9c, 9d. During the operation of the engine 4, negative pressure more negative than that of the air cleaner 1 is generated in a surge tank 3 for sucking the air from the filter 1a through a blower pipe 2 and air pressure of the discharge port becomes lower than that of the inlet port, and a sufficient quantity of the air from the air hose 7 is circulated in the head lamp 10, and returned to the surge tank 3. |
