| 摘要 |
PURPOSE:To uniformly wash the entire surface of a head lamp by effectively utilizing a limited quantity of water, by forming the plane shape of the jet orifice opened to the end part of a cylindrical part into a specific structure. CONSTITUTION:The high pressure washing water supplied to a vortex stream forming cavity part 7 through a nozzle case is formed into water droplets by the water stream flowing out from a washing water jet orifice 6 and the high speed vortex stream divided by a drain edge 8 and formed in the vicinity of the jet orifice 6. At this time, the drain edge 8 of the washing water jet orifice 6 is formed by the tip 4a of a top wall part 4 having a curvature of which the diameter is almost the same with the inner diameter of a curved edge 9, and the jet orifice 6 is formed so as to have a plane shape wherein the tip of the drain edge 8 is set to a start point at the inner diameter position A of the curved edge 9 and the ridgeline 4b thereof terminates at the outer diameter position of the curved edge 9 and a limit wall 11 is formed to the opening shoulder part of the jet orifice 6. As a result, the limit wall 11 suppresses the upward scattering force of the washing water injected at a corner part and a jet direction is configurationally limited to a thin wide shape. |
