Patent ID: 8714796
Filing Date: 2014-05-06
Classification: B60Q,F21S,F21V

Abstract:
1. An outer casing for a headlight: an outer lens having a facing portion, a peripheral portion, an upper portion, a lens thickness, a sealing projection and a water guard rib, the outer lens casted by a transparent thermoplastic resin and formed in a dome shape having an opening, the peripheral portion having an inner surface and an outer surface formed in a ring shape so as to surround the facing portion having the lens thickness of the outer lens and being continuously connected to the facing portion, and therefore the peripheral portion having a substantially same lens thickness as the lens thickness of the facing portion, and connecting to the sealing projection on an opposite side of the facing portion, the opening of the outer lens including at least the inner surface of the peripheral portion, the sealing projection having a thickness, at least three surfaces including an inner surface an outer surface and a connecting surface, and also having an end located between the inner surface and the outer surface on the opposite side of the connecting surface, the connecting surface of the sealing projection being connected to the outer surface opposite the inner surface of the peripheral portion, the thickness of the sealing projection formed in a ring shape defined as a minimum thickness between the inner surface and the outer surface of the sealing projection, and thinning from the connecting surface toward the end of the sealing projection, the water guard rib having a thickness, an outer surface, an end surface and a guard surface being connected to the sealing projection using a resin casted between the connecting surface and the outer surface of the sealing projection, the outer surface of the water guard rib connecting to the outer surface of the sealing projection, the end surface of the water guard rib located between the outer surface and the guard surface of the water guard rib, the guard surface of the water guard rib connecting to the connecting surface of the sealing projection, the thickness of the water guard rib formed in a ring shape defined as a minimum thickness between the guard surface and the outer surface of the water guard rib, and thickening toward the end surface of the water guard rib, and wherein the lens thickness is less than a minimum inscribed circle of the at least three surfaces of the sealing projection and is more than the minimum thickness of the water guard rib; a casing having a first end surface, a second end surface, an upper portion, an inner surface, an opening and a sealing concave portion, and made of an opaque resin, the upper portion of the casing located adjacent the upper portion of the outer lens, the opening of the casing including the inner surface of the casing, the first end surface formed in a ring shape so as to surround the opening, the second end surface also formed in a ring shape so as to surround the first end surface, and thereby the sealing concave portion being formed between the first end surface and the second end surface and along the inner surface of the opening of the casing, and wherein at least the end located between the inner surface and the outer surface of the sealing projection is annularly inserted into the sealing concave portion, and also the second end surface of the casing annularly contacts with the outer surface of the water guard rib of the outer lens; and at least one interlocking member including at least one of a sealing material, an adhesive material and a hot-melt adhesive material, being disposed between the sealing concave portion of the casing and at least one of the end, the inner surface and the outer surface of the sealing projection of the outer lens.