Koito Manufacturing Company, Ltd.

Hideyuki Aihara

Norimasa Yamamoto

Norihiro Nishitani

Hiroki Fujinami

Misao Yamamoto

Fumihiko Mohri

The present disclosure has been made in an effort to provide a vehicular lamp that can adopt a low-priced material having a low heat-resisting temperature as a material for a reflector. A vehicular lamp includes a tail and stop lamp bulb and a reflector reflecting light from bulb to the front of the lamp, in a lamp chamber defined by a lamp body and a front cover. In addition, lamp body includes an opening for exposing the rear surface of reflector in the vicinity of tail and stop lamp bulb to the outside of the lamp chamber.

Vehicular lamp

A marker lamp for a vehicle that has a tail lamp function and a stop lamp function including a bulb, light-emitting diodes and a reflector which are disposed in a lamp chamber defined by a lamp body and a front cover that covers the front portion of the lamp body. The bulb is positioned at the center of the reflector, the reflector is formed with a plurality of openings around the bulb and a primary reflective surface that reflects the light from the bulb substantially forward, and the light-emitting diodes are disposed so as to surround the bulb and face the front cover through the openings formed in the reflector. The tail lamp function is executed by lighting the bulb, and the stop lamp function is executed by lighting the light-emitting diodes.

Marker lamp for a vehicle

A reference parabola is drawn in a vertical plane containing a principal optical axis of a reflector. A reference point of a curve demarcating the right side of a peripheral region of the reflector is set in the horizontal plane containing the principal optical axis. A boundary line of the peripheral region, which is extended along a design line of an outer lens when viewed from the side of a vehicle lamp, is drawn. The end points of the boundary line, and the end points of the reference parabola are determined by an external frame defining outer lines of the reflector viewed from the front side thereof. Of those points, the associated ones are connected by circular arcs, to thereby form a curved surface. The peripheral region forms a part of the curved surface. A region of the reflector intersecting the principal optical axis and continuous to the peripheral region is shaped to have a paraboloid of revolution. A plurality of paraboloids of revolution with different focal distances are set for the peripheral region, to thereby determine intersecting lines where the peripheral region intersects the paraboloids of revolution. A plurality of reflecting steps are disposed on the peripheral region between the adjacent intersecting lines. The reflecting steps are defined by parts of the paraboloids of revolution.

Growing community of inventors

Shizuoka, Japan

Hideyuki Aihara