The present disclosure provides a light bulb for use in a lamp housing of a vehicle. The light bulb includes a bulb body assembly having one or more light sources fixedly attached thereto, and a mounting assembly configured to mount on the lamp housing. The bulb body assembly and the mounting assembly are connected by a rotatable joint such that positions of the one or more light sources can be adjusted after the mounting assembly is mounted on the lamp housing. In some embodiments, a key portion is attached to the bulb body assembly to rotate the bulb body assembly relative to the mounting assembly.

According to one embodiment, a vehicle lighting device includes a mounting portion that has a recessed portion; a plurality of bayonets that are provided on an outside surface of the mounting portion; a substrate that is provided on a bottom surface of the recessed portion; and a light emitting element that is provided on a side of the substrate opposite to a bottom surface side of the recessed portion.

In a case where the vehicle lighting device is viewed from a light emitting side, at least one corner portion of the substrate overlaps with any one of the plurality of bayonets.

A vehicle lighting unit with a bulb fixation structure is configured such that a metal supporter spring is attached to an opening end face of a holder projected from a peripheral edge of a bulb attachment hole opened in a reflector, engagement claws provided to the bulb pass through respective claw escape holes formed in the supporter spring so that the bulb is incorporated within the holder, and then the bulb is rotated. Thereby, the bulb is fixed to the main body with a type of a bayonet scheme in which the engagement claws of the bulb are interposed in between and held by the engagement spring of the supporter spring and an opening end face of the bulb attachment hole. The supporter spring is attached to the opening end face of the holder by countersunk screws at at least three locations in a circumferential direction of the supporter spring.

The present subject matter relates to headlight bulb devices, systems, and methods for vehicle headlights in which a headlight bulb assembly includes a bulb mounting collar configured to be engaged with a bulb base cavity in a housing of the vehicle headlight; a bulb body comprising one or more LED element, wherein the bulb body is configured to be coupled to the bulb mounting collar, and wherein the bulb body is rotatable to a range of angular positions relative to the bulb mounting collar; and a tension spring configured to apply a biasing force that acts to retain one or both of the bulb mounting collar or the bulb body in a desired position with respect to the bulb base cavity.

The present invention enables further improvement of luminous efficiency of a semiconductor light-emitting element. In the present invention, a mounting member, a substrate, two semiconductor light-emitting elements, and three terminals are configured as a socket which is an integral structure, while a control circuit is configured separately from the socket. As a result, in the present invention, the control circuit is separated from the substrate of the socket, and therefore it becomes possible to further improve the luminous efficiency of the semiconductor light-emitting elements.

A vehicle lighting unit ensures support rigidity of a substrate connection part in the front-rear direction without increasing components. The vehicle lighting unit includes a light source part, a power feeding member, a heat dissipation member, and a socket. The light source part has a light-emitting element, and a substrate connected to the light-emitting element. The power feeding member supplies power to the light source part. The heat dissipation member is mounted with the light source part. The socket is assembled on the rear side opposite to the front surface of the heat dissipation member mounted with the light source part. In the vehicle lighting unit, the substrate and the power feeding member are electrically connected by the substrate connection part. The heat dissipation member integrally has an extension support unit that supports at least the substrate connection part in placement in a front-rear direction of the heat dissipation member.

The present subject matter relates to headlight bulb devices, systems, and methods for vehicle headlights in which a headlight bulb assembly includes a bulb mounting collar configured to be engaged with a bulb base cavity in a housing of the vehicle headlight; a bulb body comprising one or more LED element, wherein the bulb body is configured to be coupled to the bulb mounting collar, and wherein the bulb body is rotatable to a range of angular positions relative to the bulb mounting collar; and a tension spring configured to apply a biasing force that acts to retain one or both of the bulb mounting collar or the bulb body in a desired position with respect to the bulb base cavity.

A vehicle luminaire according to an exemplary embodiment includes: a socket; and a light-emitting module that is provided in on one end side of the socket, and includes only three light-emitting elements. When viewing the vehicle luminaire from a direction along a central axis, light-emitting surfaces of the three light-emitting elements have an approximately rectangular shape or an approximately square shape. At the inside of an approximately rectangular luminous region with the central axis set as the center, the three light-emitting elements are provided in parallel in a row in a direction in which short sides of the luminous region face each other.

A vehicle luminaire according to an exemplary embodiment includes: a socket; and a light-emitting module that is provided in on one end side of the socket, and includes only three light-emitting elements. When viewing the vehicle luminaire from a direction along a central axis, light-emitting surfaces of the three light-emitting elements have an approximately rectangular shape or an approximately square shape. At the inside of an approximately rectangular luminous region with the central axis set as the center, the three light-emitting elements are provided in parallel in a row in a direction in which short sides of the luminous region face each other.

A LED lamp for use in a lamp housing of a vehicle comprises a bulb body and a base. The bulb body comprises one or more light-emitting diodes. The base comprises a mounting portion and a heatsink portion. The mounting portion comprises a collar configured to attachably accept one end of the bulb body, and one or more mounting tabs configured to engage with the lamp housing to secure the LED lamp in place within the lamp housing. The mounting portion is integrally formed with the heatsink portion, and the bulb body is configured to be rotatable within the collar about a longitudinal axis of the LED lamp.