A vehicle lighting unit includes: a heat sink (12); a light emitting element disposed in the heat sink (12); and a reflector that is disposed above the light emitting element, and reflects emitted light emitted forward from the light emitting element. The heat sink (12) includes a base portion (22) for disposing the light emitting element on a pedestal portion (21); and a fin portion (23) that is disposed on a back surface of the base portion (22), and radiates heat generated by the light emitting element. The back surface of the base portion (22) is inclined with respect to the pedestal portion (21). In the heat sink (12), a thickness of the base portion (22) is thicker on a lower side of the light emitting element than on a rear side of the base portion (22).

A headlight (1) includes a lamp unit (20) including: light sources (52R,52G,52B) that emit laser light; and phase modulation elements (54R,54G,54B) that diffract the laser light emitted from the light sources (52R,52G,52B) with a phase modulation pattern that is changeable, and emit light of a light distribution pattern based on the phase modulation pattern. The lamp unit (20) adjusts a total luminous flux amount of light emitted from the lamp unit (20) according to the light distribution pattern.

A vehicular headlight includes: a first light emitting element (55) that emits a first light (L1); a second light emitting element (63) that emits a second light (L2); a shade (43); and a projection lens (20), in which an upper surface of the shade (43) has a first reflection surface (43a) that reflects another part of the first light (L1) to the projection lens (20) side, and a lower surface of the shade has a second reflection surface (43b) that reflects another part of the second light (L2) to the projection lens (20) side, and a front end (43c) of the shade (43) has a step (43cs) in an up and down direction corresponding to a shape of a cut line of a light distribution pattern of the low beam.

A vehicle headlamp (1) includes: a light source (52R, 52G, 52B) that emits light having a predetermined wavelength; a light distribution pattern forming optical system (56R, 56G, 56B) that includes a collimator lens (53R, 53G, 53B) and a diffraction grating (54R, 54G, 54B) that change a traveling direction of at least some of pieces of light emitted from the light source (52R, 52G, 52B), and emits light (L.sub.R, L.sub.G, L.sub.B) having a predetermined light distribution pattern; and a vibration imparting unit (57R, 57G, 57B) that relatively vibrates the light source (52R, 52G, 52B) and the diffraction grating (54R, 54G, 54B).

A vehicle lamp (1) includes: a light source (51) that emits light of a predetermined wavelength; a diffractive optical element (53) that diffracts light emitted from the light source (51) into a predetermined light distribution pattern; a wavelength conversion element (55) in which the light distribution pattern is projected, and that widens a wavelength band of incident light and emits the light; and a projection lens (56) that projects the light distribution pattern projected on the wavelength conversion element (55).

A vehicle lamp is disposed. The vehicle lamp includes a light source, a glass disposed in front of the light source, a housing configured to support the light source and the glass and form an appearance, a thermoelectric element unit configured to generate cold wind and hot wind by introducing external air of the housing, a first flow path configured to introduce one of the cold wind and the hot wind generated by the thermoelectric element unit into the housing, and a second flow path configured to discharge the other one of the cold wind and the hot wind to outside of the housing, the thermoelectric element unit includes a first part configured to be connected to the first flow path and generate one of cold air and hot air, a second part configured to be connected to the second flow path and generate the other one of the cold air and the hot air, a body configured to partition an arrangement space of the first part and the second part and in which an opening is formed on an upper surface, and a fan configured to be disposed on the opening of the body and introduce the air in a direction from an upper portion to a lower portion, and the thermoelectric element unit is positioned on an upper end of an external rear surface of the housing.

A vehicle lamp is disposed. The vehicle lamp includes a light source, a glass disposed in front of the light source, a housing configured to support the light source and the glass and form an appearance, a thermoelectric element unit configured to generate cold wind and hot wind by introducing external air of the housing, a first flow path configured to introduce one of the cold wind and the hot wind generated by the thermoelectric element unit into the housing, and a second flow path configured to discharge the other one of the cold wind and the hot wind to outside of the housing, the thermoelectric element unit includes a first part configured to be connected to the first flow path and generate one of cold air and hot air, a second part configured to be connected to the second flow path and generate the other one of the cold air and the hot air, a body configured to partition an arrangement space of the first part and the second part and in which an opening is formed on an upper surface, and a fan configured to be disposed on the opening of the body and introduce the air in a direction from an upper portion to a lower portion, and the thermoelectric element unit is positioned on an upper end of an external rear surface of the housing.

A regulating assembly for a light source and a lighting and/or signaling device, an adjusting device, a lighting device and a motor vehicle, a bezel device, and a gas guiding device and a lighting and/or signaling device containing the same are provided in the present disclosure. The regulating assembly and the adjusting device are used to adjust the lighting and/or signaling module in the lighting device provided in the housing of the lighting device. The bezel device and the gas guiding device may be used for the lighting and/or signaling device. The regulating assembly comprises a supporting frame coupled in a displaceable manner to the light source, a fixed regulating portion which is rotatable, and horizontal and vertical regulating portions in a form of a ball-headed screw-thread part. The adjusting device includes an adjusting screw, a slider and a base; and the bezel device includes a top bezel having a flat plate-like body and a main bezel including a first bezel and a second bezel. The gas guiding device comprises a gas channel and a flow guiding component for guiding an air flow through one or more readily condensable locations of the lighting and/or signaling device.

A headlight unit including a cooling circuit provided with at least two air circulation pipes linked to at least a same device for generating an air flow, particularly a fan, and provided with at least one element for varying a proportion of the air flow, which proportion is distributed into each of the at least two pipes.

A headlight unit including a cooling circuit provided with at least two air circulation pipes linked to at least a same device for generating an air flow, particularly a fan, and provided with at least one element for varying a proportion of the air flow, which proportion is distributed into each of the at least two pipes.