Vehicle lighting unit
AssigneeStanley Electric Co., Ltd.
InventorYasushi Yatsuda
Life of this patent
Estimating the term…
Abstract
A vehicle lighting unit can not only promote the dissipation of heat from a semiconductor light emitting device and a drive circuit for the device, both of which are the heat generation members, but also improve its maintenance workability. The vehicle lighting unit can include a light source module having a module main body. The module main body can include first and second semiconductor light emitting devices, drive circuits configured to drive and control the first and second semiconductor light emitting devices, and a heat dissipation fin for dissipating heat generated by the semiconductor light emitting devices and the drive circuits. Both the semiconductor light emitting devices and the drive circuit are directly attached to the module main body.
Claims25
A vehicle lighting unit, comprising:
- a semiconductor light emitting device;
- a drive circuit configured to drive and control the semiconductor light emitting device;
- and
- a heat dissipation member to which both the semiconductor light emitting device and the drive circuit are directly attached in order to dissipate heat generated by the semiconductor light emitting device and the drive circuit,
- wherein the drive circuit is sealed with a resin.
A vehicle lighting unit, comprising:
- a semiconductor light emitting device;
- a drive circuit configured to drive and control the semiconductor light emitting device;
- and
- a heat dissipation member to which both the semiconductor light emitting device and the drive circuit are directly attached in order to dissipate heat generated by the semiconductor light emitting device and the drive circuit, wherein
- the heat dissipation member includes
- a front surface with a recessed portion having a bottom,
- an extension portion integrally formed with and extending forward from the bottom of the recessed portion, and
- a rear surface integrally formed with the extension portion and including a heat dissipation fin integrally formed in the rear surface,
- the semiconductor light emitting device is attached to the extension portion, and
- the drive circuit is attached within the recessed portion.
A vehicle lighting unit, comprising:
- a semiconductor light emitting device;
- a drive circuit configured to drive and control the semiconductor light emitting device;
- and
- a heat dissipation member to which both the semiconductor light emitting device and the drive circuit are directly attached in order to dissipate heat generated by the semiconductor light emitting device and the drive circuit, wherein
- the heat dissipation member includes an extension portion extending forward,
- the semiconductor light emitting device includes a first semiconductor light emitting device configured to form a low-beam light distribution pattern, and a second semiconductor light emitting device configured to form a high-beam light distribution pattern, and
- the extension portion has an upper surface to which the first semiconductor light emitting device is attached and a lower surface to which the second semiconductor light emitting device is attached.
A vehicle lighting unit, comprising:
- a light source module having a first semiconductor light emitting device and a second semiconductor light emitting device, a drive circuit configured to drive and control the first and second semiconductor light emitting devices, a heat dissipation member configured to dissipate heat generated by the first and second semiconductor light emitting devices and the drive circuit, and an extension portion extending forward and having an upper surface to which the first semiconductor light emitting device is attached and a lower surface to which the second semiconductor light emitting device is attached in order to cause the first and second semiconductor light emitting devices to form independent light distribution patterns;
- an optical system configured to project light emitted from the first and second semiconductor light emitting devices forward;
- and
- a holding member configured to hold the optical system and detachably hold the light source module at a rear end of the holding member.
Dependencies are inferred from the claim text.