Vehicle lamp
AssigneeKoito Manufacturing Co., Ltd.
InventorsMasayasu Ito, Fuminori Shiotsu
Life of this patent
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Abstract
A vehicle lamp includes: N semiconductor light sources, wherein N is an integer of 1 or more; M fans configured to cool the N semiconductor light sources, wherein M is an integer of 1 or more; N current supply units configured to supply first current to the N semiconductor light sources, respectively; and a control unit configured to receive electric power supplied from an electric power source and supply second current to the N current supply units. The control unit includes: N switch elements that correspond to the N semiconductor light sources; M switch elements that correspond to the M fans; and a control circuit configured to control fan drive current supplied to the fans through the switch elements and the second current. The fans are coupled to the control unit.
Claims4
A vehicle lamp comprising:
- N semiconductor light sources, wherein N is an integer of 1 or more;
- M fans configured to cool the N semiconductor light sources, wherein M is an integer of 1 or more;
- N current supply units configured to supply first current to the N semiconductor light sources, respectively;
- and
- a control unit configured to receive electric power from an electric power source and to supply second current to the N current supply units, the control unit comprising:
- N switch elements that correspond to the N semiconductor light sources;
- M switch elements that correspond to the M fans;
- and
- a control circuit configured to control fan drive current supplied to the fans through the switch elements and the second current,
- wherein the fans are coupled to the control unit.
Dependencies are inferred from the claim text.