Cooling systems for vehicle headlights

A headlight bulb assembly comprising:

• a circuit board comprising first and second sides;
• a first light emitting diode (LED) on the first side of the circuit board and a second LED on the second side of the circuit board;
• a shell at least partially enclosing the circuit board, wherein the shell defines a sealed interior fan housing, an air intake, and an air exhaust;
• and
• a circulator fan in the sealed interior fan housing, wherein the circulator fan is configured to draw air into the sealed interior fan housing through the air intake, and wherein the circulator fan is configured to expel the air from the sealed interior fan housing through the air exhaust;
• wherein circulator fan comprises a plurality of vanes extending in a vertical plane and a centrifugal fan motor configured to rotate the plurality of vanes about a vertical axis.

A headlight bulb assembly comprising:

• a circuit board comprising first and second sides;
• a first light emitting diode (LED) on the first side of the circuit board and a second LED on the second side of the circuit board;
• a shell at least partially enclosing the circuit board, wherein the shell defines a sealed interior fan housing, an air intake, and an air exhaust;
• and
• a circulator fan in the sealed interior fan housing, wherein the circulator fan is configured to draw air into the sealed interior fan housing through the air intake, and wherein the circulator fan is configured to expel the air from the sealed interior fan housing through the air exhaust;
• wherein the shell defines first and second apertures in the shell and the first LED is oriented to face out through the first aperture and the second LED is oriented to face out through the second aperture.

A headlight bulb assembly comprising:

• a circuit board comprising first and second sides;
• a first light emitting diode (LED) on the first side of the circuit board and a second LED on the second side of the circuit board;
• a shell at least partially enclosing the circuit board, wherein the shell defines a sealed interior fan housing, an air intake, and an air exhaust;
• a circulator fan in the sealed interior fan housing, wherein the circulator fan is configured to draw air into the sealed interior fan housing through the air intake, and wherein the circulator fan is configured to expel the air from the sealed interior fan housing through the air exhaust;
• a headlight housing enclosing the shell and the first and second LEDs and the circulator fan;
• and
• a headlamp front cover lens coupled to the headlight housing, creating a sealed interior volume inside the headlight housing.

A headlight bulb assembly comprising:

• a circuit board comprising first and second sides;
• a first light emitting diode (LED) on the first side of the circuit board and a second LED on the second side of the circuit board;
• a shell at least partially enclosing the circuit board, wherein the shell defines a sealed interior fan housing, an air intake, and an air exhaust;
• a circulator fan in the sealed interior fan housing, wherein the circulator fan is configured to draw air into the sealed interior fan housing through the air intake, and wherein the circulator fan is configured to expel the air from the sealed interior fan housing through the air exhaust;
• and
• a shade cup under the circuit board and the first and second LEDs and oriented to reflect light upwards to a reflector.