Large power LED lamp having automatic temperature control function

• Main Authors: LYU LINGLING, WANG RUIQING, YUAN JINZHEN, LI DEGANG, WANG QIFANG, DONG CUNGUO
• Format: Patent
• Language: English
• Published: 15.07.2015
• Subjects: ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY

The utility model discloses a large power LED lamp having an automatic temperature control function. The large power LED lamp comprises a temperature switch control circuit, an LED driving circuit, and an LED lamp group. The LED driving circuit adopts an MT7285 chip as a core device, and the output end of the temperature switch control circuit is connected with the ADJ pin of the MT7285 chip, and in addition, the input end of the LED lamp group is connected with the control port of the MT7285 chip. The large power LED lamp is advantageous in that the stepped temperature switch control circuit is additionally provided with the ADJ pin, and the LED working current can be reduced in a stepped manner along with the rising of the temperature in the LED lamp, and therefore the light-emitting strength of the LED cannot be excessively affected by the LED, the temperature rising of the LED lamp can be effectively controlled, and the service lifetime of the LED lamp can be greatly prolonged.