Patent ID: 8424744
Filing Date: 2013-04-23
Classification: B23K,F21K,H01L,Y10S,Y10T

Abstract:
1. A method of manufacturing an LED light bar, the method comprising: providing a reflow oven and a clamping device mounted on a transmitting belt of the reflow oven, the reflow oven comprising a heating area and a cooling area in an interior thereof; providing a semi-finished LED light bar comprising a printed circuit board and a plurality of LEDs arranged on the print circuit board with solder paste applied between the LEDs and the printed circuit board, and mounting the semi-finished LED light bar in the clamping device; and starting the reflow oven and thus the transmitting belt carrying the clamping device and the semi-finished LED light bar moving together to pass through the reflow oven, whereby the solder paste is firstly melted in the heating area and then solidified in the cooling area to fix the LEDs on the printed circuit board to form the LED light bar; wherein when the clamping device and the semi-finished LED light bar reach a first predetermined position before the heating area, the clamping device is at a clamping state for maintaining relative positions between the LEDs and the printed circuit board; and when the clamping device and the semi-finished LED light bar reach a second predetermined position after the cooling area, the clamping device is changed to a releasing state such that the LED light bar can be removed from the clamping device; wherein the clamping device comprises a supporting plate, a plurality of connecting plates extending upward from the supporting plate and a plurality of clamping arms connected with the connecting plates, respectively, the supporting plate, the connecting plates and the clamping arms cooperatively defining a receiving space for receiving the semi-finished LED light bar therein; and wherein a plurality of protruding blocks and a plurality of recesses corresponding to the protruding blocks respectively are formed between the connecting plates and the clamping arms, the clamping arms connected with the connecting plates via the protruding blocks engaged in the recesses, the clamping arms being moveable with respect to the connecting plates via the protruding blocks sliding along the recesses.