Patent ID: 9651732
Date: 2017-05-16
CPC Classifications: F21K,F21Y,G02B

Claim:
1. A light source module comprising; a circuit board; a light source, the light source electrically coupled to the circuit board and having a first light emerging face; a light guide plate, the light guide plate positioned close to the light source and having a light incident face, the light incident face and the first light emerging face cooperatively forming an acute angle; a reflective piece located on one side of the light guide plate proximate to the circuit board; a diffusion plate located on another side of the light guide plate away from the circuit board; and a frame fixedly holding the circuit board, the light guide plate, the reflective piece, and the diffusion plate, respectively; wherein, light emitted from the light source is guided by the light guide plate, reflected by the reflective piece and diffused by the diffusion plate to form a uniform planer light source; and wherein the light source comprises at least one LED electrically coupled to the circuit board and at least two soldering tins located between the circuit board and the at least one LED; the circuit board further comprises at least two bonding pads close to the at least one LED; each LED comprises an anode pin, a cathode pin and two sides, the first light emitting face is on one side of each LED, and the anode pin and the cathode pin is on the opposite side of each LED facing away the first light emitting face; each LED is electrically coupled to the at least two soldering tins through the anode pin and the cathode pin; one of the at least two soldering tins is soldered to the anode pin and one of the at least two bonding pads; and the other soldering tin of the at least two soldering tins is soldered to the cathode pin and the other bonding pad of the at least two bonding pads; and the side of each LED positioning the anode pin and the cathode pin of each LED is perpendicular to the two bonding pads.