LED lamp with four-wire double-sided PCB
View Patent ↗An LED lamp with a four-wire double-sided PCB includes a PCB, wherein the PCB is provided with a first LED luminous body and a second LED luminous body, respectively at the central regions of the obverse and reverse sides of the PCB to realize 360° light emission; the PCB is also sequentially provided with four electrodes around any one of the two central regions, wherein two electrodes are respectively configured to be connected with different signal terminals of the two LED luminous bodies; the remaining two electrodes are respectively configured to be connected with different power supply terminals of the two LED luminous bodies. The LED lamp provided by the present disclosure can emit light on both sides, and truly realize 360° light emission.
1 . An LED lamp with a four-wire double-sided PCB, comprising:
a PCB, wherein
the PCB is provided with a first LED luminous body and a second LED luminous body at a first central region of an obverse side of the PCB and a second central region of a reverse sides of the PCB in a surface-mount manner, respectively to realize 360° light emission;
the PCB is also sequentially provided with a first electrode, a second electrode, a third electrode opposed to the first electrode and a fourth electrode around each of the first central region and the second central region; and
the PCB has a main body and the main body of the PCB is square and has arc-shaped missing corners on the periphery; and the second and fourth electrodes have chamfered corners near the first and the second central regions; each of the first and third electrodes corresponds to two pads; and each of the second and fourth electrodes corresponds to one pad; and the first to fourth electrodes are arranged on the PCB in a clockwise direction; the two pads of the first electrode and the third electrode, and the second electrode and the fourth electrode are symmetrically disposed on a same centerline of the PCB;
wherein
the first electrode and the third electrode are respectively configured to be connected with signal terminals of the two LED luminous bodies, and each of the signal terminals comprises a signal input DIN terminal, and a signal output DOUT terminal;
the first electrode is connected with one signal terminal of the first LED luminous body, and connected with one signal terminal of the second LED luminous body;
the third electrode is connected with the other signal terminal of the first LED luminous body, and connected with the other signal terminal of the second LED luminous body;
the second electrode is connected with one power terminal of the first LED luminous body, and be connected with one power terminal of the second LED luminous body;
the fourth electrode is connected with the other power terminal of the first LED luminous body, and connected with the other power terminal of the second LED luminous body;
the second electrode and the fourth electrode are respectively configured to be connected with power supply terminals of the two LED luminous bodies and each of the power supply terminals includes a positive terminal and a negative terminal;
the first LED luminous body and the second LED luminous body are in a parallel relationship;
the LED lamp is able to form front-and-rear cascaded lamps with other LED lamps with the same structure through the first electrode to the fourth electrode and is arranged on a linear conductor with at least three strands of wires and divides the linear conductor into two parts;
a first linear conductor and a second linear conductor respectively pass through a lower surface of one side of the PCB and are respectively connected with the second electrode and the fourth electrode;
a third linear conductor is cut into two sections in advance, and the two sections of the third linear conductor pass through the lower surface of the same side of the PCB through which the first linear conductor and the second linear conductor pass, and are respectively connected with the first electrode and the third electrode;
a first broken linear conductor formed after cutting extends from an exterior of the PCB into the lower surface of one side of the PCB and is blocked by one edge of the LED luminous body arranged on the side of the PCB;
a second broken linear conductor formed after cutting extends outward from the other edge of the LED luminous body arranged on the side of the PCB to an exterior of the PCB; and
the first and second LED luminous bodies, the first, second, third and fourth electrodes, and the linear conductors passing through the lower surface of one side of the PCB and connected with the corresponding electrodes are subjected to injection molding on the obverse and reverse sides of the PCB to form an injection molding lamp.
2 . The LED lamp according to claim 1 , wherein
at least any one of the first electrode, the second electrode, the third electrode and the fourth electrode are arranged on the PCB in a manner of penetrating through the obverse and reverse sides of the PCB; or,
at least any one of the first electrode, the second electrode, the third electrode and the fourth electrode are arranged on one side of the PCB in a manner of not penetrating through the obverse and reverse sides of the PCB.
3 . The LED lamp according to claim 2 , wherein
under the condition that there is an electrode arranged on one side of the PCB in a manner of not penetrating through the obverse and reverse sides of the PCB, the electrode is connected to the LED luminous body arranged on the other side of the PCB by means of a via.
4 . The LED lamp according to claim 1 , wherein each pad of first and the third electrode has a dimension of 1.4 mm by 1.0 mm, and each pad of the second and fourth electrode has a dimension of 2 mm by 1.5 mm.