Tandem SMD (Surface Mount Device) luminous lamp strip

Abstract

The utility model discloses a serial connection type SMD (Surface Mount Device) luminous lamp strip, which solves the problems of high requirement on installation position and relatively low installation efficiency of the existing luminous lamp strip, and adopts the technical scheme that the serial connection type SMD luminous lamp strip comprises an SMD, the SMD comprises a printed circuit arranged on the back surface and a plurality of LED (Light Emitting Diode) lamp beads arranged on the front surface, pins of the LED lamp beads are electrically connected with the printed circuit, the LED lamp beads are electrically connected through the printed circuit, the SMD patch is arranged in a cavity of a light-transmitting outer sheath, a wire is arranged in the outer sheath in the length direction of the outer sheath in a penetrating mode, the wire is electrically connected with the printed circuit, and the wire is communicated with an external power source through a connector clip and used for supplying power to the LED lamp beads. Two SMD patches are arranged in the cavity, the back faces of the two SMD patches are attached together, and the two SMD patches extend in the length direction of the outer sheath.

Description

Technical Field

[0001] The utility model relates to an SMD patch light-emitting strip, in particular to a series-connected SMD patch light-emitting strip. Background Art

[0002] Festival lights have various structural forms, including strip-shaped and hanging-shaped ones. Flexible light-emitting strips are increasingly widely used because of their diverse light-emitting forms, high usage safety, and strong adaptability to places. "SMD" is the abbreviation of surface mount technology, referring to a technology in which electronic components are directly attached to the surface of a circuit board. In lamps, SMD usually refers to surface-mounted LED lamp beads, which are small, power-saving, and long-lasting, and can provide high brightness and good color performance, and are widely used in LED lamps. The structure of the existing flexible light-emitting strip mainly includes long strip-shaped SMD patches, and a transparent outer sheath is wrapped around the outer periphery of the SMD patches. The LED lamp beads on the SMD patches are generally arranged in a row along the length direction of the flexible light-emitting strip. When the light-emitting strip is externally connected to a power supply, the LED lamp beads will be powered on and light up, emitting corresponding monochromatic light. According to the arrangement of the LED lamp beads emitting different monochromatic lights in the linear direction and the control of the two-way power conduction mode of the circuit board, the entire light-emitting strip presents a corresponding light-emitting effect when powered on.

[0003] Chinese patent document (CN 217441435U) discloses a parallel-connected flexible light-emitting strip, which solves the problem that the light-emitting form of the existing light-emitting strip is relatively single after being powered on and lit, and the effect of setting off the atmosphere of the place is relatively poor. The technical solution adopted: a parallel-connected flexible light-emitting strip, including a circuit board, the circuit board includes a substrate, and a plurality of separated conductors are formed on one surface of the substrate, and the conductors are in contact with one surface of the substrate. It is characterized in that a plurality of conductors form a unit, and the conductors in a unit are arranged in two rows in the length direction of the substrate to form two connection rows. Both connection rows include the same number of conductor groups connected in series, and an LED or a resistor is connected between two adjacent conductors in the conductor group. The number and relative positions of the LEDs and resistors in different conductor groups in a connection row are the same; the same-side ends of the two connection rows are connected together, and the two ends of the connection row are respectively connected to two power lines.

[0004] In this kind of light-emitting strip, only LED lamp beads are arranged on one side of the substrate, and the substrate is usually opaque. When using this kind of light-emitting strip to decorate a place, it is necessary to pay attention to the orientation of the LED lamp bead side of the light-emitting strip facing outward. Due to the flexible characteristics of the light-emitting strip and the relatively long length of the light-emitting strip required during the place decoration, when the light-emitting strip is not well fixed, it is inevitable that some LED lamp beads face away from the place, which will affect the decoration effect of the light-emitting strip on the place. Summary of the Utility Model

[0005] The utility model provides a series-connected SMD patch light-emitting strip. The installation requirements of this strip are low, and it can basically ensure that the side of the strip facing the venue emits light, achieving a good dressing effect for the venue.

[0006] To solve the above technical problems, the technical solution of the utility model is as follows: A series-connected SMD patch light-emitting strip includes SMD patches. The SMD patch includes a printed circuit arranged on the back and a plurality of LED lamp beads arranged on the front. The pins of the LED lamp beads are electrically connected to the printed circuit, and the LED lamp beads are electrically connected to each other through the printed circuit. The SMD patch is arranged in the cavity of a light-transmitting outer sheath. A wire is arranged along the length direction of the outer sheath, and the wire is electrically connected to the printed circuit. The wire is connected to an external power supply through a plug-in connector to supply power to the LED lamp beads. Its characteristic lies in that two SMD patches are arranged in the cavity, the backs of the two SMD patches are abutted against each other, and the two SMD patches extend along the length direction of the outer sheath.

[0007] The whole of this light-emitting strip is flexible and can be coiled together. When decorating a venue, only need to extend and arrange it along the route to be decorated. After being powered on and lit, the overall light-emitting effect is good. Two SMD patches are arranged in one light-emitting strip. The two SMD patches are relatively thin and are generally the same length as the strip. The backs of the two SMD patches are abutted against each other, and the LED lamp beads on the SMD patches face the outside of the strip. When selling, only need to directly cut it according to the size purchased by the user. Need to additionally configure a pin-type plug-in connector and a power cord. The metal pins on the plug-in connector are inserted into the position of the wire in the outer sheath to achieve electrical connection with the wire, and an external power supply is connected to power on the strip. Generally, a controller needs to be arranged on the power cord, and the lighting mode of the LED lamp beads is controlled through the buttons on the controller.

[0008] Furthermore, the two SMD patches are connected together, and the connection part between them is located at the same side edge of the two SMD patches. The two SMD patches are integrally formed by longitudinally folding and abutting the two SMD patches together from the middle position in the transverse direction. This facilitates the preparation of the strip and improves the production efficiency.

[0009] Furthermore, there are a plurality of the connection parts, and these connection parts are arranged at intervals along the length direction of the SMD patch. The multiple connection parts connect the two SMD patches into one body. Generally, the connection parts are formed by cutting at the middle position in the transverse direction of the two connected SMD patches.

[0010] Further, the length of the connecting part is less than the length of the interval between adjacent connecting parts. At this interval, the two SMD patches are separated. Being separated at this interval facilitates the folding of the two SMD patches, enabling the backs of the two SMD patches in the light strip to fully lean against each other, resulting in good integrity of the light strip and facilitating its preparation and shaping.

[0011] Further, the LED lamp beads are arranged in groups, with several of the LED lamp beads forming a group, and each group of LED lamp beads is arranged along the width direction of the SMD patch. With this arrangement of the LED lamp beads, the luminous intensity after being powered on and lit is high, effectively ensuring the luminous effect of the light strip after being powered on.

[0012] Further, the positions of the lamp beads on the two SMD patches correspond to each other. The two SMD patches are prepared simultaneously, which is convenient for mechanized manufacturing, has high production efficiency, and facilitates the wiring of the SMD patch and the wire inside the outer sheath.

[0013] Further, the LED lamp beads forming a group are connected in parallel, and several groups of LED lamp beads are connected in series to form a large group. Each large group of LED lamp beads is connected in series with a resistor and then electrically connected to the wire. This arrangement of the LED lamp beads can well adapt to the electrical connection with the wire and facilitates the wiring during the preparation process of the light strip.

[0014] Compared with the prior art, the technical effect of the present utility model is that since two SMD patches are provided in the outer sheath of the light strip, and the LED lamp beads on the two SMD patches all face the outside of the light strip, after being powered on and lit, both sides of the light strip can emit light. Therefore, when arranging the light strip, there is no need to consider the front and back of the light strip, and only need to arrange the light strip along the desired route, which can well adapt to the decoration and arrangement of different places and has high arrangement efficiency of the light strip. After the light strip is powered on and lit, it can basically ensure that the luminous effect of the light strip is consistent everywhere, thus making the decoration effect of the light strip on the place good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : Front view structure diagram of the SMD patch in this light-emitting light strip.

[0016] Figure 2 : Back unfolded view of the two SMD patches in this light-emitting light strip.

[0017] Figure 3 : Equivalent circuit diagram of a large group of LED lamp beads in this light-emitting light strip.

[0018] Figure 4 : End face structure diagram of this light-emitting light strip.

[0019] In the figure, 1 is a substrate; 2 is an LED lamp bead; 3 is a resistor; 4 is a printed circuit; 5 is an etching line; 6 is a connection part; 7 is a cutting seam; 8 is a wire; 9 is an outer sheath; 10 is a groove. Specific embodiments

[0020] Combined with the accompanying drawings of the specification, this series-connected SMD patch light-emitting strip is of a flexible structure. After being prepared, it is usually sold in a coiled state. The structure of this light-emitting strip includes SMD patches, combined Figure 1 , 2 . The SMD patch includes a thin substrate 1. A printed circuit 4 is provided on the back of the substrate 1 to form an FPC circuit board, and a number of LED lamp beads 2 are provided on the front of the substrate 1. Among them, Figure 1 shows the arrangement of the LED lamp beads 2 on the front of the SMD patch. As shown in the figure, every three LED lamp beads 2 form a group. Of course, the LED lamp beads 2 can also be two, four, or five to form a group. Due to size limitations, generally no more than five LED lamp beads 2 are included in a group. Of course, a single LED lamp bead 2 can also be used as a group. These LED lamp beads 2 are arranged in a row in the length direction of the substrate 1. Each group of LED lamp beads 2 is evenly distributed at equal intervals along the transverse direction of the SMD patch, and there is an interval between adjacent groups of LED lamp beads 2. Figure 1 shows that the four groups of LED lamp beads 2 that are close to each other are the same, and they can emit monochromatic light of the same color. The other four groups of LED lamp beads 2 emit monochromatic light of another color, such as red, blue, or green. Figure 1 , 2 only partially shows the structure diagram of the SMD patch. In fact, both ends of the SMD patch can continue to extend along its length direction.

[0021] Figure 2 shows the printed circuit 4 on the back of the SMD patch. For the purpose of distinction, one of the large printed circuits 4 is filled with hatching, and in fact, the appearances of the two large printed circuits 4 are the same. The two printed circuits 4 are separated by the etching line 5. Some waist-shaped patterns in the figure are also the etching line 5. These etching lines 5 are formed by etching during the preparation of the substrate 1 of the SMD patch. The LED lamp beads 2 provided on the front of the SMD patch are processed by a mounter. After the assembly of the LED lamp beads 2 is completed, the pins of the LED lamp beads 2 are electrically connected to the printed circuit 4, and the LED lamp beads 2 are electrically connected to each other through the printed circuit 4.

[0022] The SMD patch is arranged in the cavity of the light-transmitting outer sheath 9. The outer sheath 9 is generally integrally injection-molded from transparent PVC on the outer periphery of the prepared SMD patch. The outer sheath 9 can also be integrally injection-molded from milky white PVC. Figure 4As shown, the cross-section of the outer sheath 9 is rectangular, and a groove 10 is formed on the inner surface of the middle part of one wide side of the outer sheath 9. The groove 10 extends along the length direction of the outer sheath 9 and is of the same length as the outer sheath 9. The groove 10 is formed during the injection molding process of the outer sheath 9.

[0023] A wire 8 is disposed through the outer sheath 9 along its length direction, and the wire 8 is of the same length as the outer sheath 9. The wire 8 is formed by winding a plurality of metal wires together. The wire 8 is electrically connected to the printed circuit 4 through the metal wires, and the wire 8 is connected to an external power supply through a connector for supplying power to the LED lamp beads 2.

[0024] Figure 4 As shown, two SMD patches are disposed in each cavity, and the backs of the two SMD patches are abutted against each other. The two SMD patches both extend along the length direction of the outer sheath 9. Combining Figure 2 , the two SMD patches are connected together, and the connection part 6 between them is located at the same side edge of the two SMD patches. When preparing the SMD patches, a plurality of SMD patches are processed on a whole substrate 1. Adjacent two SMD patches are cut out from the substrate 1, and are longitudinally folded along the transverse midline positions of these two SMD patches, so that the backs of the two SMD patches are abutted against each other. In order to ensure that the backs of the two SMD patches are fully abutted, a plurality of spaced cutting slits 7 are longitudinally processed at the transverse midline positions of the two SMD patches. The connection part 6 where the two SMD patches are connected is formed between two adjacent cutting slits 7. At the position of the cutting slit 7, the two SMD patches are separated. Generally, the length of the cutting slit 7 is several times that of the connection part 6. For clear display, in Figure 2 , the width of the cutting slit 7 is enlarged for display. In actual production, the cutting slit 7 is generally cut by a disc blade, and the width of the cutting slit 7 can be ignored. After the two SMD patches are unfolded, the existence of the cutting slit 7 cannot be obviously seen. The printed circuits 4 between the two SMD patches are separated by the etching lines 5 and are not electrically connected at the printed circuit 4. They are respectively electrically connected to the wire 8 through the metal wires as required. When electrically connecting with the wire 8 by the metal wires, the positive and negative electrodes of the corresponding printed circuits 4 in the two SMD patches are respectively and simultaneously electrically connected to the wire 8, so that a double loop is formed between the two metal wires, and the two corresponding printed circuits 4 are in a parallel relationship.

[0025] The LED lamp beads 2 in each SMD patch are all set in groups. Figure 1Three LED lamp beads 2 are shown as a group, and these three LED lamp beads 2 are evenly distributed at intervals in the horizontal direction of the SMD patch. Since the preparation template units of the two SMD patches are the same and they are prepared and formed simultaneously in a standardized manner, the positions of the LED lamp beads 2 on the two SMD patches correspond to each other.

[0026] Combined with Figure 3, in each SMD patch, the LED lamp beads 2 that form a group are connected in parallel. As shown in the figure, eight groups of LED lamp beads 2 form a large group. The LED lamp beads 2 of each large group are connected in series with three resistors 3 and then electrically connected to the wire 8 through metal wires.

Claims

1. A series-connected SMD patch light-emitting strip, comprising SMD patches. The SMD patch includes a printed circuit provided on the back and a plurality of LED lamp beads provided on the front. The pins of the LED lamp beads are electrically connected to the printed circuit, and the LED lamp beads are electrically connected to each other through the printed circuit. The SMD patch is disposed in a cavity of a light-transmitting outer sheath. A wire is disposed through the outer sheath along its length direction, and the wire is electrically connected to the printed circuit. The wire is communicated with an external power supply through a plug-in connector for supplying power to the LED lamp beads. It is characterized in that, Two SMD patches are arranged in the cavity, and the backs of the two SMD patches are abutted against each other, and the two SMD patches extend along the length direction of the outer sheath.

2. The serial-connected SMD patch light-emitting lamp strip according to claim 1, characterized in that, The two SMD patches are connected together, and the connection part between them is located at the same side edge of the two SMD patches.

3. The series-connected SMD patch light-emitting lamp strip according to claim 2, wherein, There are several connection parts, and these connection parts are arranged at intervals along the length direction of the SMD patch.

4. The series-connected SMD patch light-emitting lamp strip according to claim 3, wherein, The length of the connection part is less than the length of the interval between adjacent connection parts, and at this interval, the two SMD patches are separated.

5. The series-connected SMD patch light-emitting strip according to any one of claims 1 to 4, characterized in that, The LED beads are arranged in groups, several of the LED beads form a group, and each group of LED beads is arranged along the width direction of the SMD patch.

6. The series-connected SMD patch light-emitting strip according to claim 5, characterized in that, The positions of the beads on the two SMD patches correspond to each other.

7. The series-connected SMD patch light-emitting lamp strip according to claim 5, wherein, The LED beads that form a group are connected in parallel, and several groups of LED beads are connected in series to form a large group. Each large group of LED beads is connected in series with a resistor and then electrically connected to the wire.

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