LED lamp strip power supply connecting structure with built-in safety bridge rectifier

Abstract

An LED lamp strip power supply connecting structure with a built-in safety bridge rectifier comprises an LED lamp strip, a lamp strip connector and a power line, two electric shock terminals are arranged in the LED lamp strip, and two wires are arranged in the power line; a lamp strip groove is formed in one end of the lamp strip connector, a wiring cavity is formed in the other end of the lamp strip connector, two contact pins are arranged in the lamp strip groove, the LED lamp strip is fixed in the lamp strip groove, and the head ends of the contact pins are inserted into the LED lamp strip and are in electric contact with two electric shock terminals of the LED lamp strip respectively; a bridge rectifier is arranged in the wiring cavity, a rectifier bridge and a safety device are packaged in the bridge rectifier, the rectifier bridge comprises two input ends and two output ends, and two input end wire clamps electrically connected with the two input ends respectively and two output end wire clamps electrically connected with the two output ends respectively are arranged outside the bridge rectifier. Two input end wire clamps of the bridge rectifier respectively clamp two wires of the power line, and two output end wire clamps of the bridge rectifier are electrically connected with the tail ends of the two contact pins. The utility model has the advantages of simple manufacture, small volume and concise appearance.

Description

Technical Field

[0001] The utility model relates to a lighting fixture, in particular to an LED light strip power supply connection structure with a built-in safety bridge. Background Art

[0002] High-voltage LED light strips include a flexible circuit board, LED lamp beads mounted on the flexible circuit board, and a sheath covering the flexible circuit board. The LED lamp beads are connected in series to form multiple light-emitting modules with an operating voltage of approximately 220V. The high-voltage LED light strip is connected to the mains via a power connector. Since the LED lamp beads are powered by DC, a bridge rectifier and a fuse resistor are required on the power connector. Figure 9 The power connector of an existing high-voltage LED light strip includes a power cord 01, with a light strip connector 02 at one end and a plug 03 at the other. A circuit board 04 is located in the middle of the power cord, on which a bridge rectifier 05 and a fuse resistor 06 are mounted. A power housing 07 is also injection-molded around the outer surface of the circuit board 04, forming an integral structure with the outer shell of the power cord 01. Because the bridge rectifier 05 and fuse resistor 06 need to be electrically connected to the power cord 01 through the circuit board 04, and the circuit board 04 also requires the power housing 07 for protection, the power connector of existing high-voltage LED light strips suffers from disadvantages such as complex manufacturing processes, large size, and irregular appearance. Utility Model Content

[0003] Based on this, it is necessary to provide an LED light strip power connection structure with a built-in fuse bridge pile, which has a simple manufacturing process, a small size, and a simple appearance, in order to solve the existing technical problems.

[0004] In order to solve the problems of the prior art, the utility model discloses a power connection structure of an LED light strip with a built-in safety bridge stack, comprising an LED light strip, a light strip connector and a power cord, wherein the LED light strip comprises a circuit board, on which LED lamp beads and two electric contact terminals are provided, and two wires are provided in the power cord; a light strip groove is provided at one end of the light strip connector, and a wiring cavity is provided at the other end; two pins are also provided in the light strip groove, the LED light strip is fixed in the light strip groove, the head ends of the pins are inserted into the LED light strip and electrically contact with its two electric contact terminals respectively; a bridge stack is provided in the wiring cavity, a rectifier bridge and a safety device are encapsulated in the bridge stack, the rectifier bridge comprises two input ends and two output ends, two input end wire clamps electrically connected to the two input ends respectively and two output end wire clamps electrically connected to the two output ends respectively are provided outside the bridge stack, the two input end wire clamps of the bridge stack respectively clamp the two wires of the power cord, and its two output end wire clamps are electrically connected to the tail ends of the two pins.

[0005] The beneficial effects of the present invention are as follows: since the safety device is encapsulated inside the bridge accumulator and an input-end wire clamp and an output-end wire clamp are provided outside the bridge accumulator, the bridge accumulator can directly clamp the wire through the wire clamp, and there is no need to use a circuit board for electrical connection. The circuit board on the power connector can be omitted, and the process of welding the bridge accumulator, the safety device and the wire on the circuit board is omitted. At the same time, the power casing is also omitted, and the manufacture of the power connector is simpler. Since the bridge accumulator is small in size, it can be set on the light strip connector, and there is no need to set a power casing in the middle of the power cord. The design of the power connector is simpler, the size is smaller, and the appearance is more beautiful.

[0006] The present invention can be further improved as follows: the two output-end wire clamps of the bridge stack are directly clamped at the tail ends of the two pins, or the tail ends of the two pins are connected to flexible wires, and the two output-end wire clamps of the bridge stack are clamped on the flexible wires. Two mounting holes are provided between the light strip slot and the wiring cavity, and a sleeve is provided in the mounting hole. The head end of the sleeve is retracted into the mounting hole, and the tail end thereof is electrically connected to the two output-end wires of the bridge stack. The two pins are inserted into the fixed part, and the tail ends of the two pins are respectively inserted into the two sleeves. The two output-end wire clamps of the bridge stack are directly clamped at the tail end of the sleeve, or the tail end of the sleeve is connected to a flexible wire, and the two output-end wire clamps of the bridge stack are clamped on the flexible wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the internal structure of the bridge pile of the utility model.

[0008] Figure 2 This is a schematic diagram of the external structure of the bridge pile of the utility model.

[0009] Figure 3 It is a structural diagram of a high-voltage LED light strip.

[0010] Figure 4 This is a schematic diagram of the external structure of one of the power connector structures of the present utility model.

[0011] Figure 5 This is a partial cross-sectional view of one of the power connector structures of the present invention.

[0012] Figure 6 This is a partial cross-sectional view of one of the power connection structures of the present utility model.

[0013] Figure 7 This is a partial cross-sectional view of the second power connector structure of the present invention.

[0014] Figure 8 This is a partial cross-sectional view of the second power connection structure of the present invention.

[0015] Figure 9Schematic diagram of the structure of an existing power connector. DETAILED DESCRIPTION

[0016] In order to further understand the features, technical means, specific purposes and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. The description of the positional relationship between the components of the present invention (including but not limited to up, down, left, right, inside, outside, head end, tail end, etc.) is based on the position state of the components shown in the accompanying drawings as a reference. Its purpose is to facilitate the description and understanding of the mechanical structure of the components and does not represent an absolute limitation on the scope of protection of the present invention. Those skilled in the art will understand that when the placement direction of the components in the drawing changes, the description of the positional relationship may change, but the mechanical structure of the components does not change in essence.

[0017] refer to Figure 1 and Figure 2 . A bridge stack 1 with a built-in safety device includes a bracket 11, in which a rectifier bridge 12 and a safety device 13 are encapsulated. The rectifier bridge 12 is a full-wave rectifier bridge composed of four diodes 12d, which includes two input terminals 12a and two output terminals 12b, and the safety device 13 is arranged on one of the output terminals 12b. The safety device 13 can be a fuse or a fuse resistor. Two input terminal wire clamps 14a electrically connected to the two input terminals 12a of the rectifier bridge 12 and two output terminal wire clamps 14b electrically connected to the two output terminals 12b of the rectifier bridge 12 are arranged outside the bracket 11. The wire clamp 14a / 14b is a U-shaped structure, which is an integral structure stamped from the same metal plate as the input terminal 12a and the output terminal 12b. The four wire clamps 14a / 14b can be distributed on both sides or the same side of the bracket 11.

[0018] refer to Figure 3 . The high-voltage LED light strip 2 applicable to the present utility model includes a flexible circuit board 21, a plurality of LED lamp beads 22 mounted on the flexible circuit board 21, electric shock terminals 23 arranged on both sides of the LED lamp beads 22 on the flexible circuit board, and a flexible outer skin 24 wrapping the flexible circuit board 21. The operating voltage of the LED lamp beads 22 is 3V, and the plurality of LED lamp beads 22 and a plurality of resistors are connected in series to form a light-emitting module that operates at about 220V. A high-voltage LED light strip can include a plurality of the light-emitting modules, and the plurality of light-emitting modules are connected in parallel to the positive and negative total power supply circuits, and the two electric shock terminals 23 are electrically connected to the positive and negative total power supply circuits, respectively.

[0019] refer to Figure 4 and Figure 5. A LED light strip power connector 3 with a built-in fuse bridge stack includes a power cord 31, one end of the power cord 31 is connected to a power plug 32, and the other end is connected to a light strip connector 33. A light strip groove 331 is provided at one end of the light strip connector 33, and a wiring cavity 332 is provided at the other end. The light strip groove 331 has an upper opening and an end opening, a slot cover 333 is provided on one side of the upper opening, a card hole 334 is provided on the slot cover 333, and a buckle 335 that cooperates with the card hole is provided on the other side of the upper opening, and the slot cover 333 is fastened by the card hole 334 and the buckle 335. Two pins 34 are provided between the light strip groove 331 and the wiring cavity 332, the head end of the pin 34 extends into the light strip groove 331, and the tail end extends into the wiring cavity 332. The bridge rectifier 1 is disposed within the wiring cavity 332. The two input-end clamps 14a of the bridge rectifier 1 respectively clamp the two wires 311 of the power cord 31 and electrically connect thereto. The two output-end clamps 14b of the bridge rectifier 1 respectively clamp the tail ends of the two pins 34 and electrically connect thereto. When the two output-end clamps 14b of the bridge rectifier 1 directly clamp the pins 34, the spacing between the two output-end clamps 14b needs to be preset to be the same as the spacing between the two pins 34, or redundancy can be provided by increasing the slot width of the clamps 14b, which simplifies assembly. Alternatively, the pins 34 can be connected to a flexible conductor at their tail ends, and then the two output-end clamps 14b of the bridge rectifier 1 are clamped onto the flexible conductor for electrical connection. In this way, the spacing between the two output-end clamps 14b of the bridge rectifier 1 does not need to correspond to the spacing between the two pins 34. The bridge rectifier 1 can be adapted for LED light strips of varying widths, offering greater versatility.

[0020] The manufacturing method of the power connector 3 is: first, the two wires 311 of the power cord 31 are respectively placed in the two input end wire clamps 14a of the bridge stack 1, and the tail ends of the two pins 34 are respectively placed in the two output end wire clamps 14b of the bridge stack 1, and then the wire clamps 14a / 14b are punched out by a punching machine to clamp the wires 311 and the pins 34; then, the wiring cavity 332 and the light strip groove 331 are injection-molded around the bridge stack 1 and the pins 34.

[0021] refer to Figure 6 The power connector 3 is connected as follows: first, insert the high-voltage LED light strip 2 from the end opening of the light strip slot 331 to the bottom of the light strip slot 331. At this time, the head ends of the two pins 34 are inserted from the end of the high-voltage LED light strip between its outer skin 24 and the flexible circuit board 21, and are electrically connected to the two contact terminals 23 on the flexible circuit board 21 respectively; finally, fasten the slot cover 333 to fix the high-voltage LED light strip 2 in the light strip slot 331.

[0022] refer to Figure 7 and Figure 8, the power connector 3 of the high-voltage LED light strip can be further improved to provide two mounting holes 35 between the light strip groove 331 and the wiring cavity 332, and to provide a sleeve 36 in the mounting hole, with the head end of the sleeve 36 retracted into the mounting hole 35, and the tail end of the sleeve 36 extending into the wiring cavity 332. The two input-end clamps 14a of the bridge stack 1 respectively clamp the two conductors 311 of the power cord 31 and electrically connect them thereto, and the two output-end clamps 14b of the bridge stack 1 respectively clamp the tail ends of the two sleeves 36 and electrically connect them thereto. The two pins 34 are inserted into the fixing portion 341, and the fixing portion 341 makes the distance between the head ends of the two pins 34 equal to the distance between the two wiring terminals 23 on the high-voltage LED light strip, and the distance between the tail ends is equal to the distance between the two sleeves 36. Reference Figure 8 The connection method of the power connector 3 is as follows: first, insert the head ends of the two pins 34 between the outer skin 24 of the end of the high-voltage LED light strip and the flexible circuit board 21, so that they are electrically connected to the two electric contact terminals 23 respectively; then insert the tail ends of the two pins 34 into the two sleeves 36 respectively, and the two are electrically contacted through interference fit; finally, fasten the slot cover 333 to fix the high-voltage LED light strip 2 in the light strip slot 331. Because the head end of the sleeve 36 is retracted into the mounting hole 35, even if the power cord is connected to the mains during the installation process, there is no risk of electric shock during live operation, and the construction safety index is higher. Similarly, the tail end of the sleeve 36 can also be connected to a flexible wire, which is then clamped on the two output end wire clamps 14b of the bridge stack 1.

[0023] The beneficial effects of the present invention are as follows: since the safety device is encapsulated inside the bridge accumulator and an input-end wire clamp and an output-end wire clamp are provided outside the bridge accumulator, the bridge accumulator can directly clamp the wire through the wire clamp, and there is no need to use a circuit board for electrical connection. The circuit board on the power connector can be omitted, and the process of welding the bridge accumulator, the safety device and the wire on the circuit board is omitted. At the same time, the power casing is also omitted, and the manufacture of the power connector is simpler. Since the bridge accumulator is small in size, it can be set on the lamp strip connector, and there is no need to set a power casing in the middle of the power cord. The design of the power connector is simpler, the size is smaller, and the appearance is more beautiful.

[0024] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A power connection structure for an LED light strip with a built-in fuse bridge, comprising an LED light strip, a light strip connector, and a power cord. The LED light strip includes a circuit board on which LED lamp beads and two electric contact terminals are disposed. The power cord includes two conductors, characterized in that: A light strip groove is provided at one end of the light strip connector, and a wiring cavity is provided at the other end; two pins are also provided in the light strip groove, and the LED light strip is fixed in the light strip groove, and the head ends of the pins are inserted into the LED light strip and electrically contacted with its two contact terminals respectively; a bridge stack is provided in the wiring cavity, and a rectifier bridge and a safety device are encapsulated in the bridge stack, and the rectifier bridge includes two input ends and two output ends, and two input end wire clamps electrically connected to the two input ends and two output end wire clamps electrically connected to the two output ends are provided outside the bridge stack, and the two input end wire clamps of the bridge stack respectively clamp the two wires of the power cord, and its two output end wire clamps are electrically connected to the tail ends of the two pins.

2. The LED light strip power connection structure with a built-in fuse bridge according to claim 1, characterized in that: The two output end wire clamps of the bridge stack are directly clamped at the tail ends of the two pins.

3. The LED light strip power connection structure with a built-in fuse bridge according to claim 1, characterized in that: The tail ends of the two pins are connected with flexible wires, and the two output end wire clamps of the bridge stack are clamped on the flexible wires.

4. The LED light strip power connection structure with a built-in fuse bridge according to claim 1, characterized in that: Two mounting holes are provided between the light strip groove and the wiring cavity. A sleeve is provided in the mounting hole. The front end of the sleeve is retracted into the mounting hole, and the rear end thereof is electrically connected to the two output end lines of the bridge stack. The two pins are inserted into the fixing part, and the rear ends of the two pins are respectively inserted into the two sleeves.

5. The LED light strip power connection structure with a built-in fuse bridge according to claim 4, characterized in that: The two output end wire clamps of the bridge stack are directly clamped at the tail end of the sleeve.

6. The LED light strip power connection structure with a built-in fuse bridge according to claim 4, characterized in that: The tail end of the sleeve is connected to a flexible wire, and the two output end wire clamps of the bridge stack are clamped on the flexible wire.

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