CN211372002U

CN211372002U - Flexible LED lamp area

Info

Publication number: CN211372002U
Application number: CN201922289434.9U
Authority: CN
Inventors: 蒙兴春; 肖文玉
Original assignee: Guangdong Baijialiang Photoelectric Technology Co ltd
Current assignee: Guangdong Baijialiang Photoelectric Technology Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-08-28
Anticipated expiration: 2029-12-17

Abstract

The utility model relates to a flexible LED lamp strip, which comprises a sealing soft colloid and LED light source strips, wherein the sealing soft colloid wraps the LED light source strips; the LED light source strip comprises a flexible FPC circuit board, a flip chip LED and a fluorescent coating layer; the flexible FPC circuit board is strip-shaped, a first surface of the flexible FPC circuit board is provided with a plurality of positive and negative electrode welding spots which are arranged along the length direction of the flexible FPC circuit board, and each positive and negative electrode welding spot is welded with a flip chip LED; the flexible FPC circuit board also comprises a plurality of welding plates arranged at two ends of the flexible FPC circuit board and between the two ends of the flexible FPC circuit board; the fluorescent coating layer is a hemispherical lens which respectively coats each flip chip LED, or the fluorescent coating layer is a circular arc-shaped packaging strip which extends along the length direction of the flexible FPC circuit board and coats a plurality of flip chip LEDs. The utility model discloses a flexible LED lamp area has the luminous angle of light and the wide, no blue light of direction and leaks and simple structure's advantage.

Description

Flexible LED lamp area

Technical Field

The utility model relates to the technical field of lighting technology, concretely relates to flexible LED lamp area.

Background

The existing LED lamp strip is coated with the fluorescent glue in a rectangular shape or is not coated with the fluorescent glue, so that the light emitting angle and direction of a chip LED are not wide enough, blue light is leaked, and the applicability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a luminous angle of light and direction are wide, do not have blue light to leak and simple structure's LED lamp area to prior art not enough.

In order to realize the purpose of the utility model, the utility model provides a flexible LED lamp strip, which comprises a sealing soft colloid and LED light source strips, wherein the sealing soft colloid wraps the LED light source strips; the LED light source strip comprises a flexible FPC circuit board, a flip chip LED and a fluorescent coating layer; the flexible FPC circuit board is strip-shaped, a first surface of the flexible FPC circuit board is provided with a plurality of positive and negative electrode welding spots which are arranged along the length direction of the flexible FPC circuit board, and each positive and negative electrode welding spot is welded with a flip chip LED; the flexible FPC circuit board also comprises a plurality of welding plates arranged at two ends of the flexible FPC circuit board and between the two ends of the flexible FPC circuit board; the fluorescent coating layer is a hemispherical lens which respectively coats each flip chip LED, or the fluorescent coating layer is a circular arc-shaped packaging strip which extends along the length direction of the flexible FPC circuit board and coats a plurality of flip chip LEDs.

The further technical scheme is that the soft sealing glue body comprises a light-reflecting soft glue and a light-diffusing soft glue, the light-diffusing soft glue is arranged above the first surface, and the light-reflecting soft glue covers the flexible FPC circuit board from the lower part of the first surface and is connected with the light-diffusing soft glue.

The further technical scheme is that the light-reflecting soft rubber comprises a groove, and the flexible FPC circuit board is matched with the groove.

The further technical scheme is that every two flip chip LEDs are in one group, the flip chip LEDs in the group are connected in parallel, and the groups are connected in series.

The LED light source strip further comprises an IC resistor, and the IC resistor is connected to the flexible FPC circuit board.

The further technical scheme is that a welding plate is arranged at intervals of the welding spots of the anode and the cathode with even numbers, the welding plate is a copper patch, and the welding plate is provided with a shearing position.

The further technical scheme is that the distance between a first welding plate arranged at the first end of the flexible FPC circuit board and a second welding plate arranged at the second end of the flexible FPC circuit board is 50mm to 3000mm, and a middle welding plate is arranged at every 50mm interval.

The further technical scheme is that the flexible FPC circuit board comprises an etching circuit, and the welding plate and the positive and negative electrode welding spots are connected with the etching circuit.

The further technical scheme is that the flip chip LED is welded on the flexible FPC circuit board through solder paste or soldering flux.

The further technical scheme is that double-faced adhesive tape is adhered to the back of the flexible LED lamp strip, or the flexible LED lamp strip is provided with a wire clamp and the back of the flexible LED lamp strip is adhered with the double-faced adhesive tape.

The further technical scheme is that the reflective soft glue comprises a high-reflection coating, and the reflectivity of the high-reflection coating is more than 0.9.

The further technical proposal is that the light diffusion soft glue is made of semitransparent light guide materials.

Compared with the prior art, the utility model discloses can gain following beneficial effect:

(1) the utility model provides a LED lamp strip, which comprises a sealing soft colloid and an LED light source strip, wherein the sealing soft colloid coats the LED lamp strip, so that the whole LED lamp strip uniformly emits light; the LED light source strip comprises a flip chip LED welded on the flexible FPC circuit board and a fluorescence coating layer for packaging the flip chip LED, and the fluorescence coating layer is a hemispherical lens or an arc-shaped packaging strip, so that the light emitting angle and direction of the flip chip LED are wider, no blue light is leaked, and the applicability is higher. The utility model discloses a LED lamp area simple structure, convenient to use.

(2) The utility model discloses a flexible FPC circuit board in LED lamp area can be connected with IC resistor, and IC resistor can control current and pass through, reduces the pressure drop, can prevent the lamp of dying simultaneously, and when certain LED chip broke down, the short circuit phenomenon can not take place in whole root lamp area.

(3) The utility model discloses a welding plate and positive negative pole solder joint in LED lamp area can link to each other with the etching circuit of flexible FPC circuit board, realize electrically conductive the connection. Be different from traditional lamp area inside core wire that needs to be connected, the circuit is complicated easily to break down, the utility model discloses a LED lamp area welded plate is more convenient on the one hand to be connected with the wire, improves stability, and on the other hand can cut wantonly, can control the length of LED light source strip, easy to assemble.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the flexible LED strip of the present invention.

Fig. 2 is the structural schematic diagram of the sealing soft colloid in the first embodiment of the flexible LED strip.

Fig. 3 is the utility model discloses LED light source strip structure chart in the first embodiment of flexible LED lamp area.

Fig. 4 is a cross-sectional view of a LED light source strip in the first embodiment of the flexible LED light strip of the present invention.

Fig. 5 is a schematic structural diagram of a second embodiment of the flexible LED strip of the present invention.

Detailed Description

The present invention will be described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

First embodiment of Flexible LED Lamp strip

As shown in fig. 1 to 4, the present embodiment provides a flexible LED strip. It includes sealed soft colloid 100 and LED light source strip 200, and sealed soft colloid 100 wraps up LED light source strip 200.

As shown in fig. 1, 3 and 4, the LED light source 200 includes a fluorescent coating layer 210, an IC resistor 220, a flexible FPC circuit 230, a solder board 240 and a flip chip LED 250. The flexible FPC board 230 is in the form of a strip, the flexible FPC board 230 includes an etching circuit, and the soldering board 240 and the positive and negative electrode pads are connected to the etching circuit 230, and specifically, the flexible FPC board 230 may be formed by etching a circuit on a flexible FPC substrate and plating a layer of copper and white glue. The number of the positive and negative welding points is multiple, the positive and negative welding points are arranged along the length direction of the flexible FPC circuit board 230, a flip chip LED 250 is welded on each positive and negative welding point, specifically, the flip chip LED 250 is welded on the flexible FPC circuit board 230 through solder paste or soldering flux, the welded substrate is placed into reflow soldering for curing, and the flip chip LED 250 and the welding structure thereof have the advantages of high-density combination, difficulty in falling and good heat dissipation effect. Every two flip-chip LEDs 250 are in one group, the flip-chip LEDs 250 in the group are connected in parallel, and the groups of the flip-chip LEDs 250 are connected in series. The flip chip LED 250 may not only be a white chip, but also may be a light strip emitting light of different color temperatures and different colors by using different chips.

The soldering plates 240 are copper patches, the number of the soldering plates 240 is multiple, the soldering plates 240 are arranged at two ends of the flexible FPC 230 and between the two ends, specifically, one soldering plate 240 is arranged at every interval of positive and negative soldering points with an even number value, in this embodiment, one soldering plate 240 is arranged at every interval of positive and negative soldering points with 6 soldering flip chip LEDs 250, and each soldering plate 240 is composed of two patches. Fig. 1, 3 and 4 only schematically show a segment with solder pads 240 at both ends, and in practice the LED light source bar 200 may have a larger length, for example, a flexible FPC board 230 with soldered flip-chip LEDs 250 attached to the outside of the solder pads 240 is shown. The cutting position is arranged on the welding plate 240 and can be marked by a mark 241, the cutting position can be arranged in the middle of the welding plate 240, and the two cut-apart LED light sources 200 are provided with the welding plate 240 at the cutting opening. In this embodiment, the distance between the soldering boards 240 disposed at the two ends of the flexible FPC board 230 may be 50mm to 3000mm, the distance is a range that can be cut, the soldering boards 240 are disposed in the middle of the flexible FPC board 230 at every 50mm interval, and the length of the LED strip may be controlled by cutting. In the present embodiment, the role of the welding plate 240 is two: on one hand, the wire can be connected with the wire; on the other hand, the length of the LED light source strip 200 can be arbitrarily cut, so that the LED light strip can be mounted at any position.

The IC resistor 220 is connected to a flexible FPC board 230. This embodiment has adopted IC resistor 220, compares with traditional lamp area, has improved holistic reliability. On one hand, the IC resistor 220 can control the current, avoid the passing of large current and reduce the voltage drop; on the other hand, IC resistor 220 can protect whole root lamp area, prevents to die the lamp, and when certain LED chip broke down, whole root lamp area can not take place the short circuit phenomenon. The IC resistor 220 may be connected in series to the lamp load circuit.

The phosphor coating layer 210 is a hemispherical lens formed of phosphor paste. In this embodiment, a dispensing and ball-drawing coating method may be used to perform fluorescent coating, so as to obtain the hemispherical fluorescent coating layer 210, which is different from a conventional rectangular coating layer or no coating, and the hemispherical fluorescent coating layer 210 of this embodiment may enable the light emitting angle and direction of the LED chip to be wider, thereby improving the light emitting efficiency and luminous flux.

As shown in fig. 1 and 2, the soft sealing gel 100 includes a soft light reflecting gel 110 and a soft light diffusing gel 120. The light diffusion soft glue 120 is arranged above the first surface, and the light reflection soft glue 110 covers the flexible FPC circuit board 230 from the lower part of the first surface and is connected with the light diffusion soft glue 120. The reflective soft glue 110 can be made of white shading material, which is beneficial to improving the reflectivity. Specifically, in this embodiment, the reflective soft glue 110 includes a high-reflection coating, and the reflectivity of the high-reflection coating is above 0.9. The light diffusion soft rubber 120 is made of semitransparent light guide materials, so that the LED light source strip 200 can uniformly emit light, and the light emitting effect is improved.

The light reflecting soft glue 110 is provided with two parallel grooves 111, the flexible FPC circuit board 230 of the LED light source strip 200 is connected with the grooves 111 in a matched mode, and the grooves 111 can play a role in supporting the LED light source strip 200.

In addition, the back of the flexible LED lamp strip 200 can be adhered with double faced adhesive tapes, so that the lamp strip can be adhered at will, and the flexible LED lamp strip 200 can be further provided with a wire clamp for fixing the lamp strip.

Second embodiment of Flexible LED Lamp strip

As shown in fig. 5, the flexible LED strip structure of this embodiment is substantially the same as that of the first embodiment, except that the fluorescent coating layer 210 of this embodiment is an arc-shaped package strip extending along the length direction of the flexible FPC circuit 230 and covering the plurality of flip-chip LEDs 250. The arc-shaped packaging strip-shaped fluorescent coating layer 210 can be obtained through a bracing process, so that the coating of the whole filament is realized, the light-emitting angle and direction of the LED chip can be wider, and the light-emitting efficiency and the luminous flux are improved.

Finally, it should be emphasized that the above-described embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible LED lamp area which characterized in that:

the LED lamp comprises a sealing soft colloid and an LED light source strip, wherein the sealing soft colloid wraps the LED light source strip;

the LED light source strip comprises a flexible FPC circuit board, a flip chip LED and a fluorescent coating layer;

the flexible FPC circuit board is strip-shaped, a plurality of positive and negative electrode welding spots arranged along the length direction of the flexible FPC circuit board are arranged on the first surface of the flexible FPC circuit board, and each positive and negative electrode welding spot is welded with one flip chip LED; the flexible FPC circuit board also comprises a plurality of welding plates arranged at two ends of the flexible FPC circuit board or between the two ends of the flexible FPC circuit board and the two ends of the flexible FPC circuit board;

the fluorescent coating layer is a hemispherical lens which respectively coats the flip chip LEDs, or the fluorescent coating layer is an arc-shaped packaging strip which extends along the length direction of the flexible FPC circuit board and coats the flip chip LEDs.

2. A flexible LED strip according to claim 1, wherein:

the flexible sealing glue body comprises a light-reflecting soft glue and a light-diffusing soft glue, the light-diffusing soft glue is arranged above the first surface, and the light-reflecting soft glue covers the flexible FPC circuit board from the lower part of the first surface and is connected with the light-diffusing soft glue.

3. A flexible LED strip according to claim 2, wherein:

the light-reflecting soft rubber comprises a groove, and the flexible FPC circuit board is matched with the groove.

4. A flexible LED strip according to any one of claims 1 to 3, wherein:

every two flip chip LEDs are in one group, the flip chip LEDs in the group are connected in parallel, and the groups are connected in series.

5. A flexible LED strip according to claim 4, wherein:

6. A flexible LED strip according to claim 4, wherein:

the welding plate is arranged at every interval of the welding spots of the anode and the cathode with even numbers, the welding plate is a copper patch, and the welding plate is provided with a shearing position.

7. A flexible LED strip according to claim 6, wherein:

the setting is in the first welded plate of the first end of flexible FPC circuit board is in with the setting distance is 50mm to 3000mm between the second welded plate of flexible FPC circuit board second end, and every interval 50mm is provided with an intermediate welding board.

8. A flexible LED strip according to any one of claims 1 to 3, wherein:

the flexible FPC circuit board comprises an etching circuit, and the welding plate and the positive and negative electrode welding spots are connected with the etching circuit;

and the flip chip LED is welded on the flexible FPC circuit board through solder paste or soldering flux.

9. A flexible LED strip according to any one of claims 1 to 3, wherein:

the back of the flexible LED lamp strip is adhered with a double-faced adhesive tape, or the flexible LED lamp strip is provided with a wire clamp and the back of the flexible LED lamp strip is adhered with a double-faced adhesive tape.

10. A flexible LED strip according to claim 2 or 3, wherein:

the reflective soft rubber comprises a high-reflection coating, and the reflectivity of the high-reflection coating is more than 0.9;

the light diffusion soft glue is made of semitransparent light guide materials.