CN214198252U

CN214198252U - Red, green, blue and white four-in-one dimming flexible lamp strip

Info

Publication number: CN214198252U
Application number: CN202120478774.0U
Authority: CN
Inventors: 梁勇; 邓启爱; 陈应伟
Original assignee: Shenzhen Haobing Photoelectric Technology Co ltd
Current assignee: Shenzhen Haobing Photoelectric Technology Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-09-14
Anticipated expiration: 2031-03-05

Abstract

The utility model provides a red green blue white four unification flexible light area of adjusting luminance, include: FPCB flexible substrate and LED chipset, positive negative pole conducting wire is all prefabricated with the both sides at the back to FPCB flexible substrate's front, positive negative pole conducting wire includes first circuit, second circuit, third circuit, fourth circuit and fifth circuit, the LED chipset set up in FPCB flexible substrate's central point puts, LED chip in the LED chipset is linear arrangement, and with positive negative pole conducting wire is connected. The utility model discloses can effectively reduce the thermal resistance, still through the design of sharing anodal circuit or sharing negative pole circuit altogether, and then can improve production efficiency well, the utility model discloses reliable performance is good, long service life.

Description

Red, green, blue and white four-in-one dimming flexible lamp strip

Technical Field

The utility model relates to a flexible lamp area especially relates to a red green blue white four unification flexible lamp area of adjusting luminance.

Background

The LED is widely used as a fourth generation green lighting source, and the market of the flexible LED light bar as a product that can be bent and attached at will is growing in recent years, and the flexible light bar product with adjustable light is popular with the market due to the advantages of good light type, easy design and the like. The light source with adjustable light can be used in special occasions with adjustable color temperature, such as markets, counters, coffee shops and the like. The LED lamp can be used for dimming and mixing colors, has multiple functions, and can be arranged at the front end of the LED lighting in the comprehensive intelligent direction. The existing packaging method for achieving the light source effect mainly adopts an external SMD device combination circuit or a parallel colloid packaging technology to realize: 1. the dense forward-mounted SMD is arranged at intervals, the gold wire connection reliability is low, the light is in a point shape, the light shape is poor, and the reliability is low; 2. the dimming effect is realized by adopting parallel lines, but the existing mode has the defects that the width of the board is more than 20mm, the colors of light for lighting four sides are inconsistent (yin-yang color phenomenon), the dimming and light mixing effects are poor, and the like. Therefore, none of the above methods can meet the market demand well.

Disclosure of Invention

The utility model aims to solve the technical problem that a red green blue white four-in-one light modulation flexible lamp belt with high production efficiency, low thermal resistance and good reliability needs to be provided.

To this, the utility model provides a four unification flexible light areas of adjusting luminance of red green blue white, include: FPCB flexible substrate and LED chipset, positive negative pole conducting wire is all prefabricated with the both sides at the back to FPCB flexible substrate's front, positive negative pole conducting wire includes first circuit, second circuit, third circuit, fourth circuit and fifth circuit, the LED chipset set up in FPCB flexible substrate's central point puts, LED chip in the LED chipset is linear arrangement, and with positive negative pole conducting wire is connected.

The utility model discloses a further improvement lies in, first circuit, second circuit, fourth circuit and fifth circuit are blue light negative pole conducting wire, green glow negative pole conducting wire, ruddiness negative pole conducting wire and white light negative pole conducting wire respectively, the third circuit is common positive pole conducting wire; or the first line, the second line, the fourth line and the fifth line are respectively a blue light positive electrode conductive circuit, a green light positive electrode conductive circuit, a red light positive electrode conductive circuit and a white light positive electrode conductive circuit, and the third line is a common negative electrode conductive circuit.

The utility model discloses a further improvement lies in, first circuit, second circuit, fourth circuit and fifth circuit top-down arrange in proper order.

The utility model discloses a further improvement lies in, be provided with blue light circuit pad, green glow circuit pad, common polarity circuit pad, red light circuit pad and white light circuit pad on first circuit, second circuit, third circuit, fourth circuit and the fifth circuit respectively.

The utility model discloses a further improvement lies in, FPCB flexible substrate's central point puts and is provided with many pairs of circuit node, every pair of circuit node respectively with the positive pole and the negative pole of LED chip are connected.

The utility model discloses a further improvement lies in, circuit via hole is provided with at the both ends of circuit node, circuit via hole includes blue light circuit via hole, green glow circuit via hole, ruddiness circuit via hole and white light circuit via hole; the front line and the back line of the FPCB flexible substrate are connected through the circuit via hole.

The utility model discloses a further improvement lies in, still include first current-limiting resistance, second current-limiting resistance, third current-limiting resistance and fourth current-limiting resistance, first current-limiting resistance is connected with the first circuit, and with blue light circuit via hole is connected; the second current limiting resistor is connected with the second line and the green light circuit via hole; the third current limiting resistor is connected with the fourth circuit and is connected with the red light circuit via hole; the fourth current limiting resistor is connected with the fifth circuit and the white light circuit via hole.

The utility model discloses a further improvement lies in, the LED chip group has set gradually ruddiness LED chip, green glow LED chip, blue light LED chip and white light LED chip, ruddiness LED chip, green glow LED chip, blue light LED chip and the even dislocation set of white light LED chip.

The utility model discloses a further improvement lies in, be provided with white cofferdam around ruddiness LED chip.

The utility model discloses a further improvement lies in, LED chip in the LED chipset pass through the pad fixed set up in FPCB flexible substrate's central point puts.

Compared with the prior art, the beneficial effects of the utility model reside in that: positive and negative conductive circuits are prefabricated on the front side and the back side of the FPCB flexible substrate, so that the connection stability and reliability are improved by prefabricating the positive and negative conductive circuits, and the heat resistance is reduced by realizing the conduction through a front circuit and a back circuit; on this basis, positive negative pole conducting wire includes first circuit, second circuit, third circuit, fourth circuit and fifth circuit, the LED chipset set up in FPCB flexible substrate's central point puts, LED chip among the LED chipset is linear arrangement, and with positive negative pole conducting wire is connected, and then makes red green blue white four unification flexible light strip of adjusting luminance can realize sharing anodal circuit or sharing negative pole line's design to improve production efficiency, and reliable performance is good, long service life.

Drawings

Fig. 1 is a schematic diagram of a front side circuit structure according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a back side circuit structure according to an embodiment of the present invention.

Detailed Description

Preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, this example provides a red, green, blue and white four-in-one dimming flexible light strip, including: FPCB flexible substrate 1 and LED chipset, positive negative pole conducting wire is all prefabricated with the both sides at the back in FPCB flexible substrate 1's the front, positive negative pole conducting wire includes first circuit 11, second circuit 12, third circuit 13, fourth circuit 14 and fifth circuit 15, the LED chipset set up in FPCB flexible substrate 1's central point puts, LED chip among the LED chipset is including ruddiness LED chip 2, green glow LED chip 3, blue light LED chip 4 and the white light LED chip 5 that sets gradually, ruddiness LED chip 2, green glow LED chip 3, blue light LED chip 4 and white light LED chip 5 are linear arrangement, and with positive negative pole conducting wire is connected.

Preferably, the red LED chip 2, the green LED chip 3, the blue LED chip 4 and the white LED chip 5 are disposed in a staggered manner. The LED chip is preferably an LED flip chip, namely red, green, blue and white flip chip groups are fixed in equally distributed circuits of the FPCB flexible substrate 1, the LED flip chip groups are preferably arranged to sequentially circulate according to the R \ G \ B \ W sequence, the circuits at the central position on the FPCB flexible substrate 1 are filled with colloid covering the chip groups, and the colloid is filled with milky powder to increase the light diffusion uniformity.

The LED flip chip is preferably adopted by the LED chip, the electrode direction of the chip is downward, the chip can be directly welded on a circuit board, welding can be realized without gold wires, the investment of production equipment is reduced, the heat conduction area between the LED flip chip and the strip-shaped substrate is increased, the improvement of heat conduction efficiency and heat dissipation effect can be further facilitated, the light attenuation of the LED chip is reduced, and the service life is prolonged. The LED lamp strip adopts an integral type packaging structure, reduces the production process of packaging the LED chips into the LED lamp beads, reduces the production cost, and simplifies the manufacturing process of the whole dimming flexible lamp strip.

In this embodiment, the first line 11, the second line 12, the fourth line 14, and the fifth line 15 are respectively a blue light negative conductive circuit, a green light negative conductive circuit, a red light negative conductive circuit, and a white light negative conductive circuit, the third line 13 is a common positive conductive circuit, at this time, four paths of LED chip sets including the red light LED chip 2, the green light LED chip 3, the blue light LED chip 4, and the white light LED chip 5 share a common positive electrode, and each color of the corresponding negative electrode is a single conductive circuit. Or the first line 11, the second line 12, the fourth line 14 and the fifth line 15 are respectively a blue light anode conductive circuit, a green light anode conductive circuit, a red light anode conductive circuit and a white light anode conductive circuit, the third line 13 is a common cathode conductive circuit, at this time, four paths of LED chip sets including the red light LED chip 2, the green light LED chip 3, the blue light LED chip 4 and the white light LED chip 5 share a cathode, and each color of the corresponding anode is a single conductive circuit. As shown in fig. 1 and 2, in this embodiment, four lines, namely, the first line 11, the second line 12, the fourth line 14, and the fifth line 15, are arranged in a straight line and are uniformly staggered, so as to avoid color crosstalk after lighting. Preferably, the first line 11, the second line 12, the fourth line 14 and the fifth line 15 are arranged in sequence from top to bottom.

In this example, the first line 11, the second line 12, the third line 13, the fourth line 14, and the fifth line 15 are respectively provided with a blue circuit pad 21, a green circuit pad 22, a common polarity circuit pad 23, a red circuit pad 24, and a white circuit pad 25. Realize connecting through the pad, can increase the convenient degree of concatenation and the maneuverability in flexible lamp area.

As shown in fig. 1 and fig. 2, a plurality of pairs of circuit nodes are disposed at a central position of the FPCB flexible substrate 1, and each pair of circuit nodes is respectively connected to the anode and the cathode of the LED chip; circuit via holes are formed in two ends of the circuit node, and the circuit via holes comprise a blue light circuit via hole 31, a green light circuit via hole 32, a red light circuit via hole 34 and a white light circuit via hole 35; the front surface line and the back surface line of the FPCB flexible substrate 1 are connected through the circuit via hole. Each circuit of the embodiment is provided with a plurality of pairs of circuit nodes, each circuit node is divided into areas through the positive and negative parts of circuits according to the circuit circulation conduction requirements, and the circuits are arranged and connected in a counter bore mode, as shown in fig. 1 and fig. 2, the same primary color LED chips of the adjacent LED chip groups can be connected in series through the circuit conduction holes on the back surface of the circuit, so that the four circuits can be independently or respectively lightened, and the requirements of one lamp for multiple purposes, dimming and color mixing are convenient to realize.

As shown in fig. 1, the present embodiment further preferably includes a first current limiting resistor 41, a second current limiting resistor 42, a third current limiting resistor 44, and a fourth current limiting resistor 45, where the first current limiting resistor 41 is connected to the first line 11 and to the blue light circuit via 31; the second current limiting resistor 42 is connected to the second line 12 and to the green circuit via 32; the third current limiting resistor 44 is connected to the fourth line 14 and to the red light circuit via 34; the fourth current limiting resistor 45 is connected to the fifth circuit 15 and to the white light circuit via 35, so as to facilitate current adjustment through the current limiting resistor.

The FPCB flexible substrate 1 is divided into five parts of circuits through a circuit spacing structure design, namely, the five parts of circuits comprise a first circuit 11, a second circuit 12, a third circuit 13, a fourth circuit 14 and a fifth circuit 15, conducting circuits are etched at the bottom through prefabrication, and conduction is realized through a conducting counter bore 33, in the five parts of circuits, four paths of common anodes (or common cathodes) in a red light LED chip 2, a green light LED chip 3, a blue light LED chip 4 and a white light LED chip 5 are arranged, one path of each color of the cathodes (or the anodes) is separately branched, all the chips are arranged at the center of the FPCB and are linearly arranged, and the light of various colors can be adjusted through adjusting the currents of the four branch circuits, so that the light of various colors can be adjusted through mixing, and the light and color adjusting effect is achieved.

In the LED chip group, a green light LED chip 3 and a blue light LED chip 4 are used for directly emitting light, a red light LED chip 2 is used for exciting red fluorescent powder by a blue chip, a bonding pad is additionally arranged at the bottom of each chip in order to ensure reliability of the LED flip chip group, namely the LED chips in the LED chip group are fixedly arranged at the central position of the FPCB flexible substrate 1 through the bonding pads, and a white cofferdam is preferably arranged around the red light LED chip 2, so that color cross generated by secondary excitation of the fluorescent powder by the blue chip in a high-color-temperature lighting process can be avoided, and the light color effect of a product after dimming and color mixing is not influenced.

In summary, positive and negative conductive circuits are prefabricated on both sides of the front surface and the back surface of the FPCB flexible substrate 1, so that the connection stability and reliability are improved by prefabricating the positive and negative conductive circuits, and the heat resistance is reduced by realizing the electric conduction through the front surface circuit and the back surface circuit; on this basis, positive negative pole conducting wire includes first circuit 11, second circuit 12, third circuit 13, fourth circuit 14 and fifth circuit 15, the LED chipset set up in the central point of FPCB flexible substrate 1 puts, LED chip in the LED chipset is linear arrangement, and with positive negative pole conducting wire is connected, and then makes red green blue white four unification flexible light strip of adjusting luminance can realize sharing anodal circuit or sharing negative pole circuit's design to improve production efficiency, and reliable performance is good, long service life.

The LED chip group is fixed on the prefabricated circuit, the LED chip group comprises a plurality of LED flip chips, each chip is fixed on the prefabricated (such as preprinted) circuit by adopting high-precision tin-silver alloy (the particle diameter is less than 12 microns), and therefore the connection stability and firmness can be effectively improved, and the electrical failure of the product caused by overheating and glue stress is avoided. Through adopting heat resistance > 260 ℃ silica gel as packaging adhesive, the coating of sealing compound layer single face FPCB flexible substrate 1 with LED chipset top and periphery, the sealing compound layer adopts the fashioned circular or oval of silica gel of high thixotropic effect to it has nanometer titanium dioxide white particle powder to mix in silica gel, promotes the colloid refracting index and increases luminance, promotes simultaneously that product aesthetic property, overall structure are even pleasing to the eye, and the preparation is convenient.

The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a flexible lamp area of adjusting luminance of four unifications of red green blue white which characterized in that includes: FPCB flexible substrate and LED chipset, positive negative pole conducting wire is all prefabricated with the both sides at the back to FPCB flexible substrate's front, positive negative pole conducting wire includes first circuit, second circuit, third circuit, fourth circuit and fifth circuit, the LED chipset set up in FPCB flexible substrate's central point puts, LED chip in the LED chipset is linear arrangement, and with positive negative pole conducting wire is connected.

2. The red, green, blue and white four-in-one dimming flexible lamp strip according to claim 1, wherein the first line, the second line, the fourth line and the fifth line are a blue light negative conductive circuit, a green light negative conductive circuit, a red light negative conductive circuit and a white light negative conductive circuit respectively, and the third line is a common positive conductive circuit; or the first line, the second line, the fourth line and the fifth line are respectively a blue light positive electrode conductive circuit, a green light positive electrode conductive circuit, a red light positive electrode conductive circuit and a white light positive electrode conductive circuit, and the third line is a common negative electrode conductive circuit.

3. The red, green, blue and white four-in-one dimming flexible light strip according to claim 2, wherein the first line, the second line, the fourth line and the fifth line are sequentially arranged from top to bottom.

4. The red, green, blue and white integrated dimming flexible light strip according to claim 2 or 3, wherein a blue light circuit pad, a green light circuit pad, a common polarity circuit pad, a red light circuit pad and a white light circuit pad are respectively arranged on the first line, the second line, the third line, the fourth line and the fifth line.

5. The RGB-white four-in-one dimming flexible light strip as claimed in claim 4, wherein a plurality of pairs of circuit nodes are disposed at a central position of the FPCB flexible substrate, and each pair of circuit nodes is respectively connected with the anode and the cathode of the LED chip.

6. The red, green, blue and white four-in-one dimming flexible light strip according to claim 5, wherein circuit via holes are arranged at two ends of the circuit node, and comprise a blue light circuit via hole, a green light circuit via hole, a red light circuit via hole and a white light circuit via hole; the front line and the back line of the FPCB flexible substrate are connected through the circuit via hole.

7. The red, green, blue and white four-in-one dimming flexible light strip according to claim 6, further comprising a first current limiting resistor, a second current limiting resistor, a third current limiting resistor and a fourth current limiting resistor, wherein the first current limiting resistor is connected with the first line and is connected with the blue light circuit via hole; the second current limiting resistor is connected with the second line and the green light circuit via hole; the third current limiting resistor is connected with the fourth circuit and is connected with the red light circuit via hole; the fourth current limiting resistor is connected with the fifth circuit and the white light circuit via hole.

8. The red, green, blue and white combined dimming flexible lamp strip according to any one of claims 1 to 3, wherein the LED chip group is sequentially provided with a red LED chip, a green LED chip, a blue LED chip and a white LED chip, and the red LED chip, the green LED chip, the blue LED chip and the white LED chip are uniformly arranged in a staggered manner.

9. The rgb-whiter flexible light strip of claim 8, wherein a white cofferdam is disposed around the red LED chip.

10. The RGB-white four-in-one dimming flexible light strip according to any one of claims 1 to 3, wherein LED chips in the LED chip groups are fixedly arranged at the center of the FPCB flexible substrate through bonding pads.