阅读说明：本技术 Led柔性灯带 (LED flexible lamp strip ) 是由 李涛华 杨明华 于 2021-08-26 设计创作，主要内容包括：本发明公开一种LED柔性灯带,其中,LED柔性灯带包括：柔性电路板,LED发光模组和封盖胶体。柔性电路板的正面设有第一电极和第二电极；LED发光模组设于正面,并包括第一LED单元和第二LED单元,LED柔性灯带在第一LED单元处发第一色温的光,在第二LED单元处发第二色温的光,第一色温与第二色温不同,第一LED单元的正极与第一电极电连接,负极与第二电极电连接,第二LED单元的负极与第一电极电连接,正极与第二电极电连接；封盖胶体设于正面,并封盖LED发光模组。第一电极和第二电极输入周期切换极性的电流,使第一LED单元和第二LED单元周期性切换发光,LED柔性灯带获得色温在第一色温至第二色温之间的光。本发明技术方案能使LED柔性灯带可调节灯光的色温。(The invention discloses an LED flexible lamp strip, wherein the LED flexible lamp strip comprises: the LED light-emitting module comprises a flexible circuit board, an LED light-emitting module and a sealing cover colloid. The front surface of the flexible circuit board is provided with a first electrode and a second electrode; the LED flexible lamp strip emits light with a first color temperature at the first LED unit and emits light with a second color temperature at the second LED unit, the first color temperature is different from the second color temperature, the anode of the first LED unit is electrically connected with the first electrode, the cathode of the first LED unit is electrically connected with the second electrode, the cathode of the second LED unit is electrically connected with the first electrode, and the anode of the second LED unit is electrically connected with the second electrode; the sealing cover colloid is arranged on the front side and covers the LED light-emitting module. The first electrode and the second electrode input current with periodically switched polarity, so that the first LED unit and the second LED unit periodically switch to emit light, and the LED flexible lamp strip obtains light with a color temperature between a first color temperature and a second color temperature. According to the technical scheme, the color temperature of the light of the LED flexible lamp strip can be adjusted.)

1. A LED flexible light strip, comprising:

the front surface of the flexible circuit board is provided with a first electrode and a second electrode;

the LED flexible lamp belt emits light with a first color temperature at the first LED unit and emits light with a second color temperature at the second LED unit, the first color temperature is different from the second color temperature, the anode of the first LED unit is electrically connected with the first electrode, the cathode of the first LED unit is electrically connected with the second electrode, the cathode of the second LED unit is electrically connected with the first electrode, and the anode of the second LED unit is electrically connected with the second electrode; and

the sealing cover colloid is arranged on the front side of the flexible circuit board and covers the LED light-emitting module;

the first electrode and the second electrode are used for inputting a driving current with periodically switched polarity, so that the first LED unit and the second LED unit emit light in a periodically switched mode, and the LED flexible lamp strip can obtain lamp light with the color temperature between the first color temperature and the second color temperature.

2. The LED flexible light strip according to claim 1, wherein one first LED unit and one second LED unit are connected in parallel in opposite directions to form an LED group, the LED light emitting module comprises N LED groups, the N LED groups are connected in series, and N is a natural number greater than 1; or

For the LED light-emitting module, the number of the first LED units is N, the number of the second LED units is N, N is a natural number larger than 1, N is the number of the first LED units which are connected in series, N is the number of the second LED units which are connected in series, and the number of the N first LED units which are connected in series and the number of the N second LED units which are connected in series are connected in parallel.

3. The LED flexible light strip of claim 2, wherein a plurality of the LED light modules are arranged in sequence along the length direction of the flexible circuit board.

4. The LED flexible light strip of claim 1, wherein said first LED unit is configured as a first color temperature CSPLED and said second LED unit is configured as a second color temperature CSPLED;

the sealing cover colloid is transparent pouring sealant or pouring sealant mixed with diffusion powder.

5. The LED flexible light strip according to claim 4, wherein a plurality of said first LED units and said second LED units are provided;

in the length direction of the flexible circuit board, the first LED units and the second LED units are alternately arranged.

6. The LED flexible light strip of claim 1, wherein the first LED unit is configured as a first blue LED chip and the second LED unit is configured as a second blue LED chip;

the sealing cover colloid comprises a first pouring sealant mixed with fluorescent powder, the first pouring sealant covers the first fluorescent powder mixed in the part of the first blue-light LED chip and is a first fluorescent powder combination, the second fluorescent powder mixed in the part of the second blue-light LED chip is a second fluorescent powder combination, the first blue-light LED chip excites the first fluorescent powder combination to emit light of the first color temperature, and the second blue-light LED chip excites the second fluorescent powder combination to emit light of the second color temperature.

7. The LED flexible light strip according to claim 6, wherein a plurality of said first LED units and said second LED units are provided;

on the flexible circuit board, a plurality of first LED units are arranged in a first LED row along the length direction of the flexible circuit board, and a plurality of second LED units are arranged in a second LED row along the length direction of the flexible circuit board;

the first pouring sealant comprises a first colloid covering the first LED row and a second colloid covering the second LED row, the first colloid is mixed with the first fluorescent powder combination, and the second colloid is mixed with the second fluorescent powder combination.

8. The LED flexible light strip of claim 7, wherein the encapsulant further comprises a second potting adhesive mixed with a dispersing powder, the second potting adhesive covering the first potting adhesive.

9. The LED flexible light strip of claim 6, wherein the first blue LED chip and the second blue LED chip are each configured as flip-chip LED chips.

10. The LED flexible light strip according to any one of claims 1 to 9, wherein the flexible circuit board has a width of 5 mm; and/or

The width of the cover colloid ranges from 2.5 mm to 2.8 mm.

Technical Field

The invention relates to the technical field of LED lamp belts, in particular to an LED flexible lamp belt.

Background

Color temperature is a physical quantity used in illumination optics to define the color of a light source, and is an overall representation of the spectral characteristics of the illumination source, which can be directly observed by the human eye. In particular, color temperature has the ability to affect the mood and ambiance of the environment of people. If the color temperature is controlled below 2700, people feel quiet and serious; if the color temperature is controlled to be 2700-6500, people feel natural and comfortable; if the color temperature is controlled to be over 6500, people feel relaxed.

The effect of changing mood and environment atmosphere of people can be achieved by changing the color temperature, and along with the popularization of lamps, the LED lamp becomes a preferred decorative lamp for people, and the light and easy-to-install characteristic of the lamp strip is deeply loved by people and is widely applied to various scenes. The environment atmosphere suitable for people under different moods is created through the LED lamp strip, and the method is particularly important.

Disclosure of Invention

The invention mainly aims to provide an LED flexible lamp strip, aiming at enabling the LED flexible lamp strip to adjust the color temperature of lamp light.

In order to achieve the above object, the LED flexible light strip provided by the present invention includes: the LED light-emitting module comprises a flexible circuit board, an LED light-emitting module and a sealing cover colloid. The front surface of the flexible circuit board is provided with a first electrode and a second electrode; the LED light-emitting module is arranged on the front surface of the flexible circuit board and comprises a first LED unit and a second LED unit, the LED flexible lamp belt emits light with a first color temperature at the first LED unit and emits light with a second color temperature at the second LED unit, the first color temperature is different from the second color temperature, the anode of the first LED unit is electrically connected with the first electrode, the cathode of the first LED unit is electrically connected with the second electrode, the cathode of the second LED unit is electrically connected with the first electrode, and the anode of the second LED unit is electrically connected with the second electrode; and the sealing cover colloid is arranged on the front surface of the flexible circuit board and covers the LED light-emitting module. The first electrode and the second electrode are used for inputting a driving current with periodically switched polarity, so that the first LED unit and the second LED unit emit light in a periodically switched mode, and the LED flexible lamp strip can obtain lamp light with the color temperature between the first color temperature and the second color temperature.

Optionally, one of the first LED units and one of the second LED units are connected in parallel in opposite directions to form an LED group, the LED light-emitting module includes N LED groups, the N LED groups are connected in series, and N is a natural number greater than 1; or for the LED light-emitting module, the number of the first LED units is N, the number of the second LED units is N, N is a natural number larger than 1, the number of the first LED units is N, the number of the second LED units is N, the first LED units are connected in series, the number of the second LED units is N, and the number of the first LED units after being connected in series is N, and the number of the second LED units after being connected in series is N.

Optionally, the LED light emitting modules are provided in plurality, and the LED light emitting modules are sequentially arranged along the length direction of the flexible circuit board.

Optionally, the first LED unit is configured as a first color temperature CSPLED, and the second LED unit is configured as a second color temperature CSPLED; the sealing cover colloid is transparent pouring sealant or pouring sealant mixed with diffusion powder.

Optionally, a plurality of first LED units and a plurality of second LED units are provided; in the length direction of the flexible circuit board, the first LED units and the second LED units are alternately arranged.

Optionally, the first LED unit is configured as a first blue LED chip, and the second LED unit is configured as a second blue LED chip; the sealing cover colloid comprises a first pouring sealant mixed with fluorescent powder, the first pouring sealant covers the first fluorescent powder mixed in the part of the first blue-light LED chip and is a first fluorescent powder combination, the second fluorescent powder mixed in the part of the second blue-light LED chip is a second fluorescent powder combination, the first blue-light LED chip excites the first fluorescent powder combination to emit light of the first color temperature, and the second blue-light LED chip excites the second fluorescent powder combination to emit light of the second color temperature.

Optionally, a plurality of first LED units and a plurality of second LED units are provided; on the flexible circuit board, a plurality of first LED units are arranged in a first LED row along the length direction of the flexible circuit board, and a plurality of second LED units are arranged in a second LED row along the length direction of the flexible circuit board; the first pouring sealant comprises a first colloid covering the first LED row and a second colloid covering the second LED row, the first colloid is mixed with the first fluorescent powder combination, and the second colloid is mixed with the second fluorescent powder combination.

Optionally, the sealing colloid further includes a second potting adhesive mixed with diffusion powder, and the second potting adhesive covers the first potting adhesive.

Optionally, the first blue LED chip and the second blue LED chip are both configured as flip LED chips.

Optionally, the width of the flexible circuit board is 5 mm; and/or the width of the cover gel ranges from 2.5 mm to 2.8 mm.

According to the technical scheme, the LED light-emitting module is arranged on the front surface of the flexible circuit board, the first electrode and the second electrode are arranged on the front surface of the flexible circuit board, and the first electrode and the second electrode are connected with an external power supply to provide electric energy required by light emission for the LED light-emitting module. The LED light-emitting module comprises a first LED unit and a second LED unit, the lamp is provided with light rays with a first color temperature at the first LED unit, the lamp is provided with light rays with a second color temperature at the second LED unit, and the light rays with different color temperatures are mixed to finally obtain light with a required color temperature. More specifically, the ratio of the time during which the current flows into the first LED unit and the time during which the current flows into the second LED unit in a unit period to the period time is referred to as a duty ratio. Under the condition that the duty ratio is not changed, by utilizing the characteristic that light can be temporarily stored in the vision of human eyes, after a first color temperature stored in the human eyes at the first LED unit is mixed with a second color temperature observed by the human eyes at the second LED unit, the human eyes finally acquire the light with a new color temperature. If the duty ratio is changed, after the first color temperature remained in the human eyes at the first LED unit is mixed with the second color temperature observed by the human eyes at the second LED unit, the color temperature of the new light finally acquired by the human eyes is changed, namely, the function of adjusting the color temperature is finally achieved by changing the duty ratio.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of an LED flexible light strip according to the present invention;

fig. 2 is a schematic structural diagram of an embodiment of the LED flexible light strip according to the present invention (the capping gel is not shown);

fig. 3 is a circuit diagram of an embodiment of the LED flexible light strip according to the present invention;

fig. 4 is a circuit diagram of another embodiment of the LED flexible light strip according to the present invention;

fig. 5 is a circuit diagram of a further embodiment of the LED flexible light strip of the present invention;

fig. 6 is a top view of an embodiment of the LED flexible light strip according to the present invention;

FIG. 7 is a cross-sectional view of one embodiment at A of FIG. 6;

fig. 8 is a cross-sectional view of another embodiment at a in fig. 6.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Flexible circuit board	11	A first electrode
2	LED light-emitting module	12	Second electrode
				21	A first LED unit	22	Second LED unit
3	Sealing colloid	31	First potting adhesive
				32	Second potting adhesive	311	First fluorescent powder combination
33	Transparent pouring sealant	312	Second phosphor composition
				4	LED group	5	Resistance (RC)
6	Bonding pad

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides an LED flexible lamp strip.

In an embodiment of the present invention, referring to fig. 1 and 2, the LED flexible light strip includes: the LED light-emitting module comprises a flexible circuit board 1, an LED light-emitting module 2 and a sealing cover colloid 3. The front surface of the flexible circuit board 1 is provided with a first electrode 11 and a second electrode 12; LED light emitting module 2 locates flexible circuit board 1's front to including first LED unit 21 and second LED unit 22, LED flexible light area is in the light of first colour temperature is sent in first LED unit 21 department the light of second colour temperature is sent in second LED unit 22 department, first colour temperature with the second colour temperature is inequality. It should be understood that the light with the first color temperature is the color temperature finally presented by the first LED unit 21, and the light with the second color temperature is the color temperature finally presented by the second LED unit 22, not the color temperature initially emitted by the light of the LED unit itself. The anode of the first LED unit 21 is electrically connected to the first electrode 11, the cathode thereof is electrically connected to the second electrode 12, the cathode of the second LED unit 22 is electrically connected to the first electrode 11, and the anode thereof is electrically connected to the second electrode 12; and the sealing cover colloid 3 is arranged on the front surface of the flexible circuit board 1 and covers the LED light-emitting module 2. The first electrode 11 and the second electrode 12 are used for inputting a driving current with periodically switched polarity, so that the first LED unit 21 and the second LED unit 22 periodically switch to emit light, and the LED flexible light strip can obtain light with a color temperature between the first color temperature and the second color temperature. The first electrode 11 and the second electrode 12 are switched by using a PWM (Pulse width modulation) technique, and the color temperature is adjusted by adjusting the duty ratio of two LED units with different light colors. In addition, in the present embodiment, the voltage between the first electrode 11 and the second electrode 12 is 12V, which is not a limitation, but considering that the safe voltage that the human body can bear is generally less than 36V, the voltage involved in the present application is lower than 36V.

According to the technical scheme, the LED light-emitting module 2 is arranged on the front surface of the flexible circuit board 1, the first electrode 11 and the second electrode 12 are arranged on the front surface of the flexible circuit board 1, and the first electrode 11 and the second electrode 12 are connected with an external power supply to provide electric energy required by light emission for the LED light-emitting module. The LED light emitting module 2 includes a first LED unit 21 and a second LED unit 22, and the light emits light of a first color temperature at the first LED unit 21, and emits light of a second color temperature at the second LED unit 22, and the light of different color temperatures is mixed to finally obtain light of a desired color temperature. More specifically, the ratio of the time during which the current flows into the first LED unit 21 and the time during which the current flows into the second LED unit 22 in a unit period to the period time is referred to as a duty ratio. Under the condition that the duty ratio is not changed, by utilizing the characteristic that light can be temporarily stored in the vision of human eyes, after a first color temperature stored in the human eyes at the first LED unit 21 and a second color temperature observed by the human eyes at the second LED unit are mixed, the human eyes finally acquire the light with a new color temperature. If the duty ratio is changed, after the first color temperature retained in the human eye at the first LED unit 21 and the second color temperature observed by the human eye at the second unit are mixed, the color temperature of the new light finally acquired by the human eye is changed, that is, the function of adjusting the color temperature is finally achieved by changing the duty ratio.

In an embodiment, referring to fig. 3 and 4, one of the first LED units 21 and one of the second LED units 22 are connected in parallel in opposite directions to form one LED group 4, the LED lighting module 2 includes N LED groups 4, and the N LED groups 4 are connected in series, where N is a natural number greater than 1. Specifically, the first LED unit 21 and the second LED unit 22 are connected in parallel in opposite directions to form one LED group 4, and in one LED group 4, if the first LED unit 21 fails and is broken down, the wire where the first LED unit 21 is located will be short-circuited to the second LED unit 22 in the same LED group 4, so that the whole LED group 4 can be regarded as one wire, that is, a failure occurring in one LED group 4 does not affect the normal operation of the other LED groups 4 connected in series with the same. In another embodiment, referring to fig. 5, for the LED light emitting module 2, N first LED units 21 are provided, N second LED units 22 are provided, N is a natural number greater than 1, the N first LED units 21 are connected in series, the N second LED units 22 are connected in series, and the N first LED units 21 connected in series are connected in parallel with the N second LED units 22 connected in series. However, considering the rated voltages of the first LED unit 21 and the second LED unit 22, the voltage required after the first LED unit 21 is connected in series and the voltage required after the second LED unit 22 is connected in series does not exceed the voltage provided by the first electrode 11 and the second electrode 12. To ensure that each first LED unit 21 and each second LED unit 22 can normally operate under the condition that the rated voltage is satisfied. In this embodiment, the voltage between the first electrode 11 and the second electrode 12 is 12V, and the rated voltage of each LED unit is 3V, that is, it can be known that the number of LED units in each loop is three or four, but the number of LED units in each loop is not limited thereto, and in order to satisfy the other voltage conditions of the electrodes, different numbers of LED units may be provided. In addition, the situation that the LED units on the whole loop are broken down by current to cause that other loops are short-circuited and can not emit light is avoided. A resistor 5 is provided on each loop in order to ensure the proper operation of the other loops.

Further, the LED light-emitting modules 2 are provided with a plurality of LED light-emitting modules 2, and the LED light-emitting modules 2 are sequentially arranged along the length direction of the flexible circuit board 1. In order to meet the requirement of light emission of the whole lamp strip, a plurality of LED light-emitting modules 2 need to be arranged, and the length directions of the flexible circuit boards 1 are sequentially arranged.

Further, the first LED unit 21 is configured as a first color temperature CSP LED, and the second LED unit 22 is configured as a second color temperature CSP LED. It should be noted that, CSP (Chip Scale Package, CSP) refers to Chip size Package, and CSP LED refers to an LED light emitting device, and can be regarded as a brand new product form different from SMD, and specifically, a light source is wrapped by phosphor or a colloid with phosphor, so that light finally emitted by the light source can reach a required color temperature, and the CSP LED has a smaller size and a larger current than an SMD product, and can be applied to different application scenarios. Referring to fig. 7, the cover sealing colloid 3 is optionally a transparent potting adhesive 33, and since the color temperature of the light emitted by the CSP LED can meet the requirement, the transparent potting adhesive 33 only needs to be covered on the CSP LED for protection. Further optionally, the sealing cap colloid 3 is a pouring sealant mixed with diffusion powder, and the pouring sealant mixed with the diffusion powder can improve the light-emitting uniformity of the CSP LED under the effect of protecting the CSP LED, so that the emitted light looks more comfortable. In addition, because the CSP LED can be directly sealed by the pouring sealant, when the CSP LED is sealed, the CSP LED on the flexible circuit board 1 can be sealed by a straight line gluing process, which is beneficial to saving the cost and reducing the processing difficulty.

It should be understood that, in the embodiment, the color temperature of the flexible circuit board 1 at the first LED unit 21 is 2700K, the color temperature of the flexible circuit board 1 at the second LED unit 22 is 6500K, and the finally adjusted color temperature of the light strip ranges from 2700K to 6500K.

Further, referring to fig. 2, each of the first LED unit 21 and the second LED unit 22 is provided in plurality; in the length direction of the flexible circuit board 1, the first LED units 21 and the second LED units 22 are alternately arranged. It can be understood that structurally, first LED unit 21 and second LED unit 22 are laid in turn, more be favorable to the regulation of colour temperature, the regulation of colour temperature is the light that forms new colour temperature through the light intermixing of different colour temperatures, if the LED unit that can send the light of the same colour temperature is too much set up together, then can lead to mixing the colour temperature that can be mingled with the original light of LED unit in the light after the mixture, lead to still more chaotic after the light mixes, and the lamp area then can not reach the light that sends specific colour temperature. The arrangement structure of the LED units is improved to design the first LED units 21 and the second LED units 22 to be alternately arranged, so that the mixed light is more delicate and is not easy to dope other light with color temperature.

In another embodiment, referring to fig. 8, the first LED unit 21 is configured as a first blue LED chip, and the second LED unit 22 is configured as a second blue LED chip; the sealing cover colloid 3 comprises a first pouring sealant 31 mixed with fluorescent powder, the first pouring sealant 31 covers the first fluorescent powder mixed in the part of the first blue-light LED chip and is a first fluorescent powder combination 311, the first fluorescent powder mixed in the part of the second blue-light LED chip and is a second fluorescent powder combination 312, the first blue-light LED chip excites the first fluorescent powder combination 311 to emit light at the first color temperature, and the second blue-light LED chip excites the second fluorescent powder combination 312 to emit light at the second color temperature. In this embodiment, the first LED unit 21 and the second LED unit 22 both adopt blue LED chips, and can emit blue light, and the chip is sealed with glue on the basis of emitting blue light, and part of the pouring sealant is mixed with a phosphor composition, and excites the phosphor to emit light through blue light, and the light emitted by the phosphor is mixed with the blue light to form another light with a certain color temperature, so as to be observed by people. Specifically, in the embodiment, two different phosphors are combined to generate light rays with two different color temperatures, and further, the two light rays with different color temperatures are mixed to finally form light rays with the color temperature required by people. However, the design is not limited thereto, in other embodiments, the chips configured by the first LED unit 21 and the second LED unit 22 may be red LED chips or green LED chips, and the phosphor combination may be a phosphor combination matched with red light or a phosphor combination matched with green light, and finally both can be mixed to form light with a desired color temperature.

Further, in the present embodiment, a plurality of first LED units 21 and a plurality of second LED units 22 are provided; on the flexible circuit board 1, a plurality of first LED units 21 are arranged in a first LED row along the length direction of the flexible circuit board 1, and a plurality of second LED units 22 are arranged in a second LED row along the length direction of the flexible circuit board 1; the first pouring sealant 31 comprises a first colloid covering the first LED row and a second colloid covering the second LED row, the first colloid is internally mixed with the first fluorescent powder combination 311, and the second colloid is internally mixed with the second fluorescent powder combination 312. Specifically, the first glue mixed with the first phosphor composition 311 covers the first LED row, and the second glue mixed with the second phosphor composition 312 covers the second LED row, so that the process of gluing the flexible circuit board 1 is simplified, and the first LED row and the second LED row can be glued at the same time, or the first LED row is glued and then the second LED row is glued. The above-mentioned step is a gluing process of the first potting adhesive 31, and is to excite the phosphor powder and mix the phosphor powder with the light emitted by the light emitting chip to obtain white light.

Further, the sealing cover colloid 3 further includes a second potting adhesive 32 mixed with diffusion powder, and the first potting adhesive 31 is covered by the second potting adhesive 32. On the basis of sealing by the first potting adhesive 31, the second potting adhesive 32 mixed with the diffusion powder is covered, and the light rays of the color temperature required by people formed by final mixing can be diffused more uniformly by the second potting adhesive 32 mixed with the diffusion powder.

Further, the first blue LED chip and the second blue LED chip are both configured as flip LED chips. The flip LED chip has a small size, a gold wire does not need to be arranged, the problem of processing caused by the gold wire is solved, and the stability of a product is improved while one procedure is omitted. Since the flip LED chip has a smaller size, more flip LED chips can be disposed on the same flexible circuit board 1. In addition, the flip LED chip can be directly welded on the substrate, so that the problem of heat dissipation can be effectively solved.

Optionally, in an embodiment, the width W1 of the flexible circuit board 1 is 5 mm, and the width W2 of the cover gel 3 ranges from 2.5 mm to 2.8 mm. Due to the fact that the LED chip is small in size, the size of the flexible circuit board 1 can be relatively reduced, and therefore the color temperature adjusting function of the lamp strip is guaranteed, and meanwhile materials and cost can be saved. In addition, it should be understood that the flexible circuit board 1 in the present design is an FPC flexible circuit board 1, which has excellent bending performance, high reliability, relatively small volume and light weight. The bending device is used for bending the lamp strip and meets different requirements of people on the lamp strip. In other embodiments, the reverse side of the flexible circuit board 1 can also be provided with a profile radiator to improve the heat radiation performance of the lamp strip. The front surface of the flexible circuit board 1 is also provided with a bonding pad 6 for connecting a plurality of LED light-emitting modules.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.