High-voltage drive-free three-color COB lamp strip

Abstract

The high-voltage drive-free three-color COB lamp strip comprises a flexible circuit board, the flexible circuit board is provided with a bridge rectifier, a constant-current IC, a resistor and a plurality of LED chip sets, the constant-current IC is provided with a resistor connector and an LED chip connector, one end of the resistor is electrically connected with the bridge rectifier, the other end of the resistor is electrically connected with the constant-current IC through the resistor connector, the LED chip sets and the LED chip connectors are in one-to-one correspondence, and the LED chip sets and the LED chip connectors are in one-to-one correspondence. Each LED chip set is electrically connected with the constant current IC at the corresponding LED chip joint, and the color temperatures of the plurality of LED chip sets are different. The bridge rectifier, the constant-current IC, the resistor and the LED chip sets are arranged on the flexible circuit board, the LED chip sets are different in color temperature and electrically connected with the constant-current IC at the corresponding LED chip connectors, the constant-current IC controls the LED chips to be turned on and turned off, and therefore the LED chips can be controlled to be turned on and turned off through the constant-current IC to switch the light emitting mode of the lamp strip, use is flexible and changeable, and the LED lamp strip is suitable for large-scale popularization and application. And various light use requirements of users can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of light belts, in particular to a high-voltage driverless three-color COB light belt. Background Technique

[0002] The COB light belt is a new type of LED light belt different from using LED SMD lamp beads as the light source. It directly bonds the LED wafers to the light belt substrate and has gradually emerged in various lighting and decoration industries because of its long service life, simple manufacturing process, high energy efficiency and environmental friendliness. The existing driverless COB light belt includes a flexible circuit board, LED chips arranged at equal intervals on the flexible circuit board, and a built-in drive bridge rectifier arranged on the flexible circuit board and electrically connected to the LED chips. Since the color temperature of the LED chips is single, the light output mode of the driverless COB light belt is single and cannot meet the lighting needs of users. Content of the Utility Model

[0003] The purpose of the utility model is to provide a high-voltage driverless three-color COB light belt to solve the problem that the existing driverless COB light belt has a single light output mode and cannot meet the lighting needs of users.

[0004] The utility model is realized by the following technical solutions:

[0005] The high-voltage driverless three-color COB light belt includes a flexible circuit board. A bridge rectifier, a constant current IC, a resistor and an LED chip group are arranged on the flexible circuit board. The constant current IC has a resistor connection terminal and an LED chip connection terminal. One end of the resistor is electrically connected to the bridge rectifier, and the other end is electrically connected to the constant current IC at the resistor connection terminal. The LED chip group and the LED chip connection terminals are all in several numbers and correspond one by one. Each LED chip group is electrically connected to the constant current IC at the corresponding LED chip connection terminal, and the color temperatures of several LED chip groups are different.

[0006] Further, the resistors and the resistor connection terminals are all in several numbers and correspond one by one. Each resistor is electrically connected to the constant current IC at the corresponding resistor connection terminal, and each resistor is connected in parallel.

[0007] Further, the constant current IC also has a sound control connection terminal and / or a brightness connection terminal.

[0008] Further, the LED chip group includes several LED chips arranged at intervals on the flexible circuit board, and the distance between two adjacent LED chips is 2.5 mm - 10 mm; and / or a fluorescent silica gel is sprayed on the LED chip group.

[0009] Further, there are several flexible printed circuit boards, and the several flexible printed circuit boards are connected in series in sequence. Capacitors are provided on each of the flexible printed circuit boards, and the capacitor signals are connected to synchronously turn on and off the LED chip groups with the same color temperature on each of the flexible printed circuit boards.

[0010] Further, among two adjacent flexible printed circuit boards, a shearing line position is formed at one end of one flexible printed circuit board adjacent to the other flexible printed circuit board, and a connecting conductor connecting the two adjacent flexible printed circuit boards is provided on the shearing line position.

[0011] Further, the connecting conductor includes a positive conductor and a negative conductor.

[0012] Further, a flexible glue layer is wrapped outside the flexible printed circuit board, and the flexible glue layer is a silica gel layer.

[0013] Further, the thickness of the flexible printed circuit board is 1 mm - 2 mm.

[0014] Further, the flexible printed circuit board includes a first PEI film layer, a first rolled copper foil, a first PET film layer, a second rolled copper foil, and a second PET film layer which are arranged in sequence from top to bottom.

[0015] The advantages of this technical solution are that by configuring a bridge rectifier, a constant current IC, a resistor, and several LED chip groups on the flexible printed circuit board, the several LED chip groups have different color temperatures, and the several LED chip groups are electrically connected to the constant current IC at the corresponding LED chip connectors. The constant current IC controls the turning on and off of each group of LED chips. Therefore, the turning on and off of each group of LED chips can be controlled by the constant current IC to switch the light output mode of the light strip, which is flexible and variable and adapts to various lighting needs of users. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required to be used in the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the description of the embodiments.

[0018] Figure 1 is a three-dimensional view of the high-voltage driver-free three-color COB light strip disclosed in the embodiment;

[0019] Figure 2 is Figure 1 a partial enlarged view of part A in

[0020] Figure 3 Yes Figure 2 Partial enlarged view at position B in

[0021] Figure 4 Partial cross-sectional view of the high-voltage driverless three-color COB light strip disclosed in the embodiment;

[0022] Figure 5 Exploded view of the flexible circuit board in the embodiment;

[0023] Figure 6 Circuit diagram of the high-voltage driverless three-color COB light strip disclosed in the embodiment. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment: As Figures 1-6 shown, the high-voltage driverless three-color COB light strip includes a flexible circuit board 1, on which a bridge rectifier 2, a constant current IC 3, a resistor 4 and an LED chip group 5 are provided. The constant current IC 3 has a resistor connector 301 and an LED chip connector 302. One end of the resistor 4 is electrically connected to the bridge rectifier 2, and the other end is electrically connected to the constant current IC 3 at the resistor connector 301. Both the LED chip group 5 and the LED chip connector 302 are in several numbers and correspond one by one. Each LED chip group 5 is electrically connected to the constant current IC 3 at the corresponding LED chip connector 302, and several LED chip groups 5 have different color temperatures.

[0026] As an embodiment, both the LED chip group 5 and the LED chip connector 302 are 2 and correspond one by one. Among them, one group of LED chips 501 emits yellow light, and one group of LED chips 501 emits white light. When in use, the user controls the opening and closing of each group of LED chips 501 through the constant current IC 3. Specifically, the user can make the yellow light LED chip group 5 turn on and the white light LED chip group 5 turn off, or the yellow light LED chip group 5 turn off and the white light LED chip group 5 turn on, or the yellow light LED chip group 5 turn on and the white light LED chip group 5 turn on through the constant current IC 3. Therefore, the opening and closing of each group of LED chips 501 can be controlled through the constant current IC 3 to achieve warm light illumination, cold light illumination and neutral light illumination, with diverse lighting effects and adapting to various lighting needs of users.

[0027] In summary, the present utility model provides a high-voltage driverless three-color COB light strip to solve the problem that the existing driverless COB light strip has a single light output mode and cannot adapt to the light usage requirements of users. It mainly configures a bridge rectifier 2, a constant current IC 3, a resistor 4, and several LED chip groups 5 on the flexible circuit board 1. The several LED chip groups 5 have different color temperatures. The several LED chip groups 5 are electrically connected to the constant current IC 3 at the corresponding LED chip connectors 302. The constant current IC 3 controls the on and off of each group of LED chips 501. Therefore, the on and off of each group of LED chips 501 can be controlled by the constant current IC 3 to switch the light output mode of the light strip, making it flexible and variable in use and adapting to various light usage requirements of users.

[0028] In the embodiment of the present utility model, both the resistor 4 and the resistor connector 301 are in several numbers and correspond one by one. Each resistor 4 is electrically connected to the constant current IC 3 at the corresponding resistor connector 301, and the resistors 4 are connected in parallel. More specifically, both the resistor 4 and the resistor connector 301 are 4 in number. The above setting makes the circuit have good stability and reliability by configuring the resistor 4 and the resistor connector 301 in several numbers.

[0029] In the embodiment of the present utility model, the constant current IC 3 also has a sound control connector (not marked in the figure) and a brightness connector (not marked in the figure). In this embodiment, the constant current IC 3 has 6 connectors. Among them, 4 connectors are respectively connected to 4 resistors 4, and 2 connectors are respectively connected to 2 groups of LED chips. In other embodiments, the constant current IC 3 can be configured to have 8 connectors. Among them, 4 connectors are respectively connected to 4 resistors 4, 2 connectors are respectively connected to 2 groups of LED chips, 1 connector is connected to a voice module (such as a speaker), and 1 connector is connected to a night light module. In summary, the above setting makes the light strip controllable by sound and adjustable in brightness through the configuration of the sound control connector and the brightness connector on the constant current IC 3, making it flexible and variable in use.

[0030] In the embodiment of the present utility model, the LED chip group 5 includes several LED chips 501 spaced on the flexible circuit board 1. The distance between two adjacent LED chips 501 is 2.5 mm - 10 mm, and the color temperatures of the LED chips 501 in the same LED chip group 5 are the same.

[0031] In the embodiment of the present utility model, a fluorescent silica gel 10 is sprayed on the LED chip group 5. The fluorescent silica gel 10 is sprayed on the LED chip group 5 by means of glue pulling.

[0032] In the embodiment of the present utility model, there are several flexible printed circuit boards 1, and the several flexible printed circuit boards 1 are connected in series in sequence. Capacitors 6 are provided on each flexible printed circuit board 1, and the capacitors 6 are signal-connected to synchronously turn on and off the LED chip groups 5 with the same color temperature on each flexible printed circuit board 1. The above setting enables the LED chip groups 5 with the same color temperature on each flexible printed circuit board 1 to synchronously turn on and off by providing capacitors 6 on each flexible printed circuit board 1 that are signal-connected to synchronously turn on and off the LED chip groups 5 with the same color temperature on each flexible printed circuit board 1, avoiding the problem that when the light strip is relatively long, the LED chip groups 5 with the same color temperature on each flexible printed circuit board 1 turn on and off asynchronously, resulting in poor light output effect.

[0033] In the embodiment of the present utility model, among two adjacent flexible printed circuit boards 1, a shearing line position 101 is formed at one end of one flexible printed circuit board 1 adjacent to the other flexible printed circuit board 1. A connecting conductor 7 connecting the two adjacent flexible printed circuit boards 1 is provided on the shearing line position 101, and the connecting conductor 7 includes a positive conductor 701 and a negative conductor 702. The above structure is a conventional existing setting and will not be elaborated in detail here.

[0034] In the embodiment of the present utility model, a flexible glue layer (not marked in the figure) is wrapped outside the flexible printed circuit board 1, and the flexible glue layer is a silica gel layer. The above setting enables the light strip to have a good sealing and waterproof effect by wrapping a flexible glue layer outside the flexible printed circuit board 1, avoiding the exposure of the welding points of electronic components to the outside and causing potential safety hazards.

[0035] In the embodiment of the present utility model, the thickness of the flexible printed circuit board 1 is 1 mm - 2 mm.

[0036] In the embodiment of the present utility model, the flexible printed circuit board 1 includes a first PEI film layer 102, a first rolled copper foil 103, a first PET film layer 104, a second rolled copper foil 105, and a second PET film layer 106 that are arranged in sequence from top to bottom.

[0037] It should be noted that this high-voltage driverless three-color COB light strip is connected to the mains through the positive conductor 701 and the negative conductor 702. The input voltage of this high-voltage driverless three-color COB light strip is 220V alternating current. The 220V alternating current is converted into 220V direct current by the bridge rectifier 2, and then stepped down by several resistors 4. When flowing into the constant current IC 3, the voltage drops to 170V and the current drops to 50 mA to 100 mA, and finally flows into the LED chip group 5.

[0038] It should be understood that in the present utility model, terms such as "first" and "second" are used to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present utility model, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information. In addition, the orientation or positional relationship indicated by terms such as "center of the circle", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0039] As described above, one or more embodiments are provided in combination with specific content, and it is not determined that the specific implementation of the present utility model is only limited to these descriptions. Any approximation, similarity to the method, structure, etc. of the present utility model, or several technical deductions or substitutions made under the premise of the concept of the present utility model should be regarded as within the protection scope of the present utility model.

Claims

1. High voltage driver-free three-color COB light strip, including a flexible circuit board, characterized in that: A bridge stack, a constant current IC, a resistor and an LED chipset are provided on the flexible circuit board. The constant current IC has a resistor connector and an LED chip connector. One end of the resistor is electrically connected to the bridge stack, and the other end is electrically connected to the constant current IC at the resistor connector. There are several LED chipsets and LED chip connectors in one-to-one correspondence. Each LED chipset is electrically connected to the constant current IC at the corresponding LED chip connector, and several LED chipsets have different color temperatures.

2. The high voltage driver-free three-color COB light strip according to claim 1, characterized in that: There are a plurality of resistors and resistor connectors, and they correspond one to one. Each resistor is electrically connected to the constant current IC at the corresponding resistor connector, and each resistor is connected in parallel.

3. The high voltage driver-free three-color COB light strip according to claim 1, characterized in that: The constant current IC also has a sound control connector and / or a brightness connector.

4. The high voltage driver-free three-color COB light strip according to claim 1, characterized in that: The LED chipset comprises a plurality of LED chips spaced apart on the flexible circuit board, wherein the distance between two adjacent LED chips is 2.5 mm-10 mm; and / or fluorescent silica gel is sprayed on the LED chipset.

5. The high voltage driver-free three-color COB light strip according to any one of claims 1 to 4, characterized in that: There are a plurality of flexible circuit boards, which are connected in series in sequence. Each flexible circuit board is provided with a capacitor, and each capacitor signal is connected to enable the LED chip groups with the same color temperature on each flexible circuit board to be turned on and off synchronously.

6. The high voltage driver-free three-color COB light strip according to claim 5, characterized in that: Among the two adjacent flexible circuit boards, a cutting line is formed at one end of one flexible circuit board adjacent to the other flexible circuit board, and a connecting conductor for connecting the two adjacent flexible circuit boards is arranged on the cutting line.

7. The high voltage driver-free three-color COB light strip according to claim 6, characterized in that: The connecting conductor includes a positive electrode conductor and a negative electrode conductor.

8. The high voltage driver-free three-color COB light strip according to claim 1, characterized in that: A flexible adhesive layer is wrapped outside the flexible circuit board, and the flexible adhesive layer is a silicone layer.

9. The high voltage driver-free three-color COB light strip according to claim 1, characterized in that: The thickness of the flexible circuit board is 1mm-2mm.

10. The high voltage driver-free three-color COB light strip according to claim 1, characterized in that: The flexible circuit board includes a first PEI film material layer, a first rolled copper foil, a first PET film material layer, a second rolled copper foil and a second PET film material layer which are arranged in sequence from top to bottom.

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