Multipurpose double-color white light LED light source

Abstract

The utility model relates to the technical field of LED light sources, in particular to a multipurpose double-color white-light LED light source, which comprises a substrate, and the substrate is provided with a light source area consisting of a warm white LED and a cold white LED and a circuit structure for supplying power to the warm white LED and the cold white LED. Wherein the circuit structure comprises a cold white positive electrode port C +, a cold white negative electrode port C-, a warm white positive electrode port +, a warm white negative electrode port W-, a conversion interface T1 and a conversion interface T2 which are formed on the substrate; the warm white LED is electrically connected with the warm white cathode port W-and the warm white anode port +, and the cold white LED is electrically connected with the cold white anode port C + and the cold white cathode port C. The utility model provides a double-color COB light source scheme capable of being simultaneously adapted to two-wire drive, three-wire drive and four-wire drive. And by improving the driving adaptation degree, the use difficulty is reduced, the universality and interchangeability are enhanced, and extremely high practical value and popularization value are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED light sources, in particular to a multi-purpose dual-color white LED light source. Background Technique

[0002] Under the current technical background, with the continuous expansion of application scenarios, people's demand for dual-color light sources with dimming functions is increasing day by day. As one of the dual-color LED light sources, its design is mainly divided into three types: a three-wire design with a common anode, a warm white cathode, and a cold white cathode, a four-wire design with independent cold white and warm white cathodes and anodes, and a two-wire design that can drive the cold white and warm white lights separately in positive and negative directions.

[0003] However, these different light source design schemes require corresponding adaptive drivers to achieve the normal operation of the light source, and cannot achieve the drive adaptation for two-wire, three-wire, and four-wire dual-color dimming. Therefore, it is not user-friendly for customers.

[0004] Based on this, in order to achieve the adaptive general ability of the LED light source, we propose a multi-purpose dual-color white LED light source. Summary of the Invention

[0005] The purpose of the utility model is to solve the disadvantages in the prior art that the drive adaptation for two-wire, three-wire, and four-wire cannot be achieved, and to propose a multi-purpose dual-color white LED light source.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Design a multi-purpose dual-color white LED light source, including a substrate, on which there is a light source area composed of warm white LEDs and cold white LEDs and a circuit structure for supplying power to the warm white LEDs and cold white LEDs;

[0008] Wherein the circuit structure includes a cold white positive terminal port C+, a cold white negative terminal port C-, a warm white positive terminal port +, a warm white negative terminal port W-, a conversion interface T1, and a conversion interface T2 formed on the substrate;

[0009] The warm white LED is electrically connected to the warm white negative terminal port C- and the warm white positive terminal port +, the cold white LED is electrically connected to the cold white positive terminal port C+ and the cold white negative terminal port C-, the conversion interface T1 is electrically connected to the warm white positive terminal port +, and the conversion interface T2 is electrically connected to the cold white positive terminal port C+.

[0010] Further, when connected in four wires;

[0011] The positive electrode of the warm white LED driver is connected to the warm white positive terminal port +, the negative electrode of the warm white LED driver is connected to the warm white negative terminal port W-, the positive electrode of the cold white LED driver is connected to the cold white positive terminal port C+, the negative electrode of the cold white LED driver is connected to the cold white negative terminal port C-, and the conversion interfaces T1 and T2 are electrically disconnected.

[0012] Further, when connected in three lines;

[0013] The warm white positive terminal port + is electrically connected to the common anode of the driver, the negative electrode of the warm white LED driver is connected to the warm white negative terminal port W-, the negative electrode of the cold white LED driver is connected to the cold white negative terminal port C-, and the conversion interfaces T1 and T2 are electrically connected.

[0014] Further, when connected in two lines:

[0015] The warm white positive terminal port + and the cold white negative terminal port C- are connected, the cold white positive terminal port C+ and the warm white negative terminal port W- are connected, and the conversion interfaces T1 and T2 are electrically disconnected;

[0016] Wherein the conduction directions of the warm white LED and the cold white LED are opposite.

[0017] Further, a constant voltage IC is also electrically connected to the circuit of the warm white positive terminal port + and the cold white positive terminal port C+, and the conduction directions of the two constant voltage ICs are opposite.

[0018] Further, a plurality of warm white LEDs and cold white LEDs are arranged at intervals in the light source area, and an insulating glue layer surrounding the outside of the light source area is provided above the substrate.

[0019] Further, a ring-shaped damming glue layer is formed above the insulating glue layer, and a packaging glue layer covering the warm white LED and the cold white LED is filled in the damming glue layer.

[0020] Further, both the warm white LED and the cold white LED are set as CSP chips.

[0021] Further, the warm white LED includes a blue LED and a warm white phosphor glue layer covering the outside thereof, the cold white LED includes a blue LED, and the packaging glue layer is a cold white phosphor glue layer mixed with phosphor.

[0022] A multi-purpose dual-color white light LED light source proposed by the present utility model has the beneficial effects that: a dual-color COB light source solution that can be simultaneously adapted to two-wire, three-wire and four-wire drives provided by the present utility model has extremely high practical value and promotion value by improving the drive adaptability, reducing the use difficulty, enhancing the versatility and interchangeability. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the present utility model;

[0024] Figure 2 is a circuit schematic diagram of the circuit structure of the present utility model;

[0025] Figure 3 is a schematic structural diagram of the present utility model in the case of three wires;

[0026] Figure 4 is a circuit schematic diagram of the circuit structure of the present utility model in the case of three wires;

[0027] Figure 5 is a schematic structural diagram of the present utility model in the case of two wires;

[0028] Figure 6 is a circuit schematic diagram of the circuit structure of the present utility model in the case of two wires;

[0029] Figure 7 is a circuit schematic diagram of the four - wire circuit of the present utility model with a constant - voltage IC;

[0030] Figure 8 is a schematic structural diagram of the substrate of the present utility model;

[0031] Figure 9 is the circuit structure diagram of the substrate of the present utility model.

[0032] In the figure: 1. Substrate; 10. Light - source area; 11. Insulating glue layer; 12. Dam glue layer; 13. Encapsulating glue layer; 2. Warm - white LED; 3. Cold - white LED; 4. Circuit structure. Specific embodiments

[0033] 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 of the embodiments.

[0034] Refer to Figures 1-9 is an embodiment of the present utility model, which discloses a multi - purpose dual - color white - light LED light source. Among them, in the figure, LED1 is a warm - white LED, LED2 is a cold - white LED, and IC is a constant - voltage IC. Specifically, the LED light source includes a substrate 1, and the substrate 1 has a light - source area 10 composed of a warm - white LED 2 and a cold - white LED 3, and a circuit structure 4 for supplying power to the warm - white LED 2 and the cold - white LED 3;

[0035] Among them, the circuit structure 4 includes a cold - white positive - terminal port C +, a cold - white negative - terminal port C -, a warm - white positive - terminal port +, a warm - white negative - terminal port W -, a conversion interface T1, and a conversion interface T2 formed on the substrate 1;

[0036] The warm white LED 2 is electrically connected to the warm white negative terminal port W- and the warm white positive terminal port +, the cold white LED 3 is electrically connected to the cold white positive terminal port C+ and the cold white negative terminal port C-, the conversion interface T1 is electrically connected to the warm white positive terminal port +, and the conversion interface T2 is electrically connected to the cold white positive terminal port C+.

[0037] Of course, it should be noted that in this embodiment, a circuit is formed between the cold white positive terminal port C+ and the cold white negative terminal port C- on the substrate 1 to facilitate the sequential electrical connection of multiple cold white LEDs 3. At the same time, a circuit is also formed between the warm white positive terminal port + and the warm white negative terminal port W- on the substrate 1 to facilitate the sequential electrical connection of multiple warm white LEDs 2. Specifically, it can be as Figure 9 shown, which is a schematic diagram of the circuit structure on the substrate 1 of this application.

[0038] As Figure 1 、 Figure 2 shown, in some embodiments, when four-wire connection is used, that is, when this light source is connected to a four-wire driver;

[0039] The positive terminal of the driver of the warm white LED 2 is connected to the warm white positive terminal port +, the negative terminal of the driver of the warm white LED 2 is connected to the warm white negative terminal port W-, the positive terminal of the driver of the cold white LED 3 is connected to the cold white positive terminal port C+, the negative terminal of the driver of the cold white LED 3 is connected to the cold white negative terminal port C-, and the conversion interfaces T1 and T2 are electrically disconnected. That is, in this embodiment, since the conversion interfaces T1 and T2 are not conducting, independent cold white and warm white four-wire driving is realized to independently drive the cold white LED 3 and the warm white LED 2.

[0040] As Figure 3 、 Figure 4 shown, in some embodiments, when three-wire connection is used, that is, when this light source is connected to a three-wire driver;

[0041] The warm white positive terminal port + is electrically connected to the common anode of the driver, the negative terminal of the driver of the warm white LED 2 is connected to the warm white negative terminal port W-, the negative terminal of the driver of the cold white LED 3 is connected to the cold white negative terminal port C- port, and the conversion interfaces T1 and T2 are electrically connected. As shown in the figure, this wiring setting connects the warm white positive terminal port + and the cold white positive terminal port C+ through the conversion interfaces T1 and T2. The conversion interfaces T1 and T2 can be connected by wire soldering or directly welded together. At this time, the cold white and warm white driving respectively controlled by the common anode three wires also realizes the independent driving of the cold white and the warm white.

[0042] As Figure 5 、 Figure 6As shown, when connected in two-wire mode, i.e., when this light source is connected to a two-wire driver:

[0043] The warm white positive terminal port + and the cold white negative terminal port C- are connected, the cold white positive terminal port C+ and the warm white negative terminal port W- are connected, and the conversion interface T1 and the conversion interface T2 circuits are disconnected;

[0044] Wherein the conduction directions of the warm white LED2 and the cold white LED3 are opposite, that is, the LED described in the present invention is a light-emitting diode.

[0045] Specifically, when connected in two-wire mode, the driving voltage direction of the driver can be controlled. When it is necessary to drive the warm white LED2 to work, a positive voltage is applied to the warm white positive terminal port + (i.e., the cold white negative terminal port C-), and at this time, the cold white LED3 light source does not emit light due to the reverse cut-off effect of the LED chip; conversely, when it is necessary to drive the cold white LED3 to work, a positive voltage is applied to the cold white positive terminal port C+ (i.e., the warm white negative terminal port W-), and at this time, the warm white LED2 will also not emit light due to the reverse cut-off of the chip, thus realizing two-wire drive.

[0046] Refer to Figure 7 , as a preference, in this embodiment, a constant voltage IC is also electrically connected to the circuits of the warm white positive terminal port + and the cold white positive terminal port C+. The conduction directions of the two constant voltage ICs are opposite, that is, in this embodiment, the constant voltage drive of the light source is realized by adding a constant voltage IC in the circuit, so as to match the current higher-reliability constant voltage drive LED light source usage environment.

[0047] Refer to Figure 8 , further, in this embodiment, a plurality of warm white LED2s and cold white LED3s are arranged at intervals in the light source area 10, and an insulating glue layer 11 surrounding the outside of the light source area 10 is provided above the substrate 1.

[0048] On the basis of the above embodiment, in this embodiment, a ring-shaped dike glue layer 12 is further formed above the insulating glue layer 11, and a packaging glue layer 13 covering the warm white LED2 and the cold white LED3 is filled in the dike glue layer 12.

[0049] It should be noted that the warm white LED2 and the cold white LED3 in this embodiment are both set as CSP chips. Of course, in a further embodiment, the warm white LED2 includes a blue LED and a warm white phosphor glue layer covering the outside thereof, the cold white LED3 includes a blue LED, and the packaging glue layer 13 is a cold white phosphor glue layer mixed with phosphor;

[0050] That is, the cold white LED 3 can also be a blue LED. In this case, there is phosphor in the encapsulation glue layer 13, and the cold white light is realized by the blue LED exciting the phosphor in the encapsulation glue layer 13 to achieve high color temperature cold white light. Secondly, it can also be that phosphor glue is coated around the blue LED chip to achieve high color temperature cold white light.

[0051] The warm white LED 2 can also be that phosphor glue is coated around the blue LED chip to achieve low color temperature warm white light.

[0052] In addition, in the present invention, the number of series-connected warm white LEDs 2 and cold white LEDs 3 is taken as 15 as an example. Of course, in other embodiments, the warm white LEDs 2 and cold white LEDs 3 can have different series-parallel connection modes, which are not limited to the forms shown in the drawings, and can also be various series-parallel combination modes such as 7 series and 2 parallel, etc., and no more restrictions are made here.

[0053] The above is only the preferred specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A multi-purpose dual-color white light LED light source, characterized in that, It includes a substrate (1) with a light source area (10) composed of warm white LEDs (2) and cold white LEDs (3) thereon, and a circuit structure (4) for powering the warm white LEDs (2) and cold white LEDs (3). The circuit structure (4) includes a cold white positive terminal port C+, a cold white negative terminal port C-, a warm white positive terminal port +, a warm white negative terminal port W-, a conversion interface T1, and a conversion interface T2 formed on the substrate (1). The warm white LED (2) is electrically connected to the warm white negative terminal port W- and the warm white positive terminal port +, the cold white LED (3) is electrically connected to the cold white positive terminal port C+ and the cold white negative terminal port C-, the conversion interface T1 is electrically connected to the warm white positive terminal port +, and the conversion interface T2 is electrically connected to the cold white positive terminal port C+.

2. The multi-purpose dual-color white LED light source according to claim 1, wherein: When connected in four wires; The positive electrode of the driver of the warm white LED (2) is connected to the warm white positive terminal port +, the negative electrode of the driver of the warm white LED (2) is connected to the warm white negative terminal port W-, the positive electrode of the driver of the cold white LED (3) is connected to the cold white positive terminal port C+, the negative electrode of the driver of the cold white LED (3) is connected to the cold white negative terminal port C-, and the conversion interface T1 and the conversion interface T2 are electrically disconnected.

3. The multi-purpose two-color white LED light source according to claim 1, characterized in that: When connected in three wires; The warm white positive terminal port + is electrically connected to the common anode of the driver, the negative electrode of the driver of the warm white LED (2) is connected to the warm white negative terminal port W-, the negative electrode of the driver of the cold white LED (3) is connected to the cold white negative terminal port C- port, and the conversion interface T1 and the conversion interface T2 are electrically connected.

4. A multi-purpose two-color white light LED light source according to claim 1, characterized in that: When connected in two wires: The warm white positive terminal port + and the cold white negative terminal port C- are connected, the cold white positive terminal port C+ and the warm white negative terminal port W- are connected, and the conversion interface T1 and the conversion interface T2 are electrically disconnected; The conduction directions of the warm white LED (2) and the cold white LED (3) are opposite.

5. A multi-purpose dual-color white light LED light source according to claim 1, characterized in that: A constant voltage IC is also electrically connected to the circuit of the warm white positive terminal port + and the cold white positive terminal port C+, and the conduction directions of the two constant voltage ICs are opposite.

6. The multi-purpose two-color white LED light source according to claim 1, wherein: A plurality of the warm white LEDs (2) and cold white LEDs (3) are arranged at intervals in the light source area (10), and an insulating glue layer (11) surrounding the outside of the light source area (10) is provided above the substrate (1).

7. A multi-purpose dual-color white LED light source according to claim 6, characterized in that: A ring-shaped damming glue layer (12) is also formed above the insulating glue layer (11), and an encapsulation glue layer (13) covering the warm white LEDs (2) and cold white LEDs (3) is filled in the damming glue layer (12).

8. A multi-purpose dual-color white light LED light source according to any one of claims 1-7, characterized in that: Both the warm white LED (2) and the cold white LED (3) are set as CSP chips.

9. A multi-purpose dual-color white light LED light source according to claim 7, characterized in that: The warm white LED (2) includes a blue LED and a warm white phosphor glue layer covering the outside thereof, the cold white LED (3) includes a blue LED, and the encapsulation glue layer (13) is a cold white phosphor glue layer mixed with phosphor.

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