LED color lamp with controllable flash bubble

Abstract

The application discloses a LED color lamp with controllable flashing bubble, which comprises a controller and a lamp string. The positive and negative output terminals of the controller are connected with the lamp string. The controller supplies power to the lamp string through the positive and negative output terminals and loads control signals on the positive and / or negative output terminals. The lamp string comprises a plurality of LEDs and a plurality of controllable flashing bubbles. The LEDs and the controllable flashing bubbles are in the same current path. The controllable flashing bubbles receive the control signals to realize controllable flashing effect. The LED color lamp with controllable flashing bubble can realize flashing function or flashing mode controlled by the controller.

Description

Technical Field

[0001] This invention relates to the field of LED decorative lights, and more specifically to LED decorative lights with controllable flashing bulbs. Background Technology

[0002] Currently, LED lights with flashing bulbs on the market achieve a similar effect to randomly flashing stars in the sky by adding flashing bulbs in a flashing mode to ordinary light-emitting diodes (LEDs), thus overcoming the defect that ordinary LED lights only have a constant-on mode.

[0003] In existing LED fairy lights with flashing bulbs, the flashing bulbs are controlled by a driver chip to blink in a fixed pattern. It's impossible to control the bulbs through a controller to achieve effects such as different flashing frequencies or patterns. For example, Chinese Patent CN203431704U discloses an LED Christmas light string controlled by an IC chip, belonging to the field of decorative lighting technology. It includes a transformer, a controller, a constantly lit LED light-emitting branch, and a controllable LED light-emitting branch. The output of the transformer is connected to the input of the controller, and the output of the controller is connected to both the constantly lit LED light-emitting branch and the controllable LED light-emitting branch. This IC chip-controlled LED Christmas light string has a simple structure and reasonable design. Through IC module control, it achieves point control of the LEDs in the controllable LED light-emitting branch that require changes in their light emission patterns. It allows for rich variations in the luminous effect of the controllable LED light string without requiring special LEDs. However, the aforementioned LED Christmas light string controlled by an IC chip requires separating the constantly lit LED light-emitting branch and the controllable LED light-emitting branch, and then twisting the two branches together, resulting in a complex light string structure. Chinese Patent Publication No. 205807040U discloses an adjustable flashing light string and cherry blossom tree, including a positive wire that can obtain energy from a voltage power supply; a negative wire connected to a ground wire; and several LED light strings connected in parallel between the positive and negative wires. Each LED light string includes several flashing bulbs and several constantly lit bulbs connected in series. A control chip for controlling the on / off state of the overall circuit is connected to the positive or negative wire. The light string of this invention is controlled by a single control chip. In the early stage, the required control mode and the required functions are simulated by software, so that the effect and function implementation can be seen intuitively. The control mode is also flexible and versatile. The light string of this invention can realize the function of switching between constant light and flashing modes, as well as the function of combining constant light and flashing modes. However, it cannot realize the flashing function or the function of the flashing mode being controlled by a controller or control chip.

[0004] Therefore, how to provide an LED light that can achieve a flashing function or a flashing mode that can be controlled by a controller is currently a research hotspot in this field. Summary of the Invention

[0005] The purpose of this invention is to provide an LED decorative light with controllable flashing bulbs. By assembling controllable flashing bulbs at intervals among the constantly lit LEDs, the controllable flashing bulbs receive control signals loaded by the controller at the power output terminal, thereby realizing an LED decorative light whose flashing function or flashing mode can be controlled by the controller.

[0006] An LED decorative light with controllable flashing bulbs, the LED decorative light comprising:

[0007] Controller, string lights;

[0008] The controller output terminals are connected to the light string, and the controller supplies power to the light string at the positive and negative terminals and applies a control signal to the positive and / or negative terminals.

[0009] The light string includes several LEDs and several controllable flashing bulbs, and the several LEDs and several controllable flashing bulbs are in the same current path;

[0010] The controllable flashing bubble receives the control signal to achieve a controllable flashing effect.

[0011] It should be understood that applying a control signal to the positive terminal and / or the negative terminal means that the control signal can be applied to the positive terminal alone, the control signal can be applied to the negative terminal alone, or the control signal can be applied to both the positive and negative terminals in combination. Applying a control signal to the positive terminal and / or the negative terminal means applying the control signal to the power output terminal.

[0012] It should be understood that the plurality of LEDs and the plurality of controllable flashing bulbs in the same current path can be formed by the plurality of LEDs and the plurality of controllable flashing bulbs being connected in parallel; or by a portion of the plurality of LEDs and a portion of the plurality of controllable flashing bulbs being connected in parallel in a parallel group, and the plurality of parallel groups being connected in series to form the same current path; or by a portion of the plurality of LEDs and a portion of the plurality of controllable flashing bulbs being connected in series in a series group, and the plurality of series groups being connected in parallel to form the same current path.

[0013] Preferably, the controllable flash bubble includes:

[0014] The driver chip receives the control signal and controls the controlled LED to achieve a controllable flashing effect.

[0015] It should be understood that the controlled LED can be a single warm white LED; a single cool white LED; or several LEDs of different primary colors, such as a tri-color LED composed of red, green, and blue LEDs. The controlled LED is controlled by a single output port of the driver chip, or by several output ports.

[0016] Preferably, the driver chip is triggered by the control signal to perform calculations, and the calculation results drive the controlled LED.

[0017] Preferably, the plurality of LEDs are constant-on LEDs. The constant-on LEDs can be cool white LEDs, warm white LEDs, or LEDs of other colors. It should be understood that the constant-on LEDs can be controlled by the controller to achieve blinking, gradually brightening from dark, gradually dimming from bright, or remaining at a set brightness level.

[0018] Furthermore, the aforementioned LEDs are ordinary light-emitting diodes without built-in driver chips.

[0019] Preferably, the control signal includes an address signal. The driver chip receives the address signal and compares it with the driver chip address. When the received address signal matches the driver chip address, the control signal is executed.

[0020] It should be understood that the controllable flashing bulbs can be arranged sequentially according to the addresses of the driving chips, or they can be arranged randomly.

[0021] It should be understood that the plurality of LEDs and the plurality of controllable flashing bulbs can be connected in parallel to form the light string, connected in series, connected in parallel first and then in series, or connected in series first and then in parallel. The plurality of LEDs and the plurality of controllable flashing bulbs can be assembled at fixed intervals or at random intervals.

[0022] Preferably, the operation can be an arithmetic operation, a logical operation, or a combination of arithmetic and logical operations.

[0023] Preferably, the driver chip performs pulse counting operations based on the control signal.

[0024] As another calculation method, the driver chip performs encoding and decoding operations on the control signal, and the pulse high and low level widths of the control signal correspond to the encoded information.

[0025] As a preferred embodiment of the encoding and decoding operation, different logical encoding information is represented by high-level signals of different lengths, or low-level signals of different lengths, or combinations of high-level signals of different lengths and low-level signals of different lengths.

[0026] As another calculation method, the driver chip performs modulation and demodulation operations on the control signal based on current or voltage frequency, and drives the controlled LED according to the modulation and demodulation operation results.

[0027] Preferably, the controller of the LED colored light includes a controllable switch module, through which the control signal is loaded.

[0028] As a preferred embodiment for loading the control signal, the controllable switch module includes a first controllable switch and an intermediate level module. When the first controllable switch is off, the intermediate level module generates a second level, and the control signal is loaded by switching between the power supply level and the second level. The second level is higher than the reference ground and lower than the power supply level.

[0029] As an alternative method for loading the control signal, the control signal is loaded by controlling the controllable switch module to turn on and off. It should be understood that when the controllable switch module is turned on and off, the controllable flash bulb receives power and also receives pulse signals generated by the on / off state of the controllable switch module, either rising edge signals or falling edge signals.

[0030] As an alternative to loading the control signal, the controllable switch module is a first controllable switch, and the control signal is loaded by controlling the first controllable switch to turn on and off.

[0031] As an alternative to loading the control signal, the controllable switch module includes:

[0032] The second controllable switch, the third controllable switch, and the current limiting resistor;

[0033] The two controllable switches include a second controllable switch control terminal, a second controllable switch input terminal, and a second controllable switch output terminal. The second controllable switch control terminal is electrically connected to the control circuit, the second controllable switch input terminal serves as the input terminal of the controllable switch module, and the second controllable switch output terminal is connected to ground.

[0034] The third controllable switch includes a third controllable switch control terminal, a third controllable switch input terminal, and a third controllable switch output terminal. The third controllable switch control terminal is electrically connected to the control circuit, and the third controllable switch output terminal is connected to ground.

[0035] One end of the current limiting resistor is connected to the input terminal of the second controllable switch, and the other end of the current limiting resistor is connected to the input terminal of the third controllable switch.

[0036] This invention enables LED lights to achieve a flashing function or flashing mode that can be controlled by the controller by assembling controllable flashing bulbs at intervals between constantly lit LEDs. The controllable flashing bulbs receive control signals loaded by the controller at the power output terminal. Attached Figure Description

[0037] Figure 1 An example of a fully parallel LED colored light with controllable flashing bulbs;

[0038] Figure 2 The controlled flash bubble in the embodiment;

[0039] Figure 3 The controllable flash bubble driver chip in the embodiment;

[0040] Figure 4 The controller in the embodiment;

[0041] Figure 5 This is a control signal diagram from an embodiment. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0043] Example

[0044] like Figure 1 As shown, the fully parallel LED colored light 1 with controllable flashing bulbs includes:

[0045] Controller 11, LED string 12;

[0046] The controller supplies power to the light string 12 at the positive terminal 111 and the negative terminal 112, and applies a control signal to the negative terminal 112;

[0047] The light string 12 includes 6 ordinary cool white LEDs, namely 121, 122, 123, 124, 125, and 126; and 3 controllable flashing bulbs, namely 127, 128, and 129. The 6 ordinary cool white LEDs and 3 controllable flashing bulbs are connected in the same parallel current path.

[0048] The controller is connected to the positive terminal of a 3.3V power supply at input terminal 13 and to the negative terminal of a 3.3V power supply at input terminal 14.

[0049] The structure of controllable flash bubble 2 is as follows Figure 2 As shown, the controllable flashing bulbs 127, 128, and 129 in the LED colored light 1 provided in this embodiment all adopt... Figure 2 The structure shown is as follows. The controllable flash bubble 2 structure is as follows: Figure 2As shown, it includes a driver chip 21 and a controlled warm white LED 22. The driver chip 21 receives control signals and controls the controlled warm white LED 22 to turn it on or off. Figure 2 As shown, the output terminal of the driver chip 21 is connected to the cathode of the controlled warm white LED 22, and the power supply terminal of the driver chip 21 is connected to the anode of the controlled warm white LED 22. When the output terminal of the driver chip 21 is on or outputs a low level, current flows through the controlled warm white LED 22, and the controlled warm white LED 22 emits light; when the output terminal of the driver chip 21 is off or outputs a high level, no current flows through the controlled warm white LED 22, and the controlled warm white LED 22 is off.

[0050] The structure of the driver chip 3 is as follows Figure 3 As shown (driver chip 21 adopts...) Figure 3 As shown in the diagram, the driver chip 3 includes: a control signal triggering arithmetic unit 31, used to perform calculations based on the control signal input from the power line and output the calculation results; a charging unit 32, used to provide a power supply level to the control signal triggering arithmetic unit 31 based on the control signal input from the power line, charging when the control signal is high and discharging when the control signal is low; and an initialization unit 23, used to initialize the control signal triggering arithmetic unit 31 based on the power supply level provided by the charging unit 32.

[0051] In this embodiment, the control signal triggering operation unit 31 performs pulse modulo 2 counting operation based on the control signal: the first pulse triggers the counting, and the counting result is 1 (high level), driving the controlled warm white LED 22 to be dark; the second pulse triggers the counting, and the counting result is 0 (low level), driving the controlled warm white LED 22 to be bright.

[0052] The driver chip 3 in this embodiment does not contain an address, and the control signals also do not include address signals. The three controllable flashing bulbs 127, 128, and 129 in this embodiment are controlled by the control signals in the same manner.

[0053] like Figure 4 As shown, controller 4 (controller 11 in this embodiment adopts...) Figure 4The structure shown includes an NMOS 41 acting as a controllable switch: the drain 411 of the NMOS is grounded, the source 412 serves as the negative output 112 of the controller 4, and the gate 413 is connected to the microprocessor 42; the input terminal 43 of the controller 4 is connected to the positive terminal of the 3.3V power supply and serves as the positive output 111 of the controller; the input terminal 44 of the controller 4 is connected to the negative terminal of the 3.3V power supply and shares a common ground with the drain 411 of the NMOS; the power supply terminal 421 of the microprocessor 42 is connected to the input terminal 43 of the controller 4, and the ground 422 of the microprocessor 42 is connected to the input terminal 44 of the controller 4, which is connected to the negative terminal of the 3.3V power supply. By running a software program on the microprocessor 42, the switching of the NMOS 41 is controlled, forming a control signal, which is applied to the negative terminal of the power supply line.

[0054] The timing diagram of the control signal relative to the reference ground of the negative terminal 112 of the controller 11 in this embodiment is as follows: Figure 5 As shown in the diagram, the high level of the pulse is 3.3V, and the low level is 0V (reference ground level). At time T1, after the first pulse of the control signal arrives, in this embodiment, the control signal triggering arithmetic unit 31 of the driver chip 3 performs pulse modulo 2 counting operations based on the control signal. The counting result is 1 (high level), driving the controlled warm white LED 22 to be dark. At time T2, that is, after an interval of (T2-T1), the second pulse of the control signal arrives, and the counting result is 0 (low level), driving the controlled warm white LED 22 to be bright. At time T3, the third pulse of the control signal arrives, and the counting result is 1 (high level), driving the controlled warm white LED 22 to be dark. From Figure 5 The timing diagram of the control signals clearly shows that by controlling the duration of (T2-T1), the duration for which the controlled warm white LED 22 is dark can be controlled; and by controlling the duration of (T3-T2), the duration for which the controlled warm white LED 22 is bright can be controlled. Therefore, by controlling (T3-T2) and (T2-T1), different flickering frequencies can be achieved. Furthermore, the flickering frequency can be dynamically changed by running a software program on the microprocessor 42. In this embodiment, Figure 5 The pulse high level shown is less than 1ms and greater than 10ns, and the human eye cannot perceive the effect of the pulse high level on the colored lights.

[0055] This invention enables LED lights to achieve a blinking function or blinking mode that can be controlled by the controller by using controllable flashing bulbs spaced between constantly lit LEDs. The controllable flashing bulbs receive control signals loaded by the controller at the power output terminal.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An LED colored light with controllable flashing bulb, characterized in that, The LED colored lights include: Controller, string lights; The controller output terminals are connected to the light string, and the controller supplies power to the light string at the positive and negative terminals and applies a control signal to the positive and / or negative terminals. The light string includes several LEDs and several controllable flashing bulbs, and the several LEDs and several controllable flashing bulbs are in the same current path; The controllable flashing bulb receives the control signal to achieve a controllable flashing effect; The controllable flash bubble includes: The system includes a driver chip and a controlled LED, wherein the driver chip receives the control signal and controls the controlled LED to achieve a controllable blinking effect. The plurality of LEDs are constant-on LEDs, and controllable flashing bulbs are assembled at intervals among the plurality of constant-on LEDs; The aforementioned LEDs are ordinary light-emitting diodes without built-in driver chips.

2. The LED colored light with controllable flashing bulb as described in claim 1, characterized in that, The driver chip is triggered by the control signal to perform calculations, and the calculation results drive the controlled LED.

3. The LED colored light with controllable flashing bulb as described in claim 1, characterized in that, The control signal includes an address signal. The driver chip receives the address signal and compares it with the driver chip address. When the received address signal matches the driver chip address, the control signal is executed.

4. The LED colored light with controllable flashing bulb as described in claim 2, characterized in that, The operation is an arithmetic operation, or a logical operation, or a combination of arithmetic and logical operations.

5. The LED colored light with controllable flashing bulb as described in claim 3, characterized in that, The driver chip performs pulse counting operations based on the control signal.

6. The LED colored light with controllable flashing bulb as described in claim 3, characterized in that, The driver chip performs encoding and decoding operations on the control signal, and the pulse high and low level widths of the control signal correspond to the encoded information.

7. The LED colored light with controllable flashing bulb as described in claim 6, characterized in that, Different logical encoding information can be represented by high-level signals of different lengths, or low-level signals of different lengths, or combinations of high-level signals of different lengths and low-level signals of different lengths.

8. The LED colored light with controllable flashing bulb as described in claim 3, characterized in that, The driver chip performs modulation and demodulation operations on the control signal based on current or voltage frequency, and drives the controlled LED according to the modulation and demodulation operation results.

9. The LED colored light with controllable flashing bulb as described in claim 3, characterized in that, The controller includes a controllable switch module, through which the control signal is loaded.

10. The LED colored light with controllable flashing bulb as described in claim 9, characterized in that, The controllable switch module includes a first controllable switch and an intermediate level module. When the first controllable switch is turned off, the intermediate level module generates a second level, and the control signal is loaded by switching between the power supply level and the second level.

11. The LED colored light with controllable flashing bulb as described in claim 9, characterized in that, The control signal is applied by controlling the controllable switch module to turn on and off.

12. The LED colored light with controllable flashing bulb as described in claim 9, characterized in that, The controllable switch module is a first controllable switch, and the control signal is applied by controlling the first controllable switch to turn on and off.

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