Bidirectional dimming control module

Abstract

The utility model relates to the technical field of light source control, and particularly discloses a bidirectional light-changing control module which comprises a first input end, a second input end, a first light-changing control IC chip, a second light-changing control IC chip, a first light-emitting module, a second light-emitting module and a plurality of rectifier diodes. The first light-changing control IC chip and the second light-changing control IC chip are respectively connected with the first light-emitting module, the second light-emitting module and the rectifier diode, and the rectifier diode is respectively connected with the first input end and the second input end. According to the utility model, the first light-changing control IC chip, the second light-changing control IC chip and the rectifier diode are matched to control the on-off of the first light-emitting module and the second light-emitting module, so that the switching of color temperature is realized, an intelligent driving power supply or a dial switch is not needed to adjust the color temperature, the wiring is simple, the cost is lower, the use is more convenient, and the cost is lower. And diversified use requirements of users can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of light source control, in particular to a bidirectional light-changing control module. Background Art

[0002] LED light strings are constructed using LEDs as point light sources connected in series via wires. LEDs have unidirectional conductivity and an internal PN junction. They emit light only when the operating voltage aligns with the LED's conduction direction (i.e., the PN junction). Existing LEDs typically use intelligent power supplies or DIP switches to adjust the color temperature. These switches adjust the color temperature range by setting multiple settings, with different settings corresponding to different color temperatures.

[0003] For example, the Chinese utility model patent application number CN202322481088.0 discloses an LED color temperature controller, including a power module, a control chip, a color temperature selection unit, and a switch control unit; the power module provides a power supply electrical connection to the control chip and two groups of LED light strings; the control chip is electrically connected to the color temperature selection unit and the switch control unit. By setting the color temperature selection unit and the switch control unit, the user can select the gear position of the pull switch according to actual usage needs to change the level signal input to the control chip. The control chip outputs a corresponding duty cycle based on the level signal, and then generates a pair of complementary PWM signals and outputs them to the switch control unit respectively to mix and adjust the two groups of LED light strings with different color temperatures, so that the LED light strings exhibit corresponding color temperatures; by adjusting the color temperature by pulling the pull switch, the utility model has the advantages of convenient adjustment and meets the lighting needs of users in various usage scenarios.

[0004] For example, the Chinese utility model patent application number CN202122455693.1 discloses an LED color temperature switching control module, the key points of its technical solution are: it includes an EMC circuit, a DC-DC power supply circuit, a control circuit and a dual color temperature switching circuit, the EMC circuit and the DC-DC power supply circuit are both electrically connected to the control circuit, the control circuit is electrically connected to the dual color temperature switching circuit, the EMC circuit and the DC-DC power supply circuit are electrically connected to the driver of the LED lamp board, and the dual color temperature switching circuit is electrically connected to the LED light board; using this LED color temperature switching control module, it only needs to be installed between the driver and the LED light board, the input end is connected to the output of the constant current driver, and the output end is connected to the dual color temperature LED light board, and the color temperature switching is completed by the on and off time of the power switch.

[0005] However, although existing LEDs can achieve basic color temperature adjustment functions, they all use intelligent driving power supplies or dip switches to adjust the color temperature, which is costly, has complex wiring, is inconvenient to use, and is difficult to meet user needs. Utility Model Content

[0006] The technical problem to be solved by the present invention is that, in response to the above-mentioned defects of the prior art, a bidirectional dimming control module is provided. By setting a first dimming control IC chip, a second dimming control IC chip and a rectifier diode to cooperate with each other to control the switches of the first light-emitting module and the second light-emitting module, the color temperature switching is realized, that is, different color temperature change sequences are achieved on the same light source, without the need to use an intelligent driving power supply or a dip switch to adjust the color temperature. The wiring is simple, the cost is low, and it is more convenient to use, which can meet the diverse usage needs of users.

[0007] In order to solve the above technical problems, the technical solution of the utility model is:

[0008] A bidirectional light-changing control module includes a first input terminal, a second input terminal, a first light-changing control IC chip, a second light-changing control IC chip, a first light-emitting module, a second light-emitting module, and a plurality of rectifier diodes. The first light-changing control IC chip and the second light-changing control IC chip are respectively connected to the first light-emitting module, the second light-emitting module, and the rectifier diodes. The rectifier diodes are respectively connected to the first input terminal and the second input terminal.

[0009] Preferably, the rectifier diode includes a first rectifier diode, a second rectifier diode, a third rectifier diode and a fourth rectifier diode, the first rectifier diode is respectively connected to the first input end and the first dimming control IC chip, the second rectifier diode is respectively connected to the second input end and the first dimming control IC chip, the third rectifier diode is respectively connected to the second input end and the second dimming control IC chip, and the fourth rectifier diode is respectively connected to the first input end and the second dimming control IC chip.

[0010] Preferably, the anode of the first rectifier diode and the cathode of the fourth rectifier diode are both connected to the first input end, and the cathode of the second rectifier diode and the anode of the third rectifier diode are both connected to the second input end.

[0011] Preferably, a constant current diode is connected between the first rectifier diode, the first dimming control IC chip and the first light-emitting module, and the anode of the constant current diode is connected to the cathode of the first rectifier diode and the cathode of the third rectifier diode respectively.

[0012] Preferably, a first constant current transistor is connected between the first light-changing control IC chip and the first light-emitting module, and a second constant current transistor is connected between the first light-changing control IC chip and the second light-emitting module.

[0013] Preferably, a first resistor is connected between the first constant current transistor and the first rectifier diode, and a second resistor is connected between the second constant current transistor and the first rectifier diode.

[0014] By adopting the above technical solution, the utility model provides a bidirectional dimming control module with the following beneficial effects: the first dimming control IC chip and the second dimming control IC chip in the bidirectional dimming control module are respectively connected to the first light-emitting module, the second light-emitting module and the rectifier diode, the rectifier diode is respectively connected to the first input end and the second input end, the rectifier diode acts on a unidirectional current, the positive and negative power supply pins of the first dimming control IC are used for power supply, and the output end is connected to the negative pole of the first light-emitting module and the second light-emitting module. By setting the first dimming control IC chip, the second dimming control IC chip and the rectifier diode to cooperate in controlling the switches of the first light-emitting module and the second light-emitting module, the color temperature is switched, that is, different color temperature change sequences are achieved in the same light source. Compared with the traditional color temperature adjustment method, the bidirectional dimming control module does not need to use an intelligent driving power supply or a dip switch to adjust the color temperature. The wiring is simple, the cost is low, and it is more convenient to use, which can meet the diverse usage needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a circuit diagram of embodiment 1 of the present utility model;

[0016] Figure 2 This is a circuit diagram of the second embodiment of the present utility model;

[0017] Figure 3 This is a circuit diagram of embodiment 3 of the present utility model;

[0018] Figure 4 This is a circuit diagram of the fourth embodiment of the present utility model;

[0019] In the figure, 1-first input end, 2-second input end, 3-first light-changing control IC chip, 4-second light-changing control IC chip, 5-first light-emitting module, 6-second light-emitting module, 7-first rectifier diode, 8-second rectifier diode, 9-third rectifier diode, 10-fourth rectifier diode, 11-constant current diode, 12-first constant current transistor, 13-second constant current transistor, 14-first resistor, 15-second resistor. DETAILED DESCRIPTION

[0020] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation to the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0023] like Figure 1As shown, the bidirectional dimming control module includes a first input terminal 1, a second input terminal 2, a first dimming control IC chip 3, a second dimming control IC chip 4, a first light-emitting module 5, a second light-emitting module 6 and a plurality of rectifier diodes. The first dimming control IC chip 3 and the second dimming control IC chip 4 are respectively connected to the first light-emitting module 5, the second light-emitting module 6 and the rectifier diodes, and the rectifier diodes are respectively connected to the first input terminal 1 and the second input terminal 2. It can be understood that the first input terminal 1 and the second input terminal 2 can both be warm light input terminals or cold light input terminals, etc.; the first light-emitting module 5 and the second light-emitting module 6 can both be composed of a plurality of light-emitting diodes; the first dimming control IC chip 3 and the second dimming control IC chip 4 can both be S4422BX series chips, etc., which are dedicated chips for switching color temperature adjustment, with two built-in 40V MOS tubes, simplifying the peripheral circuit structure, and using mature current detection technology to determine the switch state, ensuring the state consistency when multiple power supplies are applied simultaneously, can be used in an isolated flyback or Buck structure, and can also be used with a resistor-capacitor power supply to achieve switch color adjustment, which is convenient to design; the rectifier diode is a unidirectional diode, and multiple embodiments of the present invention can be connected in series or in parallel to achieve the same effect, and the input can be either a constant current or a constant voltage.

[0024] Specifically, the rectifier diodes include a first rectifier diode 7, a second rectifier diode 8, a third rectifier diode 9, and a fourth rectifier diode 10. The first rectifier diode 7 is connected to the first input terminal 1 and the first dimming control IC chip 3, respectively. The second rectifier diode 8 is connected to the second input terminal 2 and the first dimming control IC chip 3, respectively. The third rectifier diode 9 is connected to the second input terminal 2 and the second dimming control IC chip 4, respectively. The fourth rectifier diode 10 is connected to the first input terminal 1 and the second dimming control IC chip 4, respectively. It can be understood that the anode of the first rectifier diode 7 and the cathode of the fourth rectifier diode 10 are both connected to the first input terminal 1, and the cathode of the second rectifier diode 8 and the anode of the third rectifier diode 9 are both connected to the second input terminal 2. When the first input terminal 1 is connected to the positive pole of warm light, the first dimming control IC chip 3 operates; when the second input terminal 2 is connected to the positive pole of cold light, the second dimming control IC chip 4 operates.

[0025] Specifically, if Figure 2 As shown, in the second embodiment, a constant current diode 11 is connected between the first rectifier diode 7, the first dimming control IC chip 3, and the first light-emitting module 5. The anode of the constant current diode 1 is respectively connected to the cathode of the first rectifier diode 7 and the cathode of the third rectifier diode 9. It can be understood that the constant current diode 11 is a two-pin constant current diode that acts on a constant current. The first rectifier diode 7 and the third rectifier diode 9 can share a constant current diode, or they can each be connected to a constant current diode.

[0026] Specifically, if Figure 3 As shown, in the third embodiment, a first constant current transistor 12 is connected between the first light-changing control IC chip 3 and the first light-emitting module 5, and a second constant current transistor 13 is connected between the first light-changing control IC chip 3 and the second light-emitting module 6. It is understandable that the first constant current transistor 12 and the second constant current transistor 13 can both be three-pin constant current ICs, with the middle pin being the power supply pin for supplying power to the first light-emitting module 5 and the second light-emitting module 6.

[0027] Specifically, if Figure 4 As shown, in the fourth embodiment, a first resistor 14 is connected between the first constant current transistor 12 and the first rectifier diode 7, and a second resistor 15 is connected between the second constant current transistor 13 and the first rectifier diode 7. It can be understood that this embodiment adds two resistors on the basis of the third embodiment, and the first resistor 14 and the second resistor 15 are both used to draw power for the IC; the first resistor 14 and the second resistor 15 can also be replaced by diodes. When the first resistor 14 is replaced by a diode, one end thereof connected to the first constant current rectifier diode 7 is the anode and the other end is the cathode; when the second resistor 15 is replaced by a diode, one end thereof connected to the first constant current rectifier diode 7 is the anode and the other end is the cathode; when W is the positive electrode, the color temperature sequence is 1, 12, 2 or 1, 2, 12; when C is the positive electrode, the color temperature sequence is 2, 12, 1 or 2, 1, 12, that is, the same light source achieves different color temperature lighting sequences.

[0028] It can be understood that the present invention has a reasonable design and unique structure. By setting the first dimming control IC chip 3, the second dimming control IC chip 4 and the rectifier diode to cooperate with the control of the switch of the first light-emitting module 5 and the second light-emitting module 6, the color temperature switching is realized, that is, different color temperature change sequences are realized in the same light source. Compared with the traditional color temperature adjustment method, the bidirectional dimming control module does not need to use an intelligent driving power supply or a dip switch to adjust the color temperature. The wiring is simple, the cost is low, and it is more convenient to use, which can meet the diverse usage needs of users.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A bidirectional light-changing control module, characterized by: The device comprises a first input terminal, a second input terminal, a first light-changing control IC chip, a second light-changing control IC chip, a first light-emitting module, a second light-emitting module and a plurality of rectifier diodes. The first light-changing control IC chip and the second light-changing control IC chip are respectively connected to the first light-emitting module, the second light-emitting module and the rectifier diodes. The rectifier diodes are respectively connected to the first input terminal and the second input terminal.

2. The bidirectional light-changing control module according to claim 1, characterized in that: The rectifier diodes include a first rectifier diode, a second rectifier diode, a third rectifier diode and a fourth rectifier diode. The first rectifier diode is respectively connected to the first input end and the first dimming control IC chip, the second rectifier diode is respectively connected to the second input end and the first dimming control IC chip, the third rectifier diode is respectively connected to the second input end and the second dimming control IC chip, and the fourth rectifier diode is respectively connected to the first input end and the second dimming control IC chip.

3. The bidirectional light-changing control module according to claim 2, characterized in that: The anode of the first rectifier diode and the cathode of the fourth rectifier diode are both connected to the first input end, and the cathode of the second rectifier diode and the anode of the third rectifier diode are both connected to the second input end.

4. The bidirectional light-changing control module according to claim 2, characterized in that: A constant current diode is connected between the first rectifier diode, the first dimming control IC chip and the first light-emitting module, and the anode of the constant current diode is connected to the cathode of the first rectifier diode and the cathode of the third rectifier diode respectively.

5. The bidirectional light-changing control module according to claim 2, characterized in that: A first constant current transistor is connected between the first light-changing control IC chip and the first light-emitting module, and a second constant current transistor is connected between the first light-changing control IC chip and the second light-emitting module.

6. The bidirectional light-changing control module according to claim 5, characterized in that: A first resistor is connected between the first constant current transistor and the first rectifier diode, and a second resistor is connected between the second constant current transistor and the first rectifier diode.

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