LED lamp driven by two-line circuit

Abstract

The utility model provides an LED lamp driven by a two-line circuit, which comprises an LED lamp, and a red path control signal discriminating circuit, a green path control signal discriminating circuit and a blue path control signal discriminating circuit which are electrically connected with the LED lamp, the LED lamp comprises a red lamp bead, a green lamp bead and a blue lamp bead, the red circuit control signal discriminating circuit is used for discriminating red circuit control signals carried in the control signals transmitted by the two-line circuit and outputting the discriminated red circuit control signals to the red lamp bead; the green path control signal discriminating circuit is used for discriminating green path control signals carried in the control signals transmitted by the two-line circuit and outputting the discriminated green path control signals to the green lamp beads; and the blue-path control signal discriminating circuit is used for discriminating blue-path control signals carried in the control signals transmitted by the two-line circuit and outputting the discriminated blue-path control signals to the blue lamp beads.

Description

Technical Field

[0001] The utility model relates to an LED lamp, in particular to an LED lamp driven by a two-wire circuit. Background Art

[0002] In a traditional lamp system, electric energy and control signals are simultaneously transmitted through a four-wire system to drive the lamp. The four-wire system includes three RGB signal lines and an electric energy circuit. Compared with a two-wire system, since the four-wire system uses more wires, the installation is not only messy and difficult to organize, resulting in higher installation costs, usage costs, and maintenance costs than the two-wire system. If the three RGB signal lines are combined and transmitted, and then the lamp discriminates the combined signal, the cumbersome traditional four-wire system can be changed to a two-wire system. Therefore, based on a two-wire system that can transmit combined control signals, an LED lamp driven by a two-wire circuit is proposed. Summary of the Utility Model

[0003] Aiming at the defects of current four-wire-driven LED lamps, the utility model provides an LED lamp driven by a two-wire circuit. A discrimination circuit is arranged in the lamp to discriminate the combined signal in the two-wire system and then drive the red, green, and blue lamp beads in the LED lamp.

[0004] The utility model provides an LED lamp driven by a two-wire circuit, which includes an LED lamp and a red path control signal discrimination circuit, a green path control signal discrimination circuit, and a blue path control signal discrimination circuit that are electrically connected to the LED lamp. The LED lamp includes red lamp beads, green lamp beads, and blue lamp beads. Among them, the red path control signal discrimination circuit is used to discriminate the red path control signal carried in the control signal transmitted by the two-wire circuit and output the discriminated red path control signal to the red lamp beads; the green path control signal discrimination circuit is used to discriminate the green path control signal carried in the control signal transmitted by the two-wire circuit and output the discriminated green path control signal to the green lamp beads; the blue path control signal discrimination circuit is used to discriminate the blue path control signal carried in the control signal transmitted by the two-wire circuit and output the discriminated blue path control signal to the blue lamp beads.

[0005] Preferably, the LED lamp includes at least one common anode LED lamp or at least one common cathode LED lamp.

[0006] Preferably, the LED lamp further includes an anti-reverse correction circuit, and the anti-reverse correction circuit is arranged between the red path control signal discrimination circuit, the green path control signal discrimination circuit, and / or the blue path control signal discrimination circuit and the two-wire circuit.

[0007] Preferably, the reverse connection correction circuit is a bridge rectifier circuit, which includes four diodes connected end to end. Between every two diodes, there are successively connected the positive wire of the two-wire circuit, the ground wire, the negative wire of the two-wire circuit, and the common wire between the red path control signal discrimination circuit, the green path control signal discrimination circuit, and / or the blue path control signal discrimination circuit.

[0008] Preferably, the red path control signal discrimination circuit is used to discriminate the red path control signal with a level of 6V carried in the control signal transmitted by the two-wire circuit and output the discriminated red path control signal with a level of 6V to the red LED;

[0009] The green path control signal discrimination circuit is used to discriminate the green path control signal with a level of 8V carried in the control signal transmitted by the two-wire circuit and output the discriminated green path control signal with a level of 8V to the green LED;

[0010] The blue path control signal discrimination circuit is used to discriminate the blue path control signal with a level of 9V carried in the control signal transmitted by the two-wire circuit and output the discriminated blue path control signal with a level of 9V to the blue LED.

[0011] Preferably, the conduction voltage value of the red path control signal discrimination circuit is 6 - 6.8V, the conduction voltage value of the green path control signal discrimination circuit is 8 - 8.2V, and the conduction voltage value of the blue path control signal discrimination circuit is 9 - 9.1V.

[0012] Preferably, the red control signal discrimination circuit is provided with a diode with a conduction voltage below 6.8V, the green control signal discrimination circuit is provided with a diode with a conduction voltage above 6.8V and a diode with a conduction voltage below 8.2V, and the blue control signal discrimination circuit is provided with a diode with a conduction voltage above 9V.

[0013] Preferably, the LED lamp includes at least one common anode LED lamp and at least one common cathode LED lamp.

[0014] Preferably, the red LED of the common anode LED lamp is connected in series with the red LED of the common cathode LED lamp, and a triode is arranged between the red LED of the common anode LED lamp and the red LED of the common cathode LED lamp. The green LED of the common anode LED lamp is connected in series with the green LED of the common cathode LED lamp, and a triode is arranged between the green LED of the common anode LED lamp and the green LED of the common cathode LED lamp. The blue LED of the common anode LED lamp is connected in series with the blue LED of the common cathode LED lamp, and a triode is arranged between the blue LED of the common anode LED lamp and the green LED of the common cathode LED lamp.

[0015] The beneficial effects achieved by an LED lamp driven by a two - wire circuit provided by the present utility model are as follows:

[0016] By setting a control signal discrimination circuit inside the lamp, the present utility model can distinguish the control signals for driving RGB lamp beads by discriminating composite signals and then directly control the lamp. Different from the existing lamp control system, the driving of this lamp no longer requires a traditional four - wire system for transmission, but can be controlled by a two - wire system that can transmit composite level signals. The appearance of this lamp supports the transformation of the existing four - wire control system. Only a controller or converter needs to be connected to the input end of the original four - wire control system to execute the output of the composite signal, which can reduce the transformation cost of the existing four - wire system, enabling the control of the lamp product to be achieved through a two - wire transmission system, and reducing the wiring cost, usage cost, and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the logic structure of an LED lamp driven by a two - wire circuit provided by the present utility model;

[0018] Figure 2 is a signal change diagram of the process of discriminating a composite signal into three control signals by an LED lamp driven by a two - wire circuit provided by the present utility model;

[0019] Figure 3 is a circuit diagram of an LED lamp driven by a two - wire circuit provided by the present utility model;

[0020] Figure 4 is a circuit diagram of another LED lamp driven by a two - wire circuit provided by the present utility model;

[0021] Figure 5 is a schematic diagram of the structure of a converter cooperating with the LED lamp driven by a two - wire circuit provided by the present utility model;

[0022] Figure 6 is a schematic diagram of the structure of a controller cooperating with the LED lamp driven by a two - wire circuit provided by the present utility model;

[0023] Figure 7 is a schematic diagram of the structure of an LED lamp (load) driven by a two - wire circuit provided by the present utility model connected to a two - wire transmission circuit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes an LED lamp driven by a two - wire circuit and a cash deposit and withdrawal machine provided by the present utility model in conjunction with the drawings. It should be noted that only an optimal technical solution is used below to elaborate in detail on the technical solution and design principle of the present utility model.

[0025] Throughout the description of the present utility model, it should be noted that for orientation terms, such as the terms "center", "lateral", "longitudinal", "sideways", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and position relationship based on the orientation or position relationship shown in the drawings or commonly used by those skilled in the art, are 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 should not be construed as limiting the specific protection scope of the present utility model

[0026] Refer to Figure 1 、 Figure 2 and Figure 7 , the LED lamp driven by a two-wire circuit provided by the present utility model, that is, the load in Figure 7 , includes an LED lamp and a red path control signal discrimination circuit, a green path control signal discrimination circuit, and a blue path control signal discrimination circuit that are electrically connected to the LED lamp. The LED lamp includes red lamp beads, green lamp beads, and blue lamp beads. Among them, the red path control signal discrimination circuit is used to discriminate the red path control signal carried in the control signal transmitted by the two-wire circuit and output the discriminated red path control signal to the red lamp beads; the green path control signal discrimination circuit is used to discriminate the green path control signal carried in the control signal transmitted by the two-wire circuit and output the discriminated green path control signal to the green lamp beads; the blue path control signal discrimination circuit is used to discriminate the blue path control signal carried in the control signal transmitted by the two-wire circuit and output the discriminated blue path control signal to the blue lamp beads.

[0027] Combined with Figure 2 , it should be noted that the composite control signal COUT transmitted in the two-wire circuit carries the RGB control signal through different level representation methods. It can be understood that the red path control signal corresponds to one level, the green path control signal corresponds to one level, and the blue path control signal corresponds to one level. In the specific embodiment provided by the present utility model, after discrimination, the level of the BOUT' blue path control signal obtained from the composite control signal COUT is 9V, the level of the GOUT' green path control signal is 8V, and the level of the ROUT' red path control signal is 6V.

[0028] Combined with Figure 1 、 Figure 2 and Figure 3 、 Figure 4, the working process of the LED lamp is as follows: after receiving a composite control signal from a two-wire circuit, the red path control signal discrimination circuit is used to discriminate the red path control signal with a level of 6V carried in the control signal transmitted by the two-wire circuit and output the discriminated red path control signal with a level of 6V to the red LED; the green path control signal discrimination circuit is used to discriminate the green path control signal with a level of 8V carried in the control signal transmitted by the two-wire circuit and output the discriminated green path control signal with a level of 8V to the green LED; the blue path control signal discrimination circuit is used to discriminate the blue path control signal with a level of 9V carried in the control signal transmitted by the two-wire circuit and output the discriminated blue path control signal with a level of 9V to the blue LED

[0029] In some embodiments, in combination with Figure 2 and Figure 3 , when the discrimination circuit discriminates the composite control signal: when the level of a section of misaligned control signal is lower than A, this section of misaligned control signal is discriminated as a red path control signal; when the level of a section of misaligned control signal is higher than B and lower than C, this section of misaligned control signal is discriminated as a green path control signal; when the level of a section of misaligned control signal is higher than D, this section of misaligned control signal is discriminated as a blue path control signal. Among them, in this specific embodiment, the values of A, B, C, and D can be defined according to the actual level of the control signal or judged based on range values. For example, when the voltage value of a section of misaligned control signal is between 6 and 6.8V, this section of misaligned control signal is discriminated as a red path control signal; when the voltage value of a section of misaligned control signal is higher than 6.8V and between 8 and 8.2V, this section of misaligned control signal is discriminated as a green path control signal; when the voltage value of a section of misaligned control signal is between 9 and 9.1V, this section of misaligned control signal is discriminated as a blue path control signal. Since there is a certain fluctuation in the transmission of the control signal, range values can be set for discrimination.

[0030] Refer to Figure 3 and Figure 4 , in a specific embodiment, the reverse connection correction circuit is a bridge rectifier circuit. The bridge rectifier circuit includes four diodes connected end to end. Between every two diodes, the positive wire of the two-wire circuit, the ground wire, the negative wire of the two-wire circuit, and the common wire between the red path control signal discrimination circuit, the green path control signal discrimination circuit, and / or the blue path control signal discrimination circuit are sequentially connected respectively. This reverse connection correction circuit can enable the lamp to be connected to the two-wire circuit regardless of the specified connection of the positive and negative poles, enhancing the versatility.

[0031] In combination with Figure 3, wherein the red path control signal discrimination circuit sequentially includes a diode D7, a resistor R26, a resistor R25, a triode Q7, a resistor R27, and a triode Q8 connected electrically in sequence; the green path control signal discrimination circuit sequentially includes a diode D8, a resistor R29, a resistor R28, a triode Q9, a resistor R30, a diode D9, and a triode Q10 connected electrically in sequence; the blue path control signal discrimination circuit sequentially includes a diode D10, a resistor R32, a resistor R31, and a triode Q11 connected electrically in sequence. The LED lamp includes a common anode LED lamp, and the common anode LED lamp can maximize the utilization of the control signal energy. It should be noted that in this specific embodiment, the conduction voltage value of the red path control signal discrimination circuit is 6 - 6.8V, the conduction voltage value of the green path control signal discrimination circuit is 8 - 8.2V, and the conduction voltage value of the blue path control signal discrimination circuit is 9 - 9.1V. Among them, the red control signal discrimination circuit is provided with a diode D7 whose conduction voltage is below 6.8V, the green control signal discrimination circuit is provided with a diode D8 whose conduction voltage is above 6.8V and a diode D9 whose conduction voltage is below 8.2V, and the blue control signal discrimination circuit is provided with a diode D10 whose conduction voltage is above 9V.

[0032] Combined with Figure 4 , in some embodiments, the LED lamp in the load module includes a common anode LED lamp and a common cathode LED lamp. The red lamp beads of the common anode LED lamp and the red lamp beads of the common cathode LED lamp are connected in series, and a triode is arranged between the red lamp beads of the common anode LED lamp and the red lamp beads of the common cathode LED lamp. The green lamp beads of the common anode LED lamp and the green lamp beads of the common cathode LED lamp are connected in series, and a triode is arranged between the green lamp beads of the common anode LED lamp and the green lamp beads of the common cathode LED lamp. The blue lamp beads of the common anode LED lamp and the blue lamp beads of the common cathode LED lamp are connected in series, and a triode is arranged between the blue lamp beads of the common anode LED lamp and the green lamp beads of the common cathode LED lamp. The common cathode and common anode LED lamps can maximize the utilization of the control signal energy. Of course, the number of the common anode LED lamp and the common cathode LED lamp is not limited to one, and can also be multiple, and their connection methods are similar to those in this embodiment, so no more details will be described here.

[0033] Refer to Figure 2 、 Figure 5 and Figure 6 , which is a converter or controller provided by the present utility model for outputting a composite control signal COUT. Among them, the converter is used to convert the received external control signal into a composite control signal DC12V for output, and the controller is used to generate and output a composite control signal DC12V by itself.

[0034] The utility model can directly control the lamp by setting a control signal discrimination circuit inside the lamp, which can distinguish the control signals for driving the RGB lamp beads by discriminating the composite signals. Different from the existing lamp control system, the driving of this lamp no longer requires a traditional four-wire system for transmission, but can be controlled by a two-wire system that can transmit composite level signals. The appearance of this lamp supports the transformation of the existing four-wire control system. Only a controller or converter needs to be connected to the input end of the original four-wire control system to execute the output of the composite signal, which can reduce the transformation cost of the existing four-wire system, enabling the control of the lamp product to be achieved through a two-wire transmission system, reducing the wiring cost, usage cost and maintenance cost.

[0035] The above is only the preferred embodiment of the utility model. It should be noted that the above preferred embodiment should not be regarded as a limitation of the utility model. The protection scope of the utility model should be subject to the scope defined by the claims. For those of ordinary skill in the art of this technology, without departing from the spirit and scope of the utility model, several improvements and retouches can also be made, and these improvements and retouches should also be regarded as within the protection scope of the utility model.

Claims

1. A two-wire circuit driven LED lamp, characterized in that: It includes an LED lamp and a red-path control signal identification circuit, a green-path control signal identification circuit, and a blue-path control signal identification circuit electrically connected to the LED lamp. The LED lamp includes red lamp beads, green lamp beads, and blue lamp beads. The red-path control signal identification circuit is used to identify the red-path control signal carried in the control signal transmitted by the two-wire circuit and output the identified red-path control signal to the red lamp beads. The green path control signal identification circuit is used to identify the green path control signal carried in the control signal transmitted by the two-wire circuit and output the identified green path control signal to the green lamp bead; The blue path control signal identification circuit is used to identify the blue path control signal carried in the control signal transmitted by the two-wire circuit and output the identified blue path control signal to the blue lamp bead.

2. The LED lamp driven by the two-wire circuit according to claim 1, characterized in that: The LED lamp includes at least one common anode LED lamp or at least one common cathode LED lamp.

3. The LED lamp driven by the two-wire circuit according to claim 1, characterized in that: The LED lamp further comprises a reverse connection correction circuit, and the reverse connection correction circuit is arranged between the red path control signal identification circuit, the green path control signal identification circuit and / or the blue path control signal identification circuit and the two-wire circuit.

4. The two-wire circuit driven LED lamp according to claim 3, characterized in that: The reverse connection correction circuit is a bridge rectifier circuit, which includes four diodes connected end to end, and the positive line of the two-wire circuit, the ground line, the negative line of the two-wire circuit and the common line between the red control signal discrimination circuit, the green control signal discrimination circuit and / or the blue control signal discrimination circuit are connected in sequence between every two diodes.

5. The two-wire circuit driven LED lamp according to claim 1, characterized in that: The red path control signal identification circuit is used to identify the red path control signal with a level of 6V carried in the control signal transmitted by the two-wire circuit and output the identified red path control signal with a level of 6V to the red lamp bead; The green path control signal identification circuit is used to identify the green path control signal with a level of 8V carried in the control signal transmitted by the two-wire circuit and output the identified green path control signal with a level of 8V to the green lamp bead; The blue path control signal identification circuit is used to identify the blue path control signal with a level of 9V carried in the control signal transmitted by the two-wire circuit and output the identified blue path control signal with a level of 9V to the blue lamp bead.

6. The two-wire circuit driven LED lamp according to claim 1, characterized in that: The on-state voltage value of the red path control signal identification circuit is 6 to 6.8V, the on-state voltage value of the green path control signal identification circuit is 8 to 8.2V, and the on-state voltage value of the blue path control signal identification circuit is 9 to 9.1V.

7. The two-wire circuit driven LED lamp according to claim 6, characterized in that: The red path control signal identification circuit is provided with a diode with a conduction voltage below 6.8V, the green path control signal identification circuit is provided with a diode with a conduction voltage above 6.8V and a diode with a conduction voltage below 8.2V, and the blue path control signal identification circuit is provided with a diode with a conduction voltage above 9V.

8. The two-wire circuit driven LED lamp according to claim 1, characterized in that: The LED lamps include at least one common anode LED lamp and at least one common cathode LED lamp.

9. The two-wire circuit driven LED lamp according to claim 8, characterized in that: The red lamp beads of the common anode LED lamp are connected in series with the red lamp beads of the common cathode LED lamp, and a triode is arranged between the red lamp beads of the common anode LED lamp and the red lamp beads of the common cathode LED lamp, the green lamp beads of the common anode LED lamp are connected in series with the green lamp beads of the common cathode LED lamp, and a triode is arranged between the green lamp beads of the common anode LED lamp and the green lamp beads of the common cathode LED lamp, the blue lamp beads of the common anode LED lamp are connected in series with the blue lamp beads of the common cathode LED lamp, and a triode is arranged between the blue lamp beads of the common anode LED lamp and the green lamp beads of the common cathode LED lamp.

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