CN109041384A - A kind of control circuit and electronic equipment of bi-colour LED - Google Patents
A kind of control circuit and electronic equipment of bi-colour LED Download PDFInfo
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Abstract
The present invention provides the control circuit and electronic equipment of a kind of bi-colour LED, it is related to electronic technology field, it can be in the case where not increasing the interface quantity of connector, reduce the component number on indicator light PCB, to reduce the size of indicator light PCB, and then television set is promoted to develop to narrow frame and lightening direction.The control circuit includes: the driving circuit being located on main control PCB, and the illuminating circuit and the first connector that are located on indicator light PCB, and the first connector includes the first power interface, the first indicator light driving interface and the first ground interface；The power end of illuminating circuit is connected by the power end of the first power interface and driving circuit, the indicator light driving end of illuminating circuit drives end to connect by the indicator light of the first indicator light driving interface and driving circuit, the ground terminal of illuminating circuit is connected by the ground terminal of the first ground interface and driving circuit, and the end IO of driving circuit and the I/O interface of the processor on main control PCB connect.
Description
The application is a divisional application of a Chinese invention patent application 201510497981.X named as a control circuit of a double-color indicator lamp and electronic equipment, which is proposed on 13.08.2015.
Technical Field
The invention relates to the technical field of electronics, in particular to a control circuit of a double-color indicator lamp and electronic equipment.
Background
With the continuous development of electronic technology, more and more electronic products are available. Taking a television as an example, a two-color indicator lamp (i.e., two indicator lamps with different colors) is usually used to indicate the status of the television. For example, a blue indicator light is used to indicate that the television is in an operating state, and a red indicator light is used to indicate that the television is in a standby state.
In the prior art, the drive circuit of the double-color indicator lamp drives the light-emitting circuit of the double-color indicator lamp to work, so that different indicator lamps can emit light when the television is in different states. Specifically, as shown in fig. 1, the driving circuit 1 of the bi-color indicator and the light emitting circuit 2 of the bi-color indicator are both disposed on a Printed Circuit Board (PCB) of the indicator, and the driving circuit 1 and the light emitting circuit 2 are connected to the main control PCB through a connector a disposed on the indicator PCB, where the connector a includes a power interface a1, an Input Output (IO) interface a2, and a ground interface A3. In the implementation of the two-color indicator light shown in fig. 1, although the number of interfaces of the connector a is small, the number of components on the indicator light PCB is large, so that the size of the indicator light PCB is large. Since the indication lamp PCB is generally disposed between the display screen and the bezel of the television, the indication lamp PCB is too large in size to cause the bezel to be wide.
In order to reduce the size of the indicator PCB as shown in fig. 1, so that the bezel of the television is narrower, a two-color indicator implementation as shown in fig. 2 is proposed. As shown in fig. 2, the driving circuit 3 of the bi-color indicator lamp is disposed on the main control PCB, the light emitting circuit 4 of the bi-color indicator lamp is disposed on the indicator lamp PCB, and the light emitting circuit 4 is connected with the driving circuit 3 through a connector B disposed on the indicator lamp PCB, wherein the connector B includes a power source interface B1, two indicator lamp driving interfaces B2 and B3, and a ground interface B4.
In the two implementations of the dual-color indicator shown in fig. 1 and fig. 2, compared with fig. 1, although the number of components on the indicator PCB shown in fig. 2 is reduced, that is, the size of the indicator PCB is reduced, the number of interfaces of the connector B in fig. 2 is increased, and the size of the indicator PCB is also increased, thereby affecting the development of the television toward a narrower frame and a lighter and thinner frame.
Disclosure of Invention
The embodiment of the invention provides a control circuit of a bicolor indicator lamp and electronic equipment, which can reduce the number of components on an indicator lamp PCB under the condition of not increasing the number of interfaces of a connector, thereby reducing the size of the indicator lamp PCB and further promoting the development of a television towards the direction of narrowing a frame and lightening and thinning the frame.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a control circuit for a dual-color indicator light, where the control circuit includes:
the double-color indicator lamp comprises a driving circuit of the double-color indicator lamp, a light-emitting circuit of the double-color indicator lamp and a first connector, wherein the driving circuit is arranged on a main control Printed Circuit Board (PCB), and the light-emitting circuit and the first connector of the double-color indicator lamp are arranged on the indicator lamp PCB; wherein,
the power end of the light-emitting circuit is connected with the power end of the driving circuit through the first power interface, the indicator lamp driving end of the light-emitting circuit is connected with the indicator lamp driving end of the driving circuit through the first indicator lamp driving interface, the grounding end of the light-emitting circuit is connected with the grounding end of the driving circuit through the first grounding interface, and the input/output (IO) end of the driving circuit is connected with an IO interface of a processor arranged on the main control PCB.
In a second aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes:
a main control printed circuit board PCB, an indicator light PCB, and the control circuit of the first aspect.
The embodiment of the invention provides a control circuit of a double-color indicator lamp and electronic equipment, wherein the control circuit comprises a drive circuit of the double-color indicator lamp arranged on a main control PCB, a light-emitting circuit of the double-color indicator lamp arranged on the indicator lamp PCB and a first connector, and the first connector comprises a first power interface, a first indicator lamp drive interface and a first grounding interface; the power end of the light-emitting circuit is connected with the power end of the driving circuit through the first power interface, the indicator lamp driving end of the light-emitting circuit is connected with the indicator lamp driving end of the driving circuit through the first indicator lamp driving interface, the grounding end of the light-emitting circuit is connected with the grounding end of the driving circuit through the first grounding interface, and the IO end of the driving circuit is connected with the IO interface of the processor arranged on the main control PCB.
Based on above-mentioned technical scheme, on the one hand, because the drive circuit setting of double-colored pilot lamp is on main control PCB, and the luminescent circuit setting of double-colored pilot lamp is on pilot lamp PCB, consequently the components and parts quantity on the pilot lamp PCB has reduced, can reduce pilot lamp PCB's size. On the other hand, since the number of the interfaces of the first connector for connecting the driving circuit and the light emitting circuit is still 3 provided on the indicator PCB, the number of the interfaces of the first connector is not increased, and the size of the indicator PCB can be reduced. Compared with the prior art, the control circuit of the double-color indicator lamp provided by the embodiment of the invention can reduce the number of components on the indicator lamp PCB under the condition of not increasing the number of interfaces of the connector, thereby reducing the size of the indicator lamp PCB and further promoting the development of a television towards the direction of narrowing the frame and lightening the thickness.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a dual color indicator lamp implementation provided by the prior art;
FIG. 2 is another two-color indicator light implementation provided by the prior art;
FIG. 3 is a first schematic diagram of a control circuit of a bi-color indicator according to an embodiment of the present invention;
FIG. 4 is a second schematic diagram of a control circuit of a bi-color indicator according to an embodiment of the present invention;
FIG. 5 is a third schematic diagram of a control circuit of a bi-color indicator according to an embodiment of the present invention;
fig. 6 is a fourth schematic diagram of a control circuit of the dual-color indicator according to the embodiment of the present invention;
fig. 7 is a fifth schematic diagram of a control circuit of a bi-color indicator light according to an embodiment of the present invention;
fig. 8 is a sixth schematic diagram of a control circuit of a bi-color indicator according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 3, an embodiment of the present invention provides a control circuit of a bi-color indicator light, where the control circuit may include:
the driving circuit 5 of the double-color indicator lamp is arranged on the main control PCB, and the light-emitting circuit 6 and the first connector 7 of the double-color indicator lamp are arranged on the indicator lamp PCB, and the first connector 7 comprises a first power interface 70, a first indicator lamp driving interface 71 and a first grounding interface 72.
The power end 60 of the light-emitting circuit 6 is connected to the power end 50 of the driving circuit 5 through the first power interface 70, the indicator driving end 61 of the light-emitting circuit 6 is connected to the indicator driving end 51 of the driving circuit 5 through the first indicator driving interface 71, the ground end 62 of the light-emitting circuit 6 is connected to the ground end 52 of the driving circuit 5 through the first ground interface 72, and the IO end 53 of the driving circuit 5 is connected to the IO interface 80 of the processor 8 disposed on the main control PCB.
On one hand, the control circuit of the double-color indicator lamp provided by the embodiment of the invention has the advantages that the driving circuit of the double-color indicator lamp is arranged on the main control PCB, and the light-emitting circuit of the double-color indicator lamp is arranged on the indicator lamp PCB, so that the number of components on the indicator lamp PCB can be reduced, and the size of the indicator lamp PCB can be reduced. On the other hand, since the number of the interfaces of the first connector for connecting the driving circuit and the light emitting circuit is still 3 provided on the indicator PCB, the number of the interfaces of the first connector is not increased, and the size of the indicator PCB can be reduced. Compared with the prior art, the control circuit of the double-color indicator lamp provided by the embodiment of the invention can reduce the number of components on the indicator lamp PCB under the condition of not increasing the number of interfaces of the connector, thereby reducing the size of the indicator lamp PCB and further promoting the development of a television towards the direction of narrowing the frame and lightening the thickness.
The two-color indicator light mentioned in the embodiment of the present invention refers to an indicator light having two different colors.
In the control circuit of the double-color indicator lamp provided by the embodiment of the invention, the processor is also connected with the remote control circuit, when the processor receives a remote control signal sent by the remote control circuit, the processor converts the remote control signal into an IO signal and sends the IO signal to the drive circuit of the double-color indicator lamp through an IO interface of the processor, and under the action of the IO signal, the drive circuit inputs an indicator lamp drive signal to the light-emitting circuit of the double-color indicator lamp, so that the indicator lamp drive signal drives the light-emitting circuit to emit light. Specifically, the indicator driving signal drives a corresponding indicator in the light emitting circuit to emit light.
For example, as shown in fig. 3, the processor 8 sends an IO signal to the driving circuit 5 through an IO interface 80 of the processor 8, and after the IO end 53 of the driving circuit 5 receives the IO signal, under the action of the IO signal, the driving circuit 5 inputs an indicator light driving signal to the indicator light driving end 61 of the light emitting circuit 6 through the indicator light driving end 51 of the driving circuit 5, so that the indicator light driving signal drives the light emitting circuit 6 to emit light. Specifically, the indicator driving signal drives the corresponding indicator in the light emitting circuit 6 to emit light.
As can be understood by those skilled in the art, the processor 8 includes a plurality of IO interfaces, in the embodiment of the present invention, the IO terminal 53 of the driving circuit 5 is connected to one IO interface 80 of the processor 8, and the IO interface 80 may output an IO signal obtained by converting a remote control signal by the processor 8.
Optionally, referring to fig. 3, as shown in fig. 4, the control circuit further includes a second connector 9 disposed on the main control PCB, and the second connector 9 includes a second power interface 90, a second indicator light driving interface 91, and a second ground interface 92.
The power end 50 of the driving circuit 5 is connected to the first power interface 70 through the second power interface 90, the indicator driving end 51 of the driving circuit 5 is connected to the first indicator driving interface 71 through the second indicator driving interface 91, and the ground end 52 of the driving circuit 5 is connected to the first ground interface 72 through the second ground interface 92.
As shown in fig. 4, in the control circuit of the bi-color indicator lamp provided in the embodiment of the present invention, on one hand, the second connector 9 is disposed on the main control PCB, so that the driving circuit 5 and the first connector 7 (or the light emitting circuit 6) can be conveniently connected. On one hand, since the driving circuit 5 and the second connector 9 are both disposed on the main control PCB, the driving circuit 5 and the second connector 9 can be connected by wiring on the PCB, so that the connection stability between the driving circuit 5 and the second connector 9 can be enhanced. On the other hand, the connection stability between the drive circuit 5 and the first connector 7 can be enhanced by connecting the drive circuit 5 to the first connector 7 via the second connector 9, as compared with the case where the drive circuit 5 is directly connected to the first connector 7.
Optionally, the first connector 7 may be a 3-interface socket, and the second connector 9 may also be a 3-interface socket. The first connector 7 and the second connector 9 may be connected by a connecting wire. In this way, the connecting wire between the second connector 9 and the first connector 7 can be easily plugged or replaced.
Optionally, with reference to fig. 4, as shown in fig. 5, in the control circuit of the bi-color indicator lamp provided in the embodiment of the present invention, the driving circuit 5 may include:
a first transistor 54, wherein a collector c1 of the first transistor 54 is connected to the second power interface 90, and an emitter e1 of the first transistor 54 is connected to the second indicator light driving interface 91;
a second transistor 55, wherein an emitter e2 of the second transistor 55 is connected to an emitter e1 of the first transistor 54, a collector c2 of the second transistor 55 is connected to the second ground interface 92, and a base b2 of the second transistor 55 is connected to a base b1 of the first transistor 54;
a third transistor 56, wherein a collector c3 of the third transistor 56 is connected to a base b1 of the first transistor 54, an emitter e3 of the third transistor 56 is connected to the second ground interface 92, and a base b3 of the third transistor 56 is connected to the IO interface 80 of the processor 8;
a first resistor 57, one end of the first resistor 57 is connected to the second power interface 90, and the other end of the first resistor 57 is connected to a collector c3 of the third transistor 56.
The collector c1 of the first transistor 54 and one end of the first resistor 57 are both power terminals 50 of the driving circuit 5, the emitter e1 of the first transistor 54 and the emitter e2 of the second transistor 55 are both indicator driving terminals 51 of the driving circuit 5, the collector c2 of the second transistor 55 and the emitter e3 of the third transistor 56 are both ground terminals 52 of the driving circuit 5, and the base b3 of the third transistor 56 is an IO terminal 53 of the driving circuit 5.
Optionally, in the control circuit of the dual-color indicator shown in fig. 5, the first transistor 54 is an NPN transistor, the second transistor 55 is a PNP transistor, and the third transistor 56 is an NPN transistor.
In the embodiment of the present invention, the first transistor 54 and the second transistor 55 shown in fig. 5 form a push-pull circuit (i.e., a circuit in which two transistors with different polarities are connected). When the push-pull circuit works, two symmetrical transistors, namely the first transistor 54 and the second transistor 55, are respectively responsible for waveform amplification tasks of positive and negative half cycles, so that the first transistor 54 and the second transistor 55 are turned on in turn in a waveform of one cycle, and therefore the push-pull circuit is low in conduction loss and high in conduction efficiency.
Optionally, in the control circuit of the bi-color indicator shown in fig. 5, the resistance of the first resistor 57 is 10000 ohms.
It should be noted that, the resistance value of the first resistor may be set according to actual use requirements, and the present invention is not limited in particular.
Optionally, with reference to fig. 5, as shown in fig. 6, in the control circuit of the dual-color indicator light provided in the embodiment of the present invention, the light-emitting circuit 6 may include:
a first indicator light 63, wherein the negative pole of the first indicator light 63 is connected with the first indicator light driving interface 71;
a second indicator light 64, the positive pole of the second indicator light 64 being connected to the negative pole of the first indicator light 63;
a second resistor 65, wherein one end of the second resistor 65 is connected to the first power interface 70, and the other end of the second resistor 65 is connected to the positive electrode of the first indicator light 63;
and one end of the third resistor 66 is connected to the first ground interface 72, and the other end of the third resistor 66 is connected to the negative electrode of the second indicator lamp 64.
One end of the second resistor 65 is a power end 60 of the light-emitting circuit 6, the negative electrode of the first indicator light 63 and the positive electrode of the second indicator light 64 are both the indicator light driving end 61 of the light-emitting circuit 6, and one end of the third resistor 66 is a ground end 62 of the light-emitting circuit 6.
Optionally, the first indicator light 63 is a light emitting diode (abbreviated as LED), and the second indicator light 64 is a light emitting LED.
Optionally, the resistance of the second resistor 65 is 1000 ohms, and the resistance of the third resistor 66 is 1000 ohms.
It should be noted that, the resistance value of the second resistor and the resistance value of the third resistor may be set according to actual use requirements, and the present invention is not limited specifically.
In the embodiment of the present invention, the first power interface 70, the second power interface 90, the power end 50 of the driving circuit 5, and the power end 60 of the light emitting circuit 6 are all connected to a power supply, wherein the voltage of the power supply is a power voltage.
The first ground interface 72, the second ground interface 92, the ground terminal 52 of the driving circuit 5, and the ground terminal 62 of the light emitting circuit 6 are all connected to a ground reference, wherein the voltage of the ground reference is 0 v.
It should be noted that the specific implementation of the driving circuit 5 and the light-emitting circuit 6 in fig. 5 and fig. 6 is only an exemplary illustration of the implementation of the control circuit of the dual-color indicator lamp provided in the embodiment of the present invention, and the driving circuit and the light-emitting circuit provided in the embodiment of the present invention include, but are not limited to, the driving circuit 5 and the light-emitting circuit 6 in fig. 5 and fig. 6, and all other implementations of the control circuit of the dual-color indicator lamp, in which the driving circuit is disposed on the main control PCB, the light-emitting circuit is disposed on the indicator lamp PCB, and the light-emitting circuit is connected with the driving circuit through a connector disposed on the indicator lamp PCB and having three interfaces, are within the protection scope of the present invention.
Specifically, in the embodiment of the present invention, the driving circuit and the light emitting circuit in the control circuit of the bi-color indicator lamp may be specifically designed according to actual use requirements, for example, adaptive conversion may be performed on the basis of the driving circuit 5 and the light emitting circuit 6 shown in fig. 5 and fig. 6, which is not limited by the present invention.
To better understand the implementation manner of the control circuit of the dual-color indicator lamp provided in the embodiment of the present invention, the following takes the control circuit of the dual-color indicator lamp as shown in fig. 6 as an example, and exemplarily illustrates a principle that the driving circuit drives the light emitting circuit to emit light when the IO signal output by the IO interface 80 of the processor 8 (i.e., the IO signal input to the IO terminal 53 of the driving circuit 5) is at a high level and the IO signal is at a low level.
(1) IO signal being high level
As shown in fig. 6, when the IO signal is at a high level, the third transistor 56 is turned on because the third transistor 56 is an NPN transistor and the emitter e3 of the third transistor 56 is connected to the second ground interface 92; the bases of the first transistor 54 and the second transistor 55 are at a low level (pulled down by the second ground interface 92), and since the first transistor 54 is an NPN-type transistor and the second transistor 55 is a PNP-type transistor, the first transistor 54 is turned off and the second transistor 55 is turned on; the emitter e2 of the second transistor 55 is at a low level, that is, the cathode of the first indicator light 63 and the anode of the second indicator light 64 are at a low level, and since the anode of the first indicator light 63 is connected to the first power interface 70 through the second resistor 65 and the second indicator light 64 is connected to the first ground interface 72 through the third resistor 66, the first indicator light 63 is turned on and the second indicator light 64 is turned off, that is, the first indicator light 63 emits light.
Fig. 7 is an equivalent circuit diagram of the control circuit of the bi-color indicator lamp shown in fig. 6 when the IO signal is at a high level.
In fig. 7, assuming that the power supply voltage is U1, the current flowing through the first indicator light 63 is I1, the resistance value of the second resistor 65 is R2, the voltage across the first indicator light 63 is V1, the voltage between the emitter e2 and the base b2 of the second transistor 55 is V2, and the voltage between the collector c3 and the emitter e3 of the third transistor 56 is V3, I1R 2+ V1+ V2+ V3= U1. Where V3 is the voltage between the collector c3 and the emitter e3 of the third transistor 56 when the third transistor 56 is in saturation.
For example, assuming that U1=5 volts, I1=1.5 milliamps, V1=2.7 volts, V2=0.7 volts (for example, a silicon-type transistor, the voltage between the emitter and the base of which is 0.7 volts), and V3=0.1 volts, then:
1.5 milliamps R2+2.7 volts +0.7 volts +0.1 volts =5 volts;
r2= (5-0.1-0.7-2.7) volts/1.5 milliamps =1000 ohms.
That is, in the equivalent circuit shown in fig. 7, the resistance value of the second resistor 65 is preferably 1000 ohms.
(2) IO signal is low level
As shown in fig. 6, when the IO signal is at a low level, the third transistor 56 is turned off because the third transistor 56 is an NPN transistor and the emitter e3 of the third transistor 56 is connected to the second ground interface 92; the bases of the first transistor 54 and the second transistor 55 are at a high level (raised by the second power interface 90), and since the first transistor 54 is an NPN-type transistor and the second transistor 55 is a PNP-type transistor, the first transistor 54 is turned on and the second transistor 55 is turned off; the emitter e1 of the first transistor 54 is at a high level, that is, the cathode of the first indicator light 63 and the anode of the second indicator light 64 are at a high level, and since the anode of the first indicator light 63 is connected to the first power interface 70 through the second resistor 65 and the second indicator light 64 is connected to the first ground interface 72 through the third resistor 66, the first indicator light 63 is turned off and the second indicator light 64 is turned on, that is, the second indicator light 64 emits light.
Fig. 8 is an equivalent circuit diagram of the control circuit of the bi-color indicator lamp shown in fig. 6 when the IO signal is low.
In fig. 8, assuming that the current flowing through the second indicator light 64 is I2, the resistance value of the first resistor 57 is R1, the current flowing through the first resistor 57 (i.e., the current flowing through the base b1 of the first transistor 54) is I3, the current flowing through the collector c1 of the first transistor 54 is I4, the amplification factor of the first transistor 54 is hFE, and I2= I3+ I4, and I4= hFE I3, I2= (1 + hFE) = I3, I3= I2/(1 + hFE).
Further, assuming that the power voltage is U1, the resistance value of the third resistor 66 is R3, the voltage across the second indicator light 64 is V4, and the voltage between the emitter e1 and the base b1 of the first transistor 54 is V5, I2 × R3+ V4+ V5+ I3 × R1= U1.
For example, assuming that U1=5 volts, I2=2 milliamps, V4=2 volts, V5=0.7 volts (for example, a silicon-type transistor, the voltage between the emitter and the base of which is 0.7 volts), and hFE =120, then:
2 milliamps R3+2 volts +0.7 volts +2 milliamps/(1 + 120) R1=5 volts;
(R3 + R1/121) 2 ma =5 volts. Wherein the equation is satisfied when R1 takes 10000 ohms and R3 takes 1000 ohms.
That is, in the equivalent circuit shown in fig. 8, the resistance value of the first resistor 57 is preferably 10000 ohms; the third resistor preferably has a resistance of 1000 ohms.
In the embodiment of the present invention, the first indicator light 63 may indicate that the electronic device using the control circuit is in an operating state, and the second indicator light 64 may indicate that the electronic device is in a standby state. Alternatively, the second indicator light 64 may indicate that the electronic device is in the working state, and the first indicator light 63 may indicate that the electronic device is in the standby state, which is not limited in the present invention.
Optionally, the color of the first indicator light 63 and the second indicator light 64 may be selected according to actual use requirements, and the present invention is not limited thereto.
On one hand, the control circuit of the double-color indicator lamp provided by the embodiment of the invention has the advantages that the driving circuit of the double-color indicator lamp is arranged on the main control PCB, and the light-emitting circuit of the double-color indicator lamp is arranged on the indicator lamp PCB, so that the number of components on the indicator lamp PCB can be reduced, and the size of the indicator lamp PCB can be reduced. On the other hand, since the number of the interfaces of the first connector for connecting the driving circuit and the light emitting circuit is still 3 provided on the indicator PCB, the number of the interfaces of the first connector is not increased, and the size of the indicator PCB can be reduced. Compared with the prior art, the control circuit of the double-color indicator lamp provided by the embodiment of the invention can reduce the number of components on the indicator lamp PCB under the condition of not increasing the number of interfaces of the connector, thereby reducing the size of the indicator lamp PCB and further promoting the development of a television towards the direction of narrowing the frame and lightening the thickness.
An embodiment of the present invention provides an electronic device, which may include a main control PCB, an indicator light PCB, and the control circuit described above with reference to any one of fig. 3 to 8. The control circuit comprises a driving circuit 5 of the double-color indicator lamp and a light-emitting circuit 6 of the double-color indicator lamp; the drive circuit 5 is arranged on the main control PCB, and the light-emitting circuit is arranged on the indicator light PCB. The driving circuit 5 and the light emitting circuit 6 are connected by a first connector 7 provided on the indicator lamp PCB. The first connector 7 includes three interfaces, i.e., a first power interface 70, a first indicator driving interface 71, and a first ground interface 72, through which the driving circuit 5 and the light emitting circuit 6 are connected.
Optionally, the main control PCB is further provided with a processor. And the IO end of the driving circuit is connected with the IO interface of the processor.
In the embodiment of the present invention, an IO end of the driving circuit is connected to one IO interface of the processor, and the IO interface may output an IO signal obtained by converting a remote control signal by the processor.
Specifically, for the structure, description and operation principle of the control circuit, reference may be made to any one of the structures, descriptions and related descriptions of the operation principle of the control circuit in the foregoing embodiments as shown in fig. 3 to fig. 8, and details are not repeated here.
Preferably, the electronic device may be a television. This is because the television needs to be made thinner and thinner with a narrower frame.
Of course, the electronic device in the embodiment of the present invention may also be a set top box or other electronic devices that require two-color indicator light control, and the present invention is not limited specifically.
The embodiment of the invention provides electronic equipment which comprises a control circuit of a double-color indicator lamp, wherein the control circuit comprises a driving circuit of the double-color indicator lamp arranged on a main control PCB, a light-emitting circuit of the double-color indicator lamp arranged on the indicator lamp PCB and a first connector, and the first connector comprises a first power interface, a first indicator lamp driving interface and a first grounding interface; the power end of the light-emitting circuit is connected with the power end of the driving circuit through the first power interface, the indicator lamp driving end of the light-emitting circuit is connected with the indicator lamp driving end of the driving circuit through the first indicator lamp driving interface, the grounding end of the light-emitting circuit is connected with the grounding end of the driving circuit through the first grounding interface, and the IO end of the driving circuit is connected with the IO interface of the processor arranged on the main control PCB.
Based on above-mentioned technical scheme, on the one hand, because the drive circuit setting of double-colored pilot lamp is on main control PCB, and the luminescent circuit setting of double-colored pilot lamp is on pilot lamp PCB, consequently the components and parts quantity on the pilot lamp PCB has reduced, can reduce pilot lamp PCB's size. On the other hand, since the number of the interfaces of the first connector for connecting the driving circuit and the light emitting circuit is still 3 provided on the indicator PCB, the number of the interfaces of the first connector is not increased, and the size of the indicator PCB can be reduced. Compared with the prior art, the control circuit of the double-color indicator lamp provided by the embodiment of the invention can reduce the number of components on the indicator lamp PCB under the condition of not increasing the number of interfaces of the connector, thereby reducing the size of the indicator lamp PCB and further promoting the development of a television towards the direction of narrowing the frame and lightening the thickness.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute all or part of the steps of the method according to the embodiments of the present invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A control circuit for a bi-color indicator light, the control circuit comprising:
the double-color indicator lamp comprises a driving circuit of the double-color indicator lamp, a light-emitting circuit of the double-color indicator lamp and a first connector, wherein the driving circuit is arranged on a main control Printed Circuit Board (PCB), and the light-emitting circuit and the first connector of the double-color indicator lamp are arranged on the indicator lamp PCB; wherein,
the power end of the light-emitting circuit is connected with the power end of the driving circuit through the first power interface, the indicator lamp driving end of the light-emitting circuit is connected with the indicator lamp driving end of the driving circuit through the first indicator lamp driving interface, the grounding end of the light-emitting circuit is connected with the grounding end of the driving circuit through the first grounding interface, and the input/output (IO) end of the driving circuit is connected with an IO interface of a processor arranged on the main control PCB;
the control circuit further comprises a second connector arranged on the main control PCB, and the second connector comprises a second power supply interface, a second indicator light driving interface and a second grounding interface;
the power end of the driving circuit is connected with the first power interface through the second power interface, the indicator lamp driving end of the driving circuit is connected with the first indicator lamp driving interface through the second indicator lamp driving interface, and the grounding end of the driving circuit is connected with the first grounding interface through the second grounding interface.
2. The control circuit of claim 1, wherein the drive circuit comprises:
a first transistor, a collector of which is connected to the second power interface, and an emitter of which is connected to the second indicator light driving interface;
a second transistor, an emitter of the second transistor being connected to an emitter of the first transistor, a collector of the second transistor being connected to the second ground interface, a base of the second transistor being connected to the base of the first transistor;
a third transistor, a collector of which is connected to the base of the first transistor, an emitter of which is connected to the second ground interface, and a base of which is connected to an IO interface of the processor;
one end of the first resistor is connected with the second power interface, and the other end of the first resistor is connected with the collector electrode of the third transistor;
the collector of the first transistor and one end of the first resistor are both power supply ends of the driving circuit, the emitter of the first transistor and the emitter of the second transistor are both driving ends of the indicator light of the driving circuit, the collector of the second transistor and the emitter of the third transistor are both grounding ends of the driving circuit, and the base of the third transistor is an IO end of the driving circuit.
3. The control circuit of claim 2,
the first transistor is an NPN transistor, the second transistor is a PNP transistor, and the third transistor is an NPN transistor.
4. The control circuit according to any one of claims 1 to 3, wherein the light emitting circuit comprises:
the negative pole of the first indicator light is connected with the first indicator light driving interface;
the anode of the second indicator light is connected with the cathode of the first indicator light;
the cathode of the first indicator light and the anode of the second indicator light are both indicator light driving ends of the light-emitting circuit.
5. The control circuit of claim 4, further comprising a second resistor, one end of the second resistor being connected to the first power interface, and the other end of the second resistor being connected to the positive electrode of the first indicator light;
one end of the second resistor is a power supply end of the light-emitting circuit.
6. The control circuit of claim 4, further comprising a third resistor, one end of the third resistor being connected to the first ground interface, and the other end of the third resistor being connected to the negative terminal of the second indicator light;
one end of the third resistor is a ground end of the light emitting circuit.
7. The control circuit of claim 6,
the first indicator light is a Light Emitting Diode (LED), and the second indicator light is a light emitting LED.
8. The control circuit of claim 7,
the resistance value of the second resistor is 1000 ohms, and the resistance value of the third resistor is 1000 ohms.
9. An electronic device, characterized in that the electronic device comprises:
a main control printed circuit board PCB, an indicator light PCB, and a control circuit according to any of claims 1-8.
10. The electronic device of claim 9,
the electronic equipment is a television.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015083.6A CN109041384B (en) | 2015-08-13 | 2015-08-13 | Control circuit of double-color indicator lamp and electronic equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015083.6A CN109041384B (en) | 2015-08-13 | 2015-08-13 | Control circuit of double-color indicator lamp and electronic equipment |
| CN201510497981.XA CN105072762B (en) | 2015-08-13 | 2015-08-13 | A kind of control circuit and electronic equipment of bi-colour LED |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510497981.XA Division CN105072762B (en) | 2015-08-13 | 2015-08-13 | A kind of control circuit and electronic equipment of bi-colour LED |
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| CN109041384A true CN109041384A (en) | 2018-12-18 |
| CN109041384B CN109041384B (en) | 2019-12-27 |
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| CN201811015083.6A Active CN109041384B (en) | 2015-08-13 | 2015-08-13 | Control circuit of double-color indicator lamp and electronic equipment |
| CN201510497981.XA Active CN105072762B (en) | 2015-08-13 | 2015-08-13 | A kind of control circuit and electronic equipment of bi-colour LED |
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| CN201510497981.XA Active CN105072762B (en) | 2015-08-13 | 2015-08-13 | A kind of control circuit and electronic equipment of bi-colour LED |
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| CN110740536A (en) * | 2019-11-25 | 2020-01-31 | 四川力士达照明设备股份有限公司 | multifunctional indicator lamp control circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202772864U (en) * | 2012-08-30 | 2013-03-06 | 深圳Tcl新技术有限公司 | Key and indicator light control circuit, and television |
| CN204129731U (en) * | 2014-09-24 | 2015-01-28 | 浪潮电子信息产业股份有限公司 | A kind of Server user interface board |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8251740B2 (en) * | 2010-09-09 | 2012-08-28 | All Systems Broadband, Inc. | HDMI plug and cable assembly |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202772864U (en) * | 2012-08-30 | 2013-03-06 | 深圳Tcl新技术有限公司 | Key and indicator light control circuit, and television |
| CN204129731U (en) * | 2014-09-24 | 2015-01-28 | 浪潮电子信息产业股份有限公司 | A kind of Server user interface board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105072762B (en) | 2018-11-27 |
| CN105072762A (en) | 2015-11-18 |
| CN109041384B (en) | 2019-12-27 |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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