CN115767836B - Lamp circuit - Google Patents
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- CN115767836B CN115767836B CN202310029868.3A CN202310029868A CN115767836B CN 115767836 B CN115767836 B CN 115767836B CN 202310029868 A CN202310029868 A CN 202310029868A CN 115767836 B CN115767836 B CN 115767836B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention provides a lamp circuit which comprises a detection circuit, a first voltage stabilizing circuit, a second voltage stabilizing circuit, a lamp control chip and a lamp, wherein the detection circuit is connected with an external switch module and an external power supply, so that a first signal is generated when a switch is connected in the switch module, a second signal is generated when the switch is separated from the switch module, the first voltage stabilizing circuit is connected with the detection circuit, the first voltage stabilizing circuit is connected with the second voltage stabilizing circuit, the second voltage stabilizing circuit is connected with the lamp control chip, the output end of the lamp control chip and the second output end of the first voltage stabilizing circuit are connected with the lamp, the power supply of the lamp is controlled and cut off based on the first signal, and the power supply of the lamp is controlled and maintained based on the second signal. The lamp circuit provided by the invention can enable a user to turn off the lamp when the lamp is not used, effectively prevent the lamp from being turned on for a long time, ensure the service life of the lamp and avoid part of potential safety hazards existing in the use of the lamp.
Description
Technical Field
The invention belongs to the technical field of lamplight illumination, and particularly relates to a lamp circuit.
Background
Lighting is a measure of illuminating work and living places or individual objects with various light sources, and in many cases, it is necessary to use lighting fixtures to provide various kinds of lights, and in various kinds of vehicles, the lighting fixtures are also an indispensable part thereof.
Taking a vehicle as an example, a car light is a lighting device on the vehicle, and the car light is a tool for lighting a road at night and also a prompting tool for sending various vehicle running signals. The lamps are generally classified into a head lamp, a tail lamp, a turn lamp, etc., wherein the head lamp is generally disposed at the front of the automobile, the tail lamp is generally disposed at the rear of the automobile, the head lamp and the tail lamp mainly play a role of illumination and signaling, and the turn lamp is used for indicating left turn or right turn to other road users. In addition, various decorative lighting fixtures can be arranged inside and outside the vehicle according to the preference of a user.
The lighting fixtures have corresponding service lives, but in the prior art, the circuit voltages of many lighting fixtures are not stable enough, so that the service lives of the lighting fixtures are influenced, and certain potential safety hazards exist. In addition, in a circuit in which a plurality of lighting fixtures are connected in series, an insufficiently stable voltage may cause the light emission intensities of the respective lighting fixtures to be inconsistent, thereby affecting the appearance of the user.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, the present invention proposes a lamp circuit comprising: the device comprises a detection circuit, a first voltage stabilizing circuit, a second voltage stabilizing circuit, a lamp control chip and a lamp; the detection circuit is connected with an external switch module and an external power supply, so as to generate a first signal when a switch is connected in the switch module, and generate a second signal when the switch is separated from the switch module;
the input end of the first voltage stabilizing circuit is connected with the detection circuit;
the output end of the first voltage stabilizing circuit is connected with the input end of the second voltage stabilizing circuit;
the output end of the second voltage stabilizing circuit is connected with the input end of the lamp control chip;
the output end of the lamp control chip and the output end of the first voltage stabilizing circuit are connected with the lamp so as to control and cut off the power supply of the lamp based on the first signal and control and maintain the power supply of the lamp based on the second signal.
Specifically, the detection circuit includes:
the first diode, the second diode, the third diode, the first triode, the first resistor, the second resistor, the third resistor, the fourth resistor and the MOS tube;
the anode of the first diode is grounded, the cathode of the first diode and the anode of the second diode are commonly connected with the voltage input end of the external power supply, the cathode of the second diode and the source of the MOS tube are commonly connected with the first end of the first resistor, the grid of the MOS tube is connected with the first end of the second resistor, and the drain of the MOS tube is connected with the input end of the first voltage stabilizing circuit;
the positive electrode of the third diode is grounded, the negative electrode of the third diode, the first end of the third resistor and the first end of the fourth resistor are commonly connected with a control level for controlling the switch module to generate signals, the second end of the third resistor is connected with the base electrode of the first triode, and the second end of the fourth resistor is grounded;
the collector of the first triode is commonly connected with the second end of the first resistor and the second end of the second resistor, and the emitter of the first triode is grounded.
Specifically, the first voltage stabilizing circuit includes: a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, an inductor, and a switch mode converter;
the first end of the first capacitor, the first end of the second capacitor, the voltage input end of the switch mode converter and the enabling end are commonly connected with the detection circuit, and the second end of the first capacitor and the second end of the second capacitor are respectively grounded;
the switch port of the switch mode converter is connected with the first end of the third capacitor and the first end of the fourth capacitor through the inductor, the first end of the third capacitor and the first end of the fourth capacitor are simultaneously connected with the input end of the second voltage stabilizing circuit, and the second end of the third capacitor and the second end of the fourth capacitor are respectively grounded.
Optionally, the lamp control chip includes a bluetooth control chip, the bluetooth control chip is used for receiving the signal of the switch module, and sends out bluetooth signal control to cut off or maintain the power of the lamp.
Further, the lamp further comprises a control switch, the output end of the lamp control chip is connected with the lamp through the control switch, the lamp control chip controls the control switch to be disconnected based on the first signal, and controls the control switch to be connected based on the second signal.
Preferably, the lamp comprises a plurality of groups of different color channel lamp groups, the control switch comprises a plurality of groups of channel switches, and different color channel lamp groups are controlled by different channel switches;
the lamp control chip is also used for controlling the illumination color of the lamp by cutting off or maintaining the channel switches corresponding to different color channel lamp groups.
Preferably, the lamp further comprises a main lamp group, wherein the main lamp group comprises a voltage stabilizing filter circuit, a temperature control circuit, a power stabilizing circuit and main lamp beads;
the voltage stabilizing filter circuit is used for providing stable voltage for the main lamp bead, the temperature control circuit and the power stabilizing circuit are connected with the voltage stabilizing filter circuit, and the power of the main lamp bead is regulated based on the ambient temperature and the output voltage of the voltage stabilizing filter circuit.
Further, the main lamp group further comprises an anti-reverse connection circuit, wherein the anti-reverse connection circuit is connected with the output end of the lamp control chip and the output end of the first voltage stabilizing circuit and is used for cutting off the power supply of the external power supply to the main lamp beads when the connection mode of the user to the main lamp beads is incorrect;
the anti-reverse connection circuit comprises a fourth diode and a fifth diode, wherein the negative electrode of the fourth diode and the positive electrode of the fifth diode are connected with the output end of the first voltage stabilizing circuit together, the positive electrode of the fourth diode is grounded, and the fifth diode is connected with the main lamp bead.
Specifically, the voltage stabilizing filter circuit comprises a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor and a fuse;
the first ends of the fifth capacitor and the sixth capacitor are connected with the first end of the fuse, and the first ends of the fifth capacitor and the sixth capacitor are simultaneously connected with the input end of the second voltage stabilizing circuit;
the first ends of the seventh capacitor and the eighth capacitor are connected with the second end of the fuse, and the first ends of the seventh capacitor and the eighth capacitor are simultaneously connected with the input end of the power stabilizing circuit;
and the second ends of the fifth capacitor, the sixth capacitor, the seventh capacitor and the eighth capacitor are respectively grounded.
Specifically, the power stabilizing circuit comprises a constant current IC chip, a second triode, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a ninth capacitor and a tenth capacitor;
the voltage input end of the constant current IC chip is connected with the output end of the voltage stabilizing filter circuit, the low-level effective end of the constant current IC chip is commonly connected with the main lamp bead and the first end of the ninth capacitor, the low-level effective end is also commonly connected with the voltage input end of the constant current IC chip and the output end of the second voltage stabilizing circuit through the fifth resistor, the sixth resistor and the seventh resistor which are connected in parallel, and the second end of the ninth capacitor is grounded;
the brightness control end of the constant current IC chip and the temperature control circuit are both connected with the emitter of the second triode through the eighth resistor, the power supply voltage end of the constant current IC chip is commonly connected with the collector of the second triode and the first end of the tenth capacitor, the common end of the constant current IC chip is grounded, and the second end of the tenth capacitor is grounded;
the base of the second triode is respectively connected with the first end of the ninth resistor and the first end of the tenth resistor, the second end of the ninth resistor is connected with the output end of the voltage stabilizing filter circuit, and the second end of the tenth resistor is grounded.
The invention has at least the following beneficial effects:
the lamp circuit provided by the invention utilizes the switch module, can realize the opening and closing of the lamp according to whether a user uses the lamp, prevents the lamp from being opened for a long time when the user does not use the lamp, ensures the service life of the lamp, and can also play a role in ensuring the use safety and service life of the battery when the lamp is powered by the battery;
furthermore, the lamp circuit provided by the invention is also provided with the reverse connection preventing function for ensuring the use safety, and meanwhile, the temperature control circuit and the power stabilizing circuit are arranged in the lamp circuit, so that the lamp can adjust the input power according to the input voltage and the ambient temperature, the power of a plurality of LED lamps in the lamp is ensured to be the same, and the visual experience of a user is effectively improved.
Therefore, the lamp circuit provided by the invention can enable a user to turn off the lamp when the lamp is not used, effectively prevent the lamp from being in a long-term on state, ensure the service life of the lamp, and avoid part of potential safety hazards existing in the use of the lamp.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a lamp circuit according to embodiment 1;
fig. 2 is a schematic circuit diagram of a lamp circuit according to embodiment 1;
FIG. 3 is a schematic circuit diagram of a main light set;
FIG. 4 is a schematic circuit diagram of a multi-group color channel lamp group;
fig. 5 is a schematic diagram of an alternative circuit structure of the fifth diode.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Hereinafter, various embodiments of the present invention will be described more fully. The invention is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the various embodiments of the invention to the specific embodiments disclosed herein, but rather the invention is to be understood to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the invention.
Hereinafter, the terms "comprises" or "comprising" as may be used in various embodiments of the present invention indicate the presence of the disclosed functions, operations or elements, and are not limiting of the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the invention, the terms "comprises," "comprising," and their cognate terms are intended to refer to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be interpreted as first excluding the existence of or increasing likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
In various embodiments of the invention, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B or may include both a and B.
Expressions (such as "first", "second", etc.) used in the various embodiments of the invention may modify various constituent elements in the various embodiments, but the respective constituent elements may not be limited. For example, the above description does not limit the order and/or importance of the elements. The above description is only intended to distinguish one element from another element. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.
It should be noted that: in the present invention, unless explicitly specified and defined otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between the interiors of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, it should be understood by those of ordinary skill in the art that the terms indicating an orientation or a positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of description, not to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.
The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the invention belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments of the invention.
Example 1
Referring to fig. 1 and 2, the present invention provides a lamp circuit, which includes: the device comprises a detection circuit, a first voltage stabilizing circuit, a second voltage stabilizing circuit, a lamp control chip and a lamp;
the detection circuit is connected with the external switch module and the external power supply to generate a first signal when the switch module is connected with the switch, and generate a second signal when the switch is separated from the switch module;
the input end of the first voltage stabilizing circuit is connected with the detection circuit;
the output end of the first voltage stabilizing circuit is connected with the input end of the second voltage stabilizing circuit;
the output end of the second voltage stabilizing circuit is connected with the input end of the lamp control chip;
the output end of the lamp control chip and the output end of the first voltage stabilizing circuit are connected with the lamp so as to control and cut off the power supply of the lamp based on the first signal and control and maintain the power supply of the lamp based on the second signal.
Specifically, the detection circuit includes:
the first diode S1, the second diode D2, the third diode S3, the first triode Q1, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the first MOS tube;
the positive electrode of the first diode S1 is grounded, the negative electrode of the first diode S1 and the positive electrode of the second diode D2 are commonly connected with the voltage input end of an external power supply, the negative electrode of the second diode D2 and the source electrode D of the first MOS tube are commonly connected with the first end of the first resistor R1, the grid electrode G of the first MOS tube is connected with the first end of the second resistor R2, and the drain electrode S of the first MOS tube is connected with the input end of the first voltage stabilizing circuit;
the positive electrode of the third diode S3 is grounded, the negative electrode of the third diode S3, the first end of the third resistor R3 and the first end of the fourth resistor R4 are commonly connected with a control level for controlling the switch module to generate signals, the second end of the third resistor R3 is connected with the base B of the first triode Q1, and the second end of the fourth resistor R4 is grounded;
the collector C of the first triode Q1 is commonly connected with the second end of the first resistor R1 and the second end of the second resistor R2, and the emitter E of the first triode Q1 is grounded.
Specifically, the control level controls the maintenance or cutting off of the lamp through the electric potential, and when the control level is at the first electric potential, the MOS tube is driven to be communicated and the lamp is maintained to be started; when the control level is at the second potential, the MOS tube is driven to cut off the lamp. In this embodiment, the first potential is a high potential and the second potential is a low potential.
Specifically, the first triode Q1 is an NPN triode, and the first MOS transistor is a P-channel MOS transistor; in the lamp circuit disclosed in the embodiment of the invention, the model of the first triode Q1 is SS8050, the model of the first MOS tube is AO4485, and in other embodiments, other types of triodes and PMOS tubes may be used.
Specifically, the first voltage stabilizing circuit includes: a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first inductance L1 and a switch mode converter; the switch mode converter in this embodiment includes a conversion chip U1;
the first end of the first capacitor C1, the first end of the second capacitor C2, the voltage input end VIN of the conversion chip U1 and the enable end EN are commonly connected to the detection circuit, and the second end of the first capacitor C1 and the second end of the second capacitor C2 are respectively grounded;
the switch port SW of the conversion chip U1 is connected with the first end of the third capacitor C3 and the first end of the fourth capacitor C4 through the first inductor L1, the first end of the third capacitor C3 and the first end of the fourth capacitor C4 are simultaneously connected with the input end of the second voltage stabilizing circuit, and the second end of the third capacitor C3 and the second end of the fourth capacitor C4 are respectively grounded.
In the lamp circuit disclosed in the embodiment of the invention, the model of the conversion chip U1 is OC5822, and other types of conversion chips can be used.
Further, the switch port SW of the conversion chip U1 is further connected to the cathode of the sixth diode D6, the FS port of the conversion chip U1 is grounded through the eleventh resistor R11, the feedback port FB of the conversion chip U1 is commonly connected to the first end of the third capacitor C3, the first end of the fourth capacitor C4, the first inductor L1, and the lamp through the twelfth resistor R12, the feedback port FB of the conversion chip U1 is further grounded through the thirteenth resistor R13, the anode of the sixth diode D6 is grounded, and the common connection terminal VSS of the conversion chip U1 is grounded.
Specifically, the second voltage stabilizing circuit includes:
a voltage control chip U2, a fourteenth resistor R14, an eleventh capacitor C11, a twelfth capacitor C12 and a thirteenth capacitor C13;
the voltage input end of the voltage control chip U2 is connected to the switch port of the conversion chip U1 through the first inductor L1, the voltage output end Vout of the voltage control chip U2 is connected to the first end of the eleventh capacitor C11, the first end of the twelfth capacitor C12, the first end of the fourteenth resistor R14, and the voltage input end of the lamp control chip, the second end of the fourteenth resistor R14 is commonly connected to the first end of the thirteenth capacitor C13 and the reset end RST of the lamp control chip, and the second end of the eleventh capacitor C11, the second end of the twelfth capacitor C12, and the second end of the thirteenth capacitor C13 are respectively grounded.
In this embodiment, the second voltage stabilizing circuit is configured to provide a stable 3V voltage to the lamp control chip, and the voltage input end of the lamp control chip is 3V3.
In the lamp circuit disclosed in the embodiment of the invention, the voltage control chip U2 is of the type HT7133, and other types of voltage control chips can be used.
Optionally, the lamp control chip comprises a bluetooth control chip, and the bluetooth control chip is used for receiving signals of the switch module and sending out bluetooth signals to control the power supply of the lamp to be cut off or maintained.
Further, the lamp further comprises a control switch, the output end of the lamp control chip is connected with the lamp through the control switch, the lamp control chip controls the control switch to be disconnected based on the first signal, and controls the control switch to be connected based on the second signal.
Preferably, referring to fig. 3 and 4, the lamp includes a plurality of groups of different color channel lamp groups, the control switch includes a plurality of groups of channel switches, and the different color channel lamp groups are controlled by different channel switches; the lamp in this embodiment includes a red (R) channel lamp set, a green (G) channel lamp set, a blue (B) channel lamp set, and a white (W) channel lamp set;
the lamp control chip is also used for controlling the illumination color of the lamp by cutting off or maintaining the channel switch corresponding to the different color channel lamp groups.
Preferably, referring to fig. 3, the lamp further includes a main lamp set, where the main lamp set includes a voltage stabilizing filter circuit, a temperature control circuit, a power stabilizing circuit and main lamp beads;
the voltage stabilizing filter circuit is used for providing stable voltage for the main lamp bead, the temperature control circuit and the power stabilizing circuit are connected with the voltage stabilizing filter circuit, and the power of the main lamp bead is regulated based on the ambient temperature and the output voltage of the voltage stabilizing filter circuit.
Preferably, the lamp in the lamp circuit provided by the invention can be installed by a user by himself, more installation options are provided for the user, but in practical application, the situation that the connection mode is incorrect often occurs when the user installs the lighting appliance is ensured, and in order to ensure no potential safety hazard, the main lamp group further comprises an anti-reverse circuit, and the anti-reverse circuit is used for cutting off the power supply of the power supply to the lighting lamp group through the control circuit when the connection mode of the user to the lighting lamp group is incorrect, thereby not only ensuring that the user cannot damage the circuit or generate dangerous situations such as electric shock when the user installs the lighting lamp group in error, but also playing a role in prompting the user of installation error.
Specifically, the anti-reverse connection circuit is connected with the output end of the lamp control chip and the output end of the first voltage stabilizing circuit, and is used for cutting off the power supply of the external power supply to the main lamp beads when the connection mode of the main lamp beads by a user is incorrect;
the anti-reverse connection circuit comprises a fourth diode S4 and a fifth diode D5, wherein the negative electrode of the fourth diode S4 and the positive electrode of the fifth diode D5 are commonly connected with the output end of the first voltage stabilizing circuit, the positive electrode of the fourth diode S4 is grounded, and the fifth diode D5 is connected with the main lamp bead.
Referring to fig. 5, in one embodiment, the fifth diode D5 may be integrated by two parallel diodes.
Specifically, the voltage stabilizing filter circuit includes a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, and a fuse F1;
the first ends of the fifth capacitor C5 and the sixth capacitor C6 are connected with the first end of the fuse F1, and the first ends of the fifth capacitor C5 and the sixth capacitor C6 are simultaneously connected with the input end of the second voltage stabilizing circuit;
the first ends of the seventh capacitor C7 and the eighth capacitor C8 are connected with the second end of the fuse F1, and the first ends of the seventh capacitor C7 and the eighth capacitor C8 are simultaneously connected with the input end of the power stabilizing circuit;
the second ends of the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7 and the eighth capacitor C8 are respectively grounded.
Specifically, the power stabilizing circuit includes a constant current IC chip, a second triode Q2, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a ninth capacitor C9, and a tenth capacitor C10;
the voltage input end VIN of the constant current IC chip is connected with the output end of the voltage stabilizing filter circuit, the low-level effective end CSN of the constant current IC chip is commonly connected with the main lamp bead and the first end of the ninth capacitor C9, the low-level effective end CSN is also connected with the voltage input end VIN of the constant current IC chip and the output end of the second voltage stabilizing circuit through a plurality of bottom resistors connected in parallel, and the second end of the ninth capacitor C9 is grounded; the parallel resistors connected to the low-level effective end CSN in this embodiment include three resistors including a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7;
the brightness control end DIM and the temperature control circuit of the constant-current IC chip are connected with the emitter E of the second triode Q2 through an eighth resistor R8, the power supply voltage end VCC of the constant-current IC chip is commonly connected with the collector C of the second triode Q2 and the first end of a tenth capacitor C10, the second end of the tenth capacitor C10 is grounded, and the public end GND of the constant-current IC chip is grounded;
the base B of the second triode Q2 is respectively connected with the first end of a ninth resistor R9 and the first end of a tenth resistor R10, the second end of the ninth resistor R9 is connected with the output end of the voltage stabilizing filter circuit, and the second end of the tenth resistor R10 is grounded.
Specifically, the second transistor Q2 is an NPN transistor, and in the lamp circuit disclosed in the embodiment of the present invention, the model of the second transistor Q2 is SS8050, and in other embodiments, other types of transistors may be used.
In a specific embodiment, the temperature control circuit includes a temperature control resistor NT1, a first end of the temperature control resistor NT1 is commonly connected with a brightness control end DIM of the constant current IC chip and one end of an eighth resistor R8, and a second end of the temperature control resistor NT1 is grounded.
Further, the integrated circuit grounding end DRV of the constant current IC chip is commonly connected with the first end of the fourteenth capacitor C14 and the grid electrode G of the second MOS tube through a fifteenth resistor R15, the drain electrode D of the second MOS tube is connected with the positive electrode of a seventh diode D7, the negative electrode of the seventh diode D7 is commonly connected with the first end of the fifteenth capacitor C15, the first end of the sixteenth capacitor C16 and the voltage input end VIN of the constant current IC chip, the drain electrode D of the second MOS tube is also connected with the main lamp group through a second inductor L2, the source electrode S of the second MOS tube is grounded, and the second end of the fourteenth capacitor C14, the second end of the fifteenth capacitor C15 and the second end of the sixteenth capacitor C16 are respectively grounded;
specifically, the second MOS tube is an N-channel MOS tube; in the lamp circuit disclosed in the embodiment of the invention, the model of the second MOS transistor is NCE6050K, and in other embodiments, other models of NMOS transistors may be used.
In this embodiment, the main light set includes a plurality of parallel LED light beads and a seventeenth capacitor C17, through the power stabilizing circuit described in the foregoing, the LED light beads can obtain the same input power, and in an application scenario where the number of LED light beads included in the main light set is greater, the input power of all the LED light beads can be unified as well, so that all the LED light beads have the same light-emitting brightness.
It should be noted that the lamp circuit provided in the invention can be applied to lamps installed on traffic vehicles such as automobiles and ships or decorative lamps used outdoors and indoors, and the switch module can include devices such as keys, gates and keys.
In summary, the invention provides a lamp circuit, which can enable a user to turn off a lamp when the lamp is not used, effectively prevent the lamp from being in a long-term on state, ensure the service life of the lamp, and avoid part of potential safety hazards existing in the use of the lamp.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (7)
1. A lamp circuit, comprising: the device comprises a detection circuit, a first voltage stabilizing circuit, a second voltage stabilizing circuit, a lamp control chip and a lamp; the detection circuit is connected with an external switch module and an external power supply, so as to generate a first signal when a switch is connected in the switch module, and generate a second signal when the switch is separated from the switch module; the input end of the first voltage stabilizing circuit is connected with the detection circuit; the output end of the first voltage stabilizing circuit is connected with the input end of the second voltage stabilizing circuit; the output end of the second voltage stabilizing circuit is connected with the input end of the lamp control chip; the output end of the lamp control chip and the output end of the first voltage stabilizing circuit are connected with the lamp so as to control and cut off the power supply of the lamp based on the first signal and control and maintain the power supply of the lamp based on the second signal;
the detection circuit includes:
the first diode, the second diode, the third diode, the first triode, the first resistor, the second resistor, the third resistor, the fourth resistor and the MOS tube;
the anode of the first diode is grounded, the cathode of the first diode and the anode of the second diode are commonly connected with the voltage input end of the external power supply, the cathode of the second diode and the source of the MOS tube are commonly connected with the first end of the first resistor, the grid of the MOS tube is connected with the first end of the second resistor, and the drain of the MOS tube is connected with the input end of the first voltage stabilizing circuit;
the positive electrode of the third diode is grounded, the negative electrode of the third diode, the first end of the third resistor and the first end of the fourth resistor are commonly connected with a control level for controlling the switch module to generate signals, the second end of the third resistor is connected with the base electrode of the first triode, and the second end of the fourth resistor is grounded;
the collector electrode of the first triode is commonly connected with the second end of the first resistor and the second end of the second resistor, and the emitter electrode of the first triode is grounded;
the lamp also comprises a main lamp group, wherein the main lamp group comprises a plurality of main lamp beads connected with the same capacitor in parallel, a voltage stabilizing filter circuit, a temperature control circuit, a power stabilizing circuit and an anti-reverse connection circuit;
the temperature control circuit and the power stabilizing circuit are connected with the voltage stabilizing filter circuit, and the power of the main lamp beads is regulated based on the ambient temperature and the output voltage of the voltage stabilizing filter circuit so that the main lamp beads have the same luminous brightness;
the temperature control circuit is connected with the power stabilizing circuit, and the power stabilizing circuit is also respectively connected with the voltage stabilizing filter circuit and the main lamp bead;
the anti-reverse connection circuit is connected with the output end of the lamp control chip and the output end of the first voltage stabilizing circuit and is used for cutting off the power supply of the external power supply to the main lamp beads when the connection mode of the main lamp beads by a user is incorrect;
the anti-reverse connection circuit comprises a fourth diode and a fifth diode, wherein the negative electrode of the fourth diode and the positive electrode of the fifth diode are connected with the output end of the first voltage stabilizing circuit together, the positive electrode of the fourth diode is grounded, the negative electrode of the fifth diode is connected with the main lamp bead through the voltage stabilizing filter circuit, and the fifth diode comprises a single diode or two diodes integrated in parallel.
2. The luminaire circuit of claim 1 wherein the first voltage regulator circuit comprises: a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, an inductor, and a switch mode converter;
the first end of the first capacitor, the first end of the second capacitor, the voltage input end of the switch mode converter and the enabling end are commonly connected with the detection circuit, and the second end of the first capacitor and the second end of the second capacitor are respectively grounded;
the switch port of the switch mode converter is connected with the first end of the third capacitor and the first end of the fourth capacitor through the inductor, the first end of the third capacitor and the first end of the fourth capacitor are simultaneously connected with the input end of the second voltage stabilizing circuit, and the second end of the third capacitor and the second end of the fourth capacitor are respectively grounded.
3. The light fixture circuit of claim 1, wherein the light fixture control chip comprises a bluetooth control chip for receiving signals from the switch module and sending bluetooth signals to control the switching off or maintaining of the light fixture power.
4. A luminaire circuit as claimed in claim 1 or 3, further comprising a control switch, the output of the luminaire control chip being connected to the luminaire via the control switch, the luminaire control chip controlling the control switch to be switched off based on the first signal and the control switch to be switched on based on the second signal.
5. The luminaire circuit of claim 4 wherein said luminaire comprises a plurality of different sets of color channel lamps, said control switch comprising a plurality of sets of channel switches, different ones of said color channel lamps being controlled by different ones of said channel switches;
the lamp control chip is also used for controlling the illumination color of the lamp by cutting off or maintaining the channel switches corresponding to different color channel lamp groups.
6. The lamp circuit of claim 1 wherein the voltage stabilizing filter circuit comprises a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, and a fuse;
the first ends of the fifth capacitor and the sixth capacitor are connected with the first end of the fuse, and the first ends of the fifth capacitor and the sixth capacitor are simultaneously connected with the input end of the second voltage stabilizing circuit;
the first ends of the seventh capacitor and the eighth capacitor are connected with the second end of the fuse, and the first ends of the seventh capacitor and the eighth capacitor are simultaneously connected with the input end of the power stabilizing circuit;
and the second ends of the fifth capacitor, the sixth capacitor, the seventh capacitor and the eighth capacitor are respectively grounded.
7. The luminaire circuit of claim 1 wherein the power stabilizing circuit comprises a constant current IC chip, a second triode, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a ninth capacitor, a tenth capacitor;
the voltage input end of the constant current IC chip is connected with the output end of the voltage stabilizing filter circuit, the low-level effective end of the constant current IC chip is commonly connected with the main lamp bead and the first end of the ninth capacitor, the low-level effective end is also commonly connected with the voltage input end of the constant current IC chip and the output end of the second voltage stabilizing circuit through the fifth resistor, the sixth resistor and the seventh resistor which are connected in parallel, and the second end of the ninth capacitor is grounded;
the brightness control end of the constant current IC chip and the temperature control circuit are both connected with the emitter of the second triode through the eighth resistor, the power supply voltage end of the constant current IC chip is commonly connected with the collector of the second triode and the first end of the tenth capacitor, the common end of the constant current IC chip is grounded, and the second end of the tenth capacitor is grounded;
the base of the second triode is respectively connected with the first end of the ninth resistor and the first end of the tenth resistor, the second end of the ninth resistor is connected with the output end of the voltage stabilizing filter circuit, and the second end of the tenth resistor is grounded.
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| CN202310029868.3A CN115767836B (en) | 2023-01-09 | 2023-01-09 | Lamp circuit |
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| CN202310029868.3A CN115767836B (en) | 2023-01-09 | 2023-01-09 | Lamp circuit |
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| CN101801145A (en) * | 2010-04-23 | 2010-08-11 | 海洋王照明科技股份有限公司 | Led lamp control circuit and led lamp |
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| CN101267100B (en) * | 2008-01-15 | 2012-12-26 | 深圳创维－Rgb电子有限公司 | Exception protection device for negative and positive dual power supply circuit |
| CN101827480B (en) * | 2010-04-30 | 2014-02-12 | 海洋王照明科技股份有限公司 | LED drive control circuit |
| CN203057594U (en) * | 2012-10-31 | 2013-07-10 | 上海小糸车灯有限公司 | Multipath constant current LED drive circuit with protection function and circuit board structure thereof |
| DE202015000817U1 (en) * | 2015-02-02 | 2015-02-25 | Dungguan Wisdom Electronics Co., Ltd. | An interior lighting controllable via a wall switch |
| CN207853467U (en) * | 2018-01-29 | 2018-09-11 | 苏州汇川联合动力系统有限公司 | A kind of automobile-used throw load protection circuit based on reverse-connection preventing circuit |
| CN210579350U (en) * | 2019-05-10 | 2020-05-19 | 中山市祥霖照明科技有限公司 | Bluetooth control exchanges MOS pipe drive module light modulator |
| CN210266844U (en) * | 2019-06-19 | 2020-04-07 | 深圳耀先科技有限公司 | LED spotlight with constant temperature |
| CN214154891U (en) * | 2020-12-01 | 2021-09-07 | 怡迅（珠海）光电科技有限公司 | Lamp control system |
| CN112512159A (en) * | 2020-12-01 | 2021-03-16 | 怡迅（珠海）光电科技有限公司 | Lamp control system and control method thereof |
| CN214046071U (en) * | 2020-12-24 | 2021-08-24 | 深圳市晶庆光电有限公司 | High-power constant current controller |
| CN215871919U (en) * | 2021-08-23 | 2022-02-18 | 南京普杰物联网技术有限公司 | Two-wire system PWM changes constant current module of adjusting luminance |
| CN115103489A (en) * | 2022-07-22 | 2022-09-23 | 广东富兴商超照明有限公司 | Control circuit of automatic energy-saving driving power supply |
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| CN101801145A (en) * | 2010-04-23 | 2010-08-11 | 海洋王照明科技股份有限公司 | Led lamp control circuit and led lamp |
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