CN115767836A - Lamp circuit - Google Patents
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- CN115767836A CN115767836A CN202310029868.3A CN202310029868A CN115767836A CN 115767836 A CN115767836 A CN 115767836A CN 202310029868 A CN202310029868 A CN 202310029868A CN 115767836 A CN115767836 A CN 115767836A
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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, and a second signal is generated when the switch is disconnected 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, so that the power supply of the lamp is controlled to be cut off based on the first signal, and the power supply of the lamp is controlled to be 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 lighting, and particularly relates to a lamp circuit.
Background
Illumination is a measure for illuminating places of work and life or individual objects by using various light sources, and in many occasions, illumination appliances are required to provide various lights, and are also an essential part of the illumination appliances in various vehicles.
Taking a vehicle as an example, a lamp is a lighting device on the vehicle, and the lamp is not only a tool for lighting a road at night, but also a tool for prompting various vehicle driving signals. The vehicle 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 vehicle, the tail lamp is generally disposed at the rear of the vehicle, the head lamp and the tail lamp mainly serve as illumination and signals, and the turn lamp is used to indicate left or right turn to other road users. In addition, various decorative lighting devices can be arranged inside and outside the vehicle according to the preference of users.
However, in the prior art, the circuit voltage of many lighting apparatuses is not stable enough, which affects the service life of the lighting apparatuses, and meanwhile, certain potential safety hazards exist, and especially, the service life of the lighting apparatuses is further reduced under the condition that the lighting apparatuses are in a long-term on state. In addition, in a circuit in which a plurality of lighting apparatuses are connected in series, the light emission intensity of each lighting apparatus is not uniform even if the voltage is not stable enough, and the appearance of the user is impaired.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a lamp circuit, which comprises: 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 first 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 second output end of the first voltage stabilizing circuit are connected with the lamp so as to control the power supply of the lamp to be cut off based on the first signal and control the power supply of the lamp to be maintained based on the second signal.
Specifically, the detection circuit includes:
the circuit comprises a first diode, a second diode, a third diode, a first triode, a first resistor, a second resistor, a third resistor, a fourth resistor and an MOS (metal oxide semiconductor) tube;
the anode of the first diode is grounded, the cathode of the first diode and the anode of the second diode are connected with the voltage input end of the external power supply together, the cathode of the second diode and the source electrode of the MOS tube are connected with the first end of the first resistor together, the grid electrode of the MOS tube is connected with the first end of the second resistor, and the drain electrode of the MOS tube is connected with the input end of the first voltage stabilizing circuit;
the anode of the third diode is grounded, the cathode of the third diode, the first end of the third resistor and the first end of the fourth resistor are connected with a control level for controlling the switch module to generate a signal, the second end of the third resistor is connected with the base of the first triode, and the second end of the fourth resistor is grounded;
and the collector of the first triode is connected with the second end of the first resistor and the second end of the second resistor together, 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 connected with the detection circuit together, and the second end of the first capacitor and the second end of the second capacitor are grounded respectively;
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, and the bluetooth control chip is configured to receive the signal of the switch module, and send a bluetooth signal to control to cut off or maintain the power supply of the lamp.
Furthermore, 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 switched off based on the first signal, and controls the control switch to be switched on based on the second signal.
Preferably, the lamp comprises a plurality of different color channel lamp sets, the control switch comprises a plurality of channel switches, and different color channel lamp sets are controlled by different channel switches;
the lamp control chip is also used for controlling the lighting color of the lamp in a mode of cutting off or maintaining the channel switches corresponding to the different color channel lamp groups.
Preferably, the lamp further comprises a main lamp bank, wherein the main lamp bank comprises a voltage stabilizing filter circuit, a temperature control circuit, a power stabilizing circuit and a 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 adjusted based on the ambient temperature and the output voltage of the voltage stabilizing filter circuit.
The main lamp group further comprises an anti-reverse connection circuit, the anti-reverse connection circuit is connected with the output end of the lamp control chip and the second output end of the first voltage stabilizing circuit and is used for cutting off power supply of the external power supply to the main lamp bead when the connection mode of a user to the main lamp bead is incorrect;
the reverse connection preventing circuit comprises a fourth diode and a fifth diode, the cathode of the fourth diode and the anode of the fifth diode are connected with the second output end of the first voltage stabilizing circuit, the anode 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;
first ends of the fifth capacitor and the sixth capacitor are connected with a first end of the fuse, and the first ends of the fifth capacitor and the sixth capacitor are simultaneously connected with an input end of the second voltage stabilizing circuit;
first ends of the seventh capacitor and the eighth capacitor are connected with a second end of the fuse, and first ends of the seventh capacitor and the eighth capacitor are simultaneously connected with an input end of the power stabilizing circuit;
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 connected with the main lamp bead and the first end of the ninth capacitor together, the low-level effective end is connected with the voltage input end of the constant-current IC chip and the output end of the voltage-stabilizing circuit together 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 connected with the collector of the second triode and the first end of the tenth capacitor together, the common end of the constant current IC chip is grounded, and the second end of the tenth capacitor is grounded;
the base electrode 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 on and off of the lamp according to whether a user uses the lamp, prevents the lamp from being turned on 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 the service life of a battery when the lamp is powered by the battery;
furthermore, the lamp circuit provided by the invention is also provided with an anti-reverse connection function for ensuring the use safety, and meanwhile, the lamp circuit is provided with the temperature control circuit and the power stabilizing 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 impression 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 prevents the lamp from being in a long-term starting state, ensures the service life of the lamp, and avoids partial potential safety hazards existing in the use of the lamp.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic block diagram of a lamp circuit provided in embodiment 1;
fig. 2 is a schematic circuit structure diagram of a lamp circuit provided in embodiment 1;
FIG. 3 is a schematic diagram of a circuit structure of the main lamp set;
FIG. 4 is a schematic circuit diagram of a multi-color-channel lamp set;
fig. 5 is a schematic diagram of an alternative circuit structure of the fifth diode.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Various embodiments of the present invention will be described more fully hereinafter. The invention is capable of various embodiments and of modifications and variations there between. However, it should be understood that: there is no intention to limit various embodiments of the invention to the specific embodiments disclosed herein, but on the contrary, the intention is to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of various embodiments of the invention.
Hereinafter, the terms "includes" or "may include" used in various embodiments of the present invention indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the present invention, the terms "comprises," "comprising," "includes," "including," "has," "having" and their derivatives are intended to mean that the specified features, numbers, steps, operations, elements, components, or combinations of the foregoing, are only meant to indicate that a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as first excluding the existence of, or adding to the possibility 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", and the like) used in various embodiments of the present invention may modify various constituent elements in various embodiments, but may not limit the respective constituent elements. For example, the above description does not limit the order and/or importance of the elements described. The foregoing description is for the purpose of distinguishing one element from another. 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 otherwise explicitly stated or defined, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; there may be communication between the interiors of the two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, it should be understood by those skilled in the art that the terms indicating an orientation or a positional relationship herein are based on the orientations and the positional relationships shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation and operate, and thus, should not be construed as limiting the present 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 forms are intended to include the plural forms 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 present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
Example 1
Referring to fig. 1 and fig. 2, the present invention provides a lamp circuit, including: 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 the 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 first 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 second output end of the first voltage stabilizing circuit are connected with the lamp so as to cut off the power supply of the lamp based on the first signal control and maintain the power supply of the lamp based on the second signal control.
Specifically, the detection circuit includes:
the circuit comprises a first diode S1, a second diode D2, a third diode S3, a first triode Q1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first MOS (metal oxide semiconductor) tube;
the anode of the first diode S1 is grounded, the cathode of the first diode S1 and the anode of the second diode D2 are connected with the voltage input end of an external power supply, the cathode of the second diode D2 and the source D of the first MOS tube are connected with the first end of a first resistor R1, the grid G of the first MOS tube is connected with the first end of the second resistor R2, and the drain S of the first MOS tube is connected with the input end of a first voltage stabilizing circuit;
the anode of the third diode S3 is grounded, the cathode 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 to a control level for controlling the switch module to generate a signal, the second end of the third resistor R3 is connected to 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 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 lamp to be maintained or cut off 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; and when the control level is at the second potential, the MOS tube is driven to cut off the lamp. In this embodiment, of the first potential and the second potential, the first potential is a high potential, and the second potential is a low potential.
Specifically, the first triode Q1 is an NPN-type triode, and the first MOS transistor is a P-channel MOS transistor; in the lamp circuit disclosed in the above embodiment of the present invention, the type of the first transistor Q1 is SS8050, and the type of the first MOS transistor is AO 4485.
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 inductor L1 and a switch mode converter; in the present embodiment, the switch mode converter 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 enabling end EN are connected with the detection circuit together, and the second end of the first capacitor C1 and the second end of the second capacitor C2 are grounded respectively;
the switch port SW of the conversion chip U1 is connected to 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 connected to the input end of the second voltage stabilizing circuit at the same time, and the second end of the third capacitor C3 and the second end of the fourth capacitor C4 are grounded respectively.
In the lamp circuit disclosed in the above embodiment of the present invention, the model of the conversion chip U1 is OC5822, and other types of conversion chips may also be used.
Further, a switch port SW of the conversion chip U1 is further connected to a cathode of a sixth diode D6, an FS port of the conversion chip U1 is grounded through an eleventh resistor R11, a feedback port FB of the conversion chip U1 is connected to a first end of a third capacitor C3, a first end of a fourth capacitor C4, a first end of the third capacitor C3, a first end of the fourth capacitor C4, a first inductor L1, and a lamp through a twelfth resistor R12, a feedback port FB of the conversion chip U1 is further grounded through a thirteenth resistor R13, an anode of the sixth diode D6 is grounded, and a common connection terminal VSS of the conversion chip U1 is grounded.
Specifically, the second voltage stabilizing circuit includes:
the voltage control chip U2, a fourteenth resistor R14, an eleventh capacitor C11, a twelfth capacitor C12 and a thirteenth capacitor C13;
a voltage input end of the voltage control chip U2 is connected to a switch port of the conversion chip U1 through the first inductor L1, a voltage output end Vout of the voltage control chip U2 is connected to a first end of the eleventh capacitor C11, a first end of the twelfth capacitor C12, a first end of the fourteenth resistor R14 and a voltage input end of the lamp control chip, a second end of the fourteenth resistor R14 is connected to a first end of the thirteenth capacitor C13 and a reset end RST of the lamp control chip, and a second end of the eleventh capacitor C11, a second end of the twelfth capacitor C12 and a 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 for the lamp control chip, and a voltage input end of the lamp control chip is 3V3.
In the lamp circuit disclosed in the above embodiment of the present invention, the model of the voltage control chip U2 is HT7133, and other models of voltage control chips may also be used.
Optionally, the lamp control chip includes a bluetooth control chip, and the bluetooth control chip is used for receiving the signal of the switch module and sending a bluetooth signal to control to cut off or maintain the power supply 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, referring to fig. 3 and 4, the lamp includes a plurality of different color channel lamp sets, the control switch includes a plurality of channel switches, and the different color channel lamp sets are controlled by the different channel switches; in the present embodiment, the lamp 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 lighting color of the lamp by cutting off or maintaining the channel switches corresponding to the channel lamp groups with different colors.
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 a main lamp bead;
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 adjusted 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, so that more installation options are provided for the user, but in practical application, the user often has an incorrect connection mode when installing the lighting appliance, and in order to ensure that no potential safety hazard occurs, the main lamp group further comprises an anti-reverse connection circuit, and the anti-reverse connection circuit is used for cutting off the power supply of the power supply source to the lighting lamp group through the control circuit when the user has an incorrect connection mode to the lighting lamp group, so that the situation that the circuit is not damaged or electric shock and other dangerous situations occur when the user has an installation error is ensured, and the function of prompting the user of an installation error is also achieved.
Specifically, the reverse connection preventing circuit is connected with the output end of the lamp control chip and the second 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 bead when the connection mode of the user to the main lamp bead is incorrect;
the reverse connection preventing circuit comprises a fourth diode S4 and a fifth diode D5, the cathode of the fourth diode S4 and the anode of the fifth diode D5 are connected with the second output end of the first voltage stabilizing circuit, the anode of the fourth diode S4 is grounded, and the fifth diode D5 is connected with the main lamp bead.
Referring to fig. 5, in an embodiment, the fifth diode D5 may be integrated by two parallel diodes.
Specifically, the voltage stabilizing filter circuit comprises a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8 and a fuse F1;
first ends of the fifth capacitor C5 and the sixth capacitor C6 are connected with a first end of the fuse F1, and first ends of the fifth capacitor C5 and the sixth capacitor C6 are simultaneously connected with an input end of the second voltage stabilizing circuit;
first ends of a seventh capacitor C7 and an eighth capacitor C8 are connected with a second end of the fuse F1, and first ends of the seventh capacitor C7 and the eighth capacitor C8 are simultaneously connected with an input end of the power stabilizing circuit;
second ends of the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7 and the eighth capacitor C8 are grounded respectively.
Specifically, the power stabilizing circuit comprises 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 connected with the main lamp bead and the first end of the ninth capacitor C9 together, 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 voltage-stabilizing circuit through a plurality of bottom resistors connected in parallel, and the second end of the ninth capacitor C9 is grounded; in this embodiment, the parallel resistors connected to the low-level active terminal CSN include three resistors, namely a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7;
a brightness control end DIM and a temperature control circuit of the constant current IC chip are both connected with an emitter E of a second triode Q2 through an eighth resistor R8, a power supply voltage end VCC of the constant current IC chip is connected with a collector C of the second triode Q2 and a first end of a tenth capacitor C10 together, a second end of the tenth capacitor C10 is grounded, and a common end GND of the constant current IC chip is grounded;
the base electrode 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 triode Q2 is an NPN type triode, and in the lamp circuit disclosed in the above embodiment of the present invention, the model of the second triode Q2 is SS8050, and in other embodiments, other models of triodes may be used.
In an embodiment, the temperature control circuit includes a temperature control resistor NT1, a first end of the temperature control resistor NT1 is commonly connected to the luminance control end DIM of the constant current IC chip and one end of the eighth resistor R8, and a second end of the temperature control resistor NT1 is grounded.
Furthermore, an integrated circuit ground terminal DRV of the constant current IC chip is commonly connected to the first end of the fourteenth capacitor C14 and the gate G of the second MOS transistor through a fifteenth resistor R15, a drain D of the second MOS transistor is connected to the anode of a seventh diode D7, a cathode of the seventh diode D7 is commonly connected to the first end of the fifteenth capacitor C15, the first end of the sixteenth capacitor C16 and the voltage input terminal VIN of the constant current IC chip, the drain D of the second MOS transistor is further connected to the main lamp set through a second inductor L2, a source S of the second MOS transistor 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 grounded, respectively;
specifically, the second MOS transistor is an N-channel MOS transistor; in the lamp circuit disclosed in the above embodiment of the present invention, the model of the second MOS transistor is NCE6050K, and in other embodiments, NMOS transistors of other models may also be used.
In this embodiment, the main lamp bank includes a plurality of parallelly connected LED lamp beads and seventeenth electric capacity C17, through the power stabilizing circuit in the foregoing, can make LED lamp bead obtain the same input power, in the application scene that LED lamp bead quantity that main lamp bank contains is more, can unify the input power of all LED lamp beads equally to make all LED lamp beads have the same luminance.
It should be noted that the lamp circuit provided in the present invention can be applied to lamps installed on transportation vehicles such as automobiles and ships, or decorative lamps used outdoors and indoors, and the switch module can include, but is not limited to, keys, gates, and buttons.
In summary, the lamp circuit provided by the invention can enable a user to turn off a lamp when the lamp is not used, effectively prevents the lamp from being in a long-term on state, ensures the service life of the lamp, and avoids part of potential safety hazards existing in the use of the lamp.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
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 first 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 second output end of the first voltage stabilizing circuit are connected with the lamp so as to control the power supply of the lamp to be cut off based on the first signal and control the power supply of the lamp to be maintained based on the second signal.
2. The luminaire circuit of claim 1, wherein the detection circuit comprises:
the circuit comprises a first diode, a second diode, a third diode, a first triode, a first resistor, a second resistor, a third resistor, a fourth resistor and an MOS (metal oxide semiconductor) tube;
the anode of the first diode is grounded, the cathode of the first diode and the anode of the second diode are connected with the voltage input end of the external power supply, the cathode of the second diode and the source electrode of the MOS tube are connected with the first end of the first resistor, the grid electrode of the MOS tube is connected with the first end of the second resistor, and the drain electrode of the MOS tube is connected with the input end of the first voltage stabilizing circuit;
the anode of the third diode is grounded, the cathode of the third diode, the first end of the third resistor and the first end of the fourth resistor are 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 of the first triode, and the second end of the fourth resistor is grounded;
and the collector of the first triode is connected with the second end of the first resistor and the second end of the second resistor together, and the emitter of the first triode is grounded.
3. The lamp circuit of claim 1, wherein the first regulation circuit comprises: the 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 connected with the detection circuit together, and the second end of the first capacitor and the second end of the second capacitor are grounded respectively;
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.
4. The lamp circuit of claim 1, wherein the lamp control chip comprises a bluetooth control chip, and the bluetooth control chip is configured to receive the signal from the switch module and send a bluetooth signal to control the power supply of the lamp to be turned off or maintained.
5. The lamp circuit of claim 1 or 4, further comprising a control switch, wherein the output terminal of the lamp control chip is connected to the lamp through the control switch, and the lamp control chip controls the control switch to be turned off based on the first signal and controls the control switch to be turned on based on the second signal.
6. The lamp circuit of claim 5 wherein said lamp includes a plurality of different sets of color channel lamps, said control switch includes a plurality of sets of channel switches, different said sets of color channel lamps being controlled by different said channel switches;
the lamp control chip is also used for controlling the lighting color of the lamp in a mode of cutting off or maintaining the channel switches corresponding to the different color channel lamp groups.
7. The lamp circuit of claim 1, wherein the lamp further comprises a main lamp bank, the main lamp bank comprising a voltage stabilizing filter circuit, a temperature control circuit, a power stabilizing circuit, and a 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 adjusted based on the ambient temperature and the output voltage of the voltage stabilizing filter circuit.
8. The lamp circuit of claim 7, wherein the main lamp set further comprises an anti-reverse connection circuit, the anti-reverse connection circuit is connected to the output terminal of the lamp control chip and the second output terminal of the first voltage stabilizing circuit, and is configured to cut off power supply from the external power supply to the main lamp bead when the connection mode of the user to the main lamp bead is incorrect;
the reverse connection preventing circuit comprises a fourth diode and a fifth diode, the cathode of the fourth diode and the anode of the fifth diode are connected with the second output end of the first voltage stabilizing circuit, the anode of the fourth diode is grounded, and the fifth diode is connected with the main lamp bead.
9. The lamp circuit of claim 7 wherein the voltage regulation filter circuit comprises a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, and a fuse;
first ends of the fifth capacitor and the sixth capacitor are connected with a first end of the fuse, and the first ends of the fifth capacitor and the sixth capacitor are simultaneously connected with an input end of the second voltage stabilizing circuit;
first ends of the seventh capacitor and the eighth capacitor are connected with a second end of the fuse, and first ends of the seventh capacitor and the eighth capacitor are simultaneously connected with an input end of the power stabilizing circuit;
second ends of the fifth capacitor, the sixth capacitor, the seventh capacitor and the eighth capacitor are respectively grounded.
10. The lamp circuit of claim 7, wherein the power stabilization 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 connected with the main lamp bead and the first end of the ninth capacitor together, the low-level effective end is connected with the voltage input end of the constant-current IC chip and the output end of the voltage-stabilizing circuit together 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 connected with the collector of the second triode and the first end of the tenth capacitor together, the common end of the constant current IC chip is grounded, and the second end of the tenth capacitor is grounded;
the base electrode 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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| CN115767836B (en) | 2023-06-27 |
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