CN215300974U - Combined lamp circuit structure - Google Patents
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- CN215300974U CN215300974U CN202022675991.7U CN202022675991U CN215300974U CN 215300974 U CN215300974 U CN 215300974U CN 202022675991 U CN202022675991 U CN 202022675991U CN 215300974 U CN215300974 U CN 215300974U
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Abstract
The utility model provides a modular lamps and lanterns circuit structure, include: at least two lamp units 10, wherein adjacent lamp units 10 are electrically connected, each lamp unit 10 includes a power module 12, a voltage detection module 14 and an MCU16, the MCU16 is connected to the power module 12 and the voltage detection module 14, respectively, the voltage detection module 14 is configured to detect a first voltage of the power module 12 of the adjacent lamp unit 10, and send an abnormal signal to the MCU16 when the first voltage is smaller than a preset voltage; the MCU16 is configured to control the power module 12 to supply power to the adjacent lighting units 10 according to the abnormal signal when the power module 12 is in a normal state, so as to solve the problem in the related art that when one or more lamps in the combined lighting fixture have low battery capacity or the commercial power supply is abnormal, the battery with low voltage needs to be charged separately or the abnormal power supply can be normally supplied after the abnormal power supply is recovered.
Description
Technical Field
The utility model relates to an equipment control field particularly, relates to a modular lamps and lanterns circuit structure.
Background
The length of the long lamp is assembled in a cupboard or a wardrobe, and one lamp cannot meet the requirements of the cupboards or the wardrobes with different lengths due to the different lengths of the cupboards or the wardrobes. The length of the lamp is properly shortened, and when the lamp is used in a short cupboard or a wardrobe, one lamp is used; two or more lamps can be connected together in a longer cupboard or wardrobe, so that a better lighting effect is realized.
Because the length of the cabinet or the wardrobe is different, one lamp cannot meet the requirements of the cabinets or the wardrobes with different lengths. In order to meet the requirements of different lengths of cabinets or wardrobes, a user selects to install one, two or more lamps according to the length. When one or more lamp batteries in the combined lamp are low in electric quantity or a commercial power supply is abnormal, the low-voltage batteries need to be charged independently or the abnormal power supply can be normally supplied.
Aiming at the problem that in the prior art, when one or more lamp batteries in the combined lamp are low in electric quantity or a mains supply power supply is abnormal, the low-voltage batteries need to be charged independently or the abnormal power supply can be normally supplied with power after being recovered, no solution is provided.
Disclosure of Invention
The embodiment of the utility model provides a modular lamps and lanterns circuit structure to at least, solve in the correlation technique when one or more lamp battery electric quantity is low or mains supply power takes place unusually in the modular lamps and lanterns, need charge or the problem that just can normally supply power after the abnormal power source resumes to the battery of low current alone.
According to the utility model discloses an embodiment provides a modular lamps and lanterns circuit structure, include: at least two lamp units 10, wherein adjacent lamp units 10 are electrically connected, each lamp Unit 10 includes a power module 12, a voltage detection module 14, and an MCU16(Microcontroller Unit), the MCU16 is connected to the power module 12 and the voltage detection module 14, respectively, the voltage detection module 14 is configured to detect a first voltage of the power module 12 of the adjacent lamp Unit 10, and send an abnormal signal to the MCU16 when the first voltage is less than a preset voltage; the MCU16 is configured to control the power module 12 to supply power to the adjacent light fixture unit 10 according to the abnormal signal when the power module 12 is in a normal state.
In an exemplary embodiment, the light fixture unit 10 further includes: the LED driver and the LED (Light Emitting Diode) lamp beads, wherein the MCU16 is further configured to receive a Light-on signal or a Light-off signal through the LED driver, and control to turn on the LED lamp beads of the at least two lamp units 10 according to the Light-on signal, or control to turn off the LED lamp beads of the at least two lamp units 10 according to the Light-off signal.
In an exemplary embodiment, the MCU16 is further configured to send the light-on signal or the light-off signal to the MCU16 of the adjacent light fixture unit 10, where the light-on signal is used to instruct the MCU of the adjacent light fixture unit 10 to control to turn on the LED lamp beads of the adjacent light fixture unit 10, and the light-off signal is used to instruct the MCU of the adjacent light fixture unit 10 to control to turn off the LED lamp beads of the adjacent light fixture unit 10.
In an exemplary embodiment, the MCU16 is further configured to receive a dimming signal or a brightness-adjusting signal via the LED driver, and to adjust the brightness of the LED lamp beads of the at least two lamp units 10 according to the dimming signal or the brightness-adjusting signal.
In an exemplary embodiment, the MCU16 is further configured to send the dimming signal or dimming signal to the MCU16 of the adjacent light fixture unit 10, wherein the dimming signal is used to instruct the MCU of the adjacent light fixture unit 10 to control the brightness of the LED lamp bead of the adjacent light fixture unit 10 to be dimmed, and the dimming signal is used to instruct the MCU of the adjacent light fixture unit 10 to control the brightness of the LED lamp bead of the adjacent light fixture unit 10 to be dimmed.
In an exemplary embodiment, the adjacent lamp units 10 are electrically connected by elastic connection pins.
In an exemplary embodiment, the adjacent lamp units 10 are electrically connected by the elastic connection pins of 4 pins or 6 pins.
In an exemplary embodiment, the voltage detection module 14 includes at least: the lighting device comprises a first comparator, a first resistor R20, a second resistor R9, a second comparator, a third resistor R21 and a fourth resistor R10, wherein the forward input of the first comparator is the voltage of the lighting unit 10 adjacent to the first side, and the reverse input of the first comparator is the voltage set by the first resistor R20 and the second resistor R9; the positive input of the second comparator is the voltage of the lamp unit 10 adjacent to the second side; the voltage detection module 14 is further configured to send the abnormal signal of the power module 12 of the lamp unit 10 adjacent to the first side to the MCU16 when detecting that the output of the first comparator is at a low level; sending the abnormal signal of the power module 12 of the second side-adjacent luminaire unit 10 to the MCU16 when the output of the second comparator is detected to be low.
In an exemplary embodiment, the light fixture unit 10 further includes: the second voltage detection module 14, where the second voltage detection module 14 is connected to the MCU16, and the voltage detection module 14 is configured to detect a second voltage of the power module 12 of the voltage detection module 14 and send an alarm signal to the MCU16 when the second voltage is less than the preset voltage; the MCU16 is used for alarming according to the alarm signal.
In an exemplary embodiment, the voltage detection module 14 further includes: a third comparator, wherein the forward input of the third comparator is the voltage of the power module 12 of the third comparator, and the reverse input of the third comparator is the voltage set by the first resistor R20 and the second resistor R9; the voltage detection module 14 is further configured to send the warning signal to the MCU16 when detecting that the output of the second comparator is at a low level.
In an exemplary embodiment, the voltage detection module 14 further includes: a diode D6 and a diode D8, wherein the positive pole of the diode D6 is connected to the power module 12, the negative pole of the diode D6 is connected to the reverse input terminal of the second comparator through the second resistor R9, the positive pole of the diode D8 is connected to the adjacent power module 12 of the lamp unit 10, and the negative pole of the diode D8 is connected to the reverse input terminal of the first comparator through the second resistor R9.
In an exemplary embodiment, the MCU16 is also configured to supply power to adjacent light units 10 by controlling a relay or an analog switch when receiving the abnormal signal.
Through the utility model discloses, can solve in the correlation technique when one or more lamp battery electric quantity is low or mains supply power takes place unusually in the combination formula lamps and lanterns, need charge alone the battery of low voltage or unusual power supply resume just can normally the problem of power supply after normal, when one or more of them lamp battery electric quantity is low, or when mains supply power takes place unusually, lamp that all the other electric quantities are sufficient or the normal lamp of mains supply power can supply power for other electric quantities not enough or unusual lamps.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a structural diagram of a circuit structure of a combined lamp according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a voltage detection module according to an alternative embodiment of the present invention;
fig. 3 is a schematic diagram of a comparator according to an alternative embodiment of the present invention;
fig. 4 is a schematic view of a symmetrical connection according to an alternative embodiment of the present invention;
fig. 5 is a functional block diagram of a lamp according to an alternative embodiment of the present invention;
fig. 6 is a schematic diagram of a power supply selection module according to an alternative embodiment of the present invention;
fig. 7 is a schematic control diagram (one) of a combination lamp according to an alternative embodiment of the present invention;
fig. 8 is a schematic control diagram of a combination lamp according to an alternative embodiment of the present invention;
fig. 9 is a functional summary of the power supply of three connected lamps.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In this embodiment, a combined lamp circuit structure is provided, fig. 1 is a structural diagram of a combined lamp circuit structure according to the embodiment of the present invention, as shown in fig. 1, including:
at least two lamp units 10, wherein adjacent lamp units 10 are electrically connected, each lamp unit 10 includes a power supply module 12, a voltage detection module 14 and an MCU16, the MCU16 is connected to the power supply module 12 and the voltage detection module 14, respectively, wherein the voltage detection module 14 is configured to detect a first voltage of the power supply module 12 of the adjacent lamp unit 10, and send an abnormal signal to the MCU16 when the first voltage is less than a preset voltage; the MCU16 is configured to control the power module 12 to supply power to the adjacent light fixture unit 10 according to the abnormal signal when the power module 12 is in a normal state.
Through above-mentioned circuit structure, can solve among the correlation technique when one or more lamp battery electric quantity is low or mains supply power takes place unusually in the combination formula lamps and lanterns, need charge or the problem that just can normally supply power after the unusual power resumes to the battery of low current alone, when one or more of them lamp battery electric quantity is low, or mains supply power takes place unusually, lamps that other abundant electric quantities of remaining electric quantity or the normal lamp of mains supply power can supply power for other lamp that the electric quantity is not enough or unusual.
In an optional embodiment, the light fixture unit 10 further comprises: the LED driver and the LED lamp beads, wherein the MCU16 is further configured to receive a light-on signal or a light-off signal through the LED driver, and control to turn on the LED lamp beads of the at least two lamp units 10 according to the light-on signal, or control to turn off the LED lamp beads of the at least two lamp units 10 according to the light-off signal.
In an optional embodiment, the MCU16 is further configured to send the light-on signal or the light-off signal to the MCU16 of the adjacent light fixture unit 10, where the light-on signal is used to instruct the MCU of the adjacent light fixture unit 10 to control to turn on the LED lamp beads of the adjacent light fixture unit 10, and the light-off signal is used to instruct the MCU of the adjacent light fixture unit 10 to control to turn off the LED lamp beads of the adjacent light fixture unit 10.
In an optional embodiment, the MCU16 is further configured to receive a dimming signal or a brightness-adjusting signal via the LED driver, and to adjust the brightness of the LED lamp beads of the at least two lamp units 10 according to the dimming signal or the brightness-adjusting signal.
In an optional embodiment, the MCU16 is further configured to send the dimming signal or the dimming signal to the MCU16 of the adjacent light fixture unit 10, where the dimming signal is used to instruct the MCU of the adjacent light fixture unit 10 to control to dim the brightness of the LED lamp bead of the adjacent light fixture unit 10, and the dimming signal is used to instruct the MCU of the adjacent light fixture unit 10 to control to dim the brightness of the LED lamp bead of the adjacent light fixture unit 10.
In an alternative embodiment, the adjacent lamp units 10 are electrically connected by elastic connection pins.
In an alternative embodiment, the adjacent lamp units 10 are electrically connected by the elastic connection pins of 4 pins or 6 pins.
Fig. 2 is a schematic diagram of a voltage detection module according to an alternative embodiment of the present invention, and as shown in fig. 2, the voltage detection module 14 at least includes: the lighting device comprises a first comparator, a first resistor R20, a second resistor R9, a second comparator, a third resistor R21 and a fourth resistor R10, wherein the forward input of the first comparator is the voltage of the lighting unit 10 adjacent to the first side, and the reverse input of the first comparator is the voltage set by the first resistor R20 and the second resistor R9; the positive input of the second comparator is the voltage of the lamp unit 10 adjacent to the second side; the voltage detection module 14 is further configured to send the abnormal signal of the power module 12 of the lamp unit 10 adjacent to the first side to the MCU16 when detecting that the output of the first comparator is at a low level; sending the abnormal signal of the power module 12 of the second side-adjacent luminaire unit 10 to the MCU16 when the output of the second comparator is detected to be low.
For example, the voltage detection module 14 includes a self voltage detection module 14 and an adjacent lamp voltage detection module 14.
Wherein the comparator threshold can be set by R9 and R20: the VCC voltage is the voltage of the lamp, when the VCC voltage is normal, the output is high level, namely Self _ Bat is high level; when the VCC output voltage is lower than the comparator threshold, the output is low, i.e., Self _ Bat is low. And when the Self _ Bat is at a low level, the alarm module gives an alarm. The VLED _ Other1 voltage is the voltage of a side lamp, and when the VLED _ Other1 voltage is normal, the output is high level, i.e. Other1_ Bat is high level; when the VLED _ Other1 output voltage is lower than the comparator threshold, the output is low, i.e., Other1_ Bat is low. When Other1_ Bat is low, the MCU16 controls the relay RLY1 to switch from the detection terminal to the power supply terminal, and the lamp supplies power to the lamp on the Other1 side.
Fig. 3 is a schematic diagram of a comparator according to an alternative embodiment of the present invention, and as shown in fig. 3, the comparator threshold may also be set by R10 and R17: the VLED _ Other2 voltage is the voltage of the Other side lamp, when the VLED _ Other2 voltage is normal, the output is high level, i.e. Other2_ Bat is high level; when the VLED _ Other2 output voltage is lower than the comparator threshold, the output is low, i.e., Other2_ Bat is low. When Other2_ Bat is low, the MCU16 controls the relay RLY2 to switch from the detection terminal to the power supply terminal, and the lamp supplies power to the lamp on the Other2 side. The relay is one type, and can also be realized by using a semiconductor device such as an analog switch.
In an optional embodiment, the light fixture unit 10 further comprises: the second voltage detection module 14, where the second voltage detection module 14 is connected to the MCU16, and the voltage detection module 14 is configured to detect a second voltage of the power module 12 of the voltage detection module 14 and send an alarm signal to the MCU16 when the second voltage is less than the preset voltage; the MCU16 is used for alarming according to the alarm signal.
In an optional embodiment, the voltage detection module 14 further includes: a third comparator, wherein the forward input of the third comparator is the voltage of the power module 12 of the third comparator, and the reverse input of the third comparator is the voltage set by the first resistor R20 and the second resistor R9; the voltage detection module 14 is further configured to send the warning signal to the MCU16 when detecting that the output of the second comparator is at a low level.
In an optional embodiment, the voltage detection module 14 further includes: a diode D6 and a diode D8, wherein the positive pole of the diode D6 is connected to the power module 12, the negative pole of the diode D6 is connected to the reverse input terminal of the second comparator through the second resistor R9, the positive pole of the diode D8 is connected to the adjacent power module 12 of the lamp unit 10, and the negative pole of the diode D8 is connected to the reverse input terminal of the first comparator through the second resistor R9.
In an alternative embodiment, the MCU16 is also used to supply power to adjacent light units 10 by controlling a relay or an analog switch when receiving the abnormal signal.
Fig. 4 is a schematic diagram of a symmetrical connection according to an alternative embodiment of the present invention, as shown in fig. 4, the lamp is connected into a plurality of lamps through pogo pins or connectors (symmetrical structure, without distinguishing male and female heads), the connection method does not need to distinguish the left end or the right end, and the lamps can be freely connected as long as the light emitting surface of the lamps faces one method. One or more keys are arranged on the lamp, and the keys of one lamp can be pressed to control the on-off and brightness adjustment of a plurality of lamps in a connected mode.
Fig. 5 is a functional block diagram of a lamp according to an alternative embodiment of the present invention, as shown in fig. 5, including: the device comprises a battery or a power supply, a driver, an LED driver, a self voltage detection module 14, a key, an MCU16, a left and right adjacent voltage detection module 14, a power supply selection module and an electric energy abnormity alarm module.
Fig. 6 is a schematic diagram of a power supply selection module according to an alternative embodiment of the present invention, and as shown in fig. 6, the power supply selection module is configured to select a power module 12 of its own or a power module 12 of an adjacent luminaire as a power source according to a processing result of the MCU 16.
Fig. 7 is the control principle schematic diagram (one) of the combined lamp of the optional embodiment of the present invention, as shown in fig. 7, the MCU16 connects the comparator set by three thresholds, the three comparator inputs self voltage and both sides adjacent equal voltage respectively, the MCU16 performs state control, the voltage is lower than the threshold to make the relay 1 or relay 2 power supply end work, the voltage is not lower than the threshold to make the relay 1 or relay 2 detection end work.
Fig. 8 is a schematic diagram (ii) of the control principle of the combined lamp according to the optional embodiment of the present invention, as shown in fig. 8, 8 working conditions are total for 3 connected lamps, and as long as there is one lamp powered normally or the battery power is sufficient, all the other lamps can be lighted by the normal lamp. And the lamp with abnormal power supply or low electric quantity outputs an alarm signal. The function summary is shown in fig. 9, and fig. 9 is a function summary diagram of the power supply condition of three connected lamps.
Optionally, when the lamps are in the off state, the switch button of one of the lamps is pressed, the lamp generates a lamp-on signal and sends a lamp-on instruction to the left and right connected lamps, and after the left and right lamps receive the lamp-on instruction, the lamp-on action is realized. When the lamps are in an on state, a switch key of one lamp is pressed, the lamp generates a lamp turning-off signal and sends a lamp turning-off instruction to the lamps connected to the left and the right, and after the left and the right lamps receive the lamp turning-off instruction, the lamp turning-on action is realized. When the lamps are in a certain brightness state, the brightness adjusting button of one of the lamps is pressed, the lamp generates a brightness adjusting signal and sends a brightening or dimming instruction to the left and right connected lamps, and when the left and right lamps receive the brightening or dimming instruction, the brightness adjustment of the lamps is realized. When the battery power of a certain leftmost or rightmost lamp is low or the power supply is abnormal, the adjacent lamps which normally work detect the abnormality of the lamp voltage through the comparator, the relay acts, and the detection end (test end) is switched to the power supply end (power end) to supply power to the lamps. When the battery power of a certain middle lamp is low or the power supply is abnormal, the lamps which work normally and adjacently at the left side and the right side can detect the abnormality of the lamp voltage through the comparator, the relay acts, and the detection end (test end) is switched to the power supply end (power end) to supply power for the lamps. When a lamp is abnormal, the voltage comparator can detect the abnormality of the lamp voltage and send out an alarm signal, and the red LED indicator lamp flickers. And prompting a user to charge or repair the fault.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solution of the present invention essentially or the portions contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), and includes a plurality of instructions for enabling a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A modular lamp circuit structure, comprising: at least two lamp units (10), adjacent lamp units (10) being electrically connected, each lamp unit (10) comprising a power module (12), a voltage detection module (14) and an MCU (16), the MCU (16) being connected to the power module (12) and the voltage detection module (14) respectively, wherein,
the voltage detection module (14) is used for detecting a first voltage of the power supply module (12) of the adjacent lamp unit (10), and sending an abnormal signal to the MCU (16) under the condition that the first voltage is less than a preset voltage;
the MCU (16) is used for controlling the power supply module (12) to supply power to the adjacent lamp unit (10) according to the abnormal signal under the condition that the power supply module (12) is in a normal state.
2. A combined lamp circuit arrangement according to claim 1, wherein the lamp unit (10) further comprises: an LED driver and an LED lamp bead, wherein,
the MCU (16) is also used for receiving a light-on signal or a light-off signal through the LED drive, and controlling to turn on the LED lamp beads of the at least two lamp units (10) according to the light-on signal or controlling to turn off the LED lamp beads of the at least two lamp units (10) according to the light-off signal.
3. The modular lamp circuit configuration of claim 2,
the MCU (16) is also used for sending the light-on signal or the light-off signal to the MCU (16) of the adjacent lamp unit (10), wherein the light-on signal is used for indicating the MCU of the adjacent lamp unit (10) to control the opening of the LED lamp beads of the adjacent lamp unit (10), and the light-off signal is used for indicating the MCU of the adjacent lamp unit (10) to control the closing of the LED lamp beads of the adjacent lamp unit (10).
4. The modular lamp circuit configuration of claim 2,
the MCU (16) is also used for receiving a brightness adjusting signal or a dimming signal through the LED drive, and adjusting or dimming the brightness of the LED lamp beads of the at least two lamp units (10) according to the brightness adjusting signal or the dimming signal.
5. The modular lamp circuit configuration of claim 4,
the MCU (16) is also used for sending the brightening signal or the dimming signal to the MCU (16) of the adjacent lamp unit (10), wherein the brightening signal is used for indicating the adjacent MCU of the lamp unit (10) to control the brightness of the LED lamp bead of the adjacent lamp unit (10) to be brightened, and the dimming signal is used for indicating the adjacent MCU of the lamp unit (10) to control the brightness of the LED lamp bead of the adjacent lamp unit (10) to be dimmed.
6. A combined lamp circuit arrangement according to claim 1, characterized in that said adjacent lamp units (10) are electrically connected by means of elastic connection pins.
7. Combined lamp circuit arrangement according to claim 6, characterized in that the adjacent lamp units (10) are electrically connected by the resilient connection pins of 4 pins or 6 pins.
8. The modular lamp circuit configuration of claim 1,
the voltage detection module (14) comprises at least: the circuit comprises a first comparator, a first resistor R20, a second resistor R9, a second comparator, a third resistor R21 and a fourth resistor R10, wherein the forward input of the first comparator is the voltage of the lamp unit (10) adjacent to the first side, and the reverse input of the first comparator is the voltage set by the first resistor R20 and the second resistor R9; the positive input of the second comparator is the voltage of the lamp unit (10) adjacent to the second side;
the voltage detection module (14) is further configured to send the abnormal signal of the power module (12) of the lamp unit (10) adjacent to the first side to the MCU (16) when detecting that the output of the first comparator is at a low level; transmitting the abnormal signal of a power module (12) of the lamp unit (10) adjacent to the second side to the MCU (16) when detecting that the output of the second comparator is a low level.
9. A combined lamp circuit arrangement according to claim 8, wherein said lamp unit (10) further comprises: a second voltage detection module (14), the second voltage detection module (14) being connected with the MCU (16), wherein,
the voltage detection module (14) is used for detecting a second voltage of the power supply module (12) of the voltage detection module and sending an alarm signal to the MCU (16) under the condition that the second voltage is smaller than the preset voltage;
the MCU (16) is used for alarming according to the alarm signal.
10. The modular lamp circuit structure of claim 9, wherein said voltage detection module (14) further comprises: a third comparator, wherein the forward input of the third comparator is the voltage of the power module (12) of the third comparator, and the reverse input of the third comparator is the voltage set by the first resistor R20 and the second resistor R9;
the voltage detection module (14) is further configured to send the warning signal to the MCU (16) when detecting that the output of the second comparator is at a low level.
11. The modular lamp circuit structure of claim 10,
the voltage detection module (14) further comprises: a diode D6 and a diode D8, wherein the positive pole of the diode D6 is connected to the power module (12), the negative pole of the diode D6 is connected to the reverse connection terminal of the second comparator through the second resistor R9, the positive pole of the diode D8 is connected to the power module (12) of the adjacent lamp unit (10), and the negative pole of the diode D8 is connected to the reverse connection terminal of the first comparator through the second resistor R9.
12. The modular lamp circuit structure of any of claims 1-11,
the MCU (16) is also used for supplying power to the adjacent lamp units (10) by controlling a relay or an analog switch when the abnormal signal is received.
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| CN202022675991.7U CN215300974U (en) | 2020-11-18 | 2020-11-18 | Combined lamp circuit structure |
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| CN202022675991.7U CN215300974U (en) | 2020-11-18 | 2020-11-18 | Combined lamp circuit structure |
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| CN215300974U true CN215300974U (en) | 2021-12-24 |
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