Parallel power supply illuminating lamp system

Abstract

The utility model discloses a parallel power supply illuminating lamp system which comprises a constant-voltage direct-current power supply, a three-end parallel connection line and a plurality of LED lamps, a constant-voltage direct-current circuit is arranged in the constant-voltage direct-current power supply and used for converting input mains supply alternating current into low-voltage direct current and outputting the low-voltage direct current, and the LED lamps are connected with the three-end parallel connection line. A plurality of three-end parallel connection lines are correspondingly arranged, the LED lamps are respectively connected in parallel through the three-end parallel connection lines and are connected with a low-voltage direct current output end of the constant-voltage direct current power supply, an LED lamp panel circuit is arranged in each LED lamp, and the low-voltage direct current is used for supplying power to each LED lamp panel circuit. Therefore, a plurality of lamps can be connected in parallel. The application requirement that one constant-voltage direct-current power supply supplies power to a plurality of lamps at the same time is met. In the application, the use of a constant-voltage direct-current power supply can be reduced, the cost of the whole system is reduced, and the size of the whole system is smaller.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lamp circuit technical field especially relates to a parallel power supply lighting lamp system. BACKGROUND

[0002] Light emitting diode LED has high luminous efficiency, low energy consumption, long life, material recycling and excellent light performance and other outstanding advantages, therefore, LED as green efficient light source is widely used in the lighting field. The existing lamp usually includes lamp panel and dimming power supply, and the lamp panel is mainly composed of one or more lamp beads. And the dimming power supply is used for providing dimming power supply for the lamp panel. Since the luminous brightness of the LED lamp bead is usually linear with the current, therefore, in dimming, the light brightness control can be realized by adjusting the size of the power supply current of the dimming power supply.

[0003] In the existing lamp dimming technology, one lighting lamp usually needs to be configured with a corresponding power supply for power supply. When multiple lighting lamps need to be set at the lighting place, multiple power supplies need to be correspondingly set. In this way, multiple power supplies occupy a large installation space, and increase the overall cost of the system. SUMMARY

[0004] The utility model aims at at least in a certain extent solves one of the technical problems among the related technical field. For this reason, one purpose of the utility model is to propose a parallel power supply lighting lamp system.

[0005] In order to realize the above-mentioned purpose, according to the parallel power supply lighting lamp system of the utility model embodiment, it includes:

[0006] Constant voltage DC power supply, the constant voltage DC power supply is equipped with constant voltage DC circuit, and the constant voltage DC circuit is used to convert input commercial AC into low voltage DC and output;

[0007] Three-terminal parallel connection line;

[0008] LED lamp lamp, the LED lamp lamp is equipped with multiple, the three-terminal parallel connection line is correspondingly equipped with multiple, each LED lamp lamp is connected in parallel through the three-terminal parallel connection line, and is connected with the low voltage DC output end of the constant voltage DC power supply, each LED lamp lamp is equipped with LED lamp panel circuit, and the low voltage DC is used to power each LED lamp panel circuit.

[0009] Further, according to one embodiment of the utility model, the constant voltage DC circuit includes:

[0010] AC-DC conversion circuit, the AC-DC conversion circuit is used to rectify and filter input AC and output first DC V+;

[0011] A direct current voltage conversion circuit, an input end of the direct current voltage conversion circuit is connected with an output end of the first direct current V+ to reduce the first direct current V+ to the low-voltage direct current and output;

[0012] An alarm prompt circuit, the alarm prompt circuit is connected with the direct current voltage conversion circuit, the alarm prompt circuit is used for detecting the output current of the direct current voltage conversion circuit, and when it is detected that the current exceeds a set value, alarm prompt is carried out.

[0013] Further, according to an embodiment of the utility model, the alarm prompt circuit comprises:

[0014] A comparator U2, a current detection resistor R3 is arranged on a current loop of the direct current voltage conversion circuit, a same phase input end of the comparator U2 is connected with a current detection output end of the current detection resistor R3, and an opposite phase input end of the comparator U2 is connected with a reference voltage output end;

[0015] A triode Q3, a base of the triode Q3 is connected with an output end of the comparator U2 through a resistor R17, and an emitter of the triode Q3 is connected with a first reference ground.

[0016] A loudspeaker B1, one end of the loudspeaker B1 is connected with a collector of the triode Q3, and the other end of the loudspeaker B1 is connected with a direct current power supply VCC.

[0017] Further, according to an embodiment of the utility model, the alarm prompt circuit further comprises:

[0018] A light emitting diode D6, an anode of the light emitting diode D6 is connected with an output end of the comparator U2 through a resistor R19, and a cathode of the light emitting diode D6 is connected with a first reference ground.

[0019] Further, according to an embodiment of the utility model, the direct current voltage conversion circuit comprises:

[0020] A PWM controller;

[0021] A switch tube circuit, the switch tube circuit comprises a MOS tube Q2, a gate of the MOS tube Q2 is connected with a PWM signal output end of the PWM controller through a resistor R11, a source of the MOS tube Q2 is connected with a second reference ground through a resistor R13, the source of the MOS tube Q2 is also connected with the gate of the MOS tube Q2 through a resistor R12, and the source of the MOS tube Q2 is also connected with a current detection end of the PWM controller;

[0022] A transformer TR1, one end of a primary coil of the transformer TR1 is connected with the first direct current V+ output end, the other end of the primary coil of the transformer TR1 is connected with the drain of the MOS tube Q2 through the resistance R8;

[0023] An output circuit, the output includes a diode D4, a capacitor C5, the anode of the diode D4 is connected with one end of the secondary coil of the transformer TR1, the cathode of the diode D4 is connected with one end of the capacitor C5, the other end of the capacitor C5 is connected with the other end of the secondary coil of the transformer TR1, and the two ends of the capacitor C5 output the low-voltage direct current.

[0024] Further, according to one embodiment of the utility model, the direct current voltage conversion circuit further includes:

[0025] An auxiliary power supply circuit, the auxiliary power supply circuit is used for supplying power for the PWM controller, and the auxiliary power supply circuit includes a resistance R9, one end of the resistance R9 is connected with the first direct current V+ output end, and the other end of the resistance R9 is connected with the power supply end of the PWM controller through a resistance R10;

[0026] A voltage feedback circuit, the voltage feedback circuit includes a resistance R6 and a resistance R7, one end of the resistance R6 is connected with one end of the auxiliary coil of the transformer TR1 through a resistance R4, the other end of the auxiliary coil is connected with a second reference ground, one end of the resistance R7 is connected with the other end of the resistance R6, the other end of the resistance R7 is connected with the second reference ground, and the common end of the resistance R6 and the resistance R7 is connected with the voltage feedback end of the PWM controller.

[0027] Further, according to one embodiment of the utility model, the auxiliary power supply circuit further includes:

[0028] A diode D2, the anode of the diode D2 is connected with one end of the auxiliary coil of the transformer TR1 through the resistance R4;

[0029] A triode Q1, the collector of the triode Q1 is connected with the cathode of the diode D2, the emitter of the triode Q1 is connected with the power supply end of the PWM controller through the resistance R10, and the base of the triode Q2 is connected with the collector of the triode Q1 through a resistance R5;

[0030] A voltage stabilizing diode D1, the cathode of the voltage stabilizing diode D1 is connected with the base of the triode Q1, and the anode of the voltage stabilizing diode D1 is connected with the second reference ground.

[0031] A capacitor C1, one end of the capacitor C1 is connected with the emitter of the triode Q1, and the other end of the capacitor C1 is connected with a second reference ground;

[0032] A capacitor C2, two ends of the capacitor C2 are respectively connected with two ends of the voltage stabilizing diode D1.

[0033] Further, according to an embodiment of the utility model, the LED lamp panel circuit comprises:

[0034] A control circuit, the control circuit comprises a controller;

[0035] A voltage conversion circuit, the voltage conversion circuit is used for filtering and voltage conversion output of low voltage direct current output by the constant voltage direct current power supply, so as to supply power for the controller;

[0036] A dimming circuit, the dimming circuit is connected with the controller, so as to output a dimming power supply under the control of the controller;

[0037] An LED lamp circuit, the LED lamp circuit comprises one or more LED lamp strips, each LED lamp strip is connected in parallel, and each LED lamp strip is connected with the dimming circuit.

[0038] Further, according to an embodiment of the utility model, the dimming circuit comprises:

[0039] A constant current controller U6, the power supply end of the constant current controller U3 is connected with the power supply VBUS through the resistance R71, and the dimming control end PWM of the constant current controller U6 is connected with a control end of the controller;

[0040] An inductor L1, one end of the inductor L1 is connected with the adjustment control end Drain of the constant current controller U6, and the other end of the inductor L1 is connected with the LED lamp circuit;

[0041] A capacitor C7, one end of the capacitor C7 is connected with the other end of the inductor L1, and the other end of the capacitor C7 is connected with the power supply VBUS;

[0042] A diode D2, the anode of the diode D2 is connected with the one end of the inductor L1, and the cathode of the diode D2 is connected with the power supply VBUS;

[0043] A current detection resistance R76, one end of the current detection resistance R76 is connected with the current detection end of the constant current controller U3, and the other end of the current detection resistance R76 is connected with a reference ground.

[0044] The parallel power supply lighting lamp system provided by the embodiment of the utility model, through the constant voltage direct current power supply is equipped with constant voltage direct current circuit, the constant voltage direct current circuit is used to convert input commercial AC into low voltage DC, and output, LED lamp lamps and lanterns are equipped with multiple, three end parallel connection lines are correspondingly equipped with multiple, each LED lamp lamps and lanterns are connected in parallel through the three end parallel connection lines, and are connected with the low voltage DC output end of the constant voltage direct current power supply, each LED lamp lamps and lanterns are equipped with LED lamp panel circuit, and the low voltage DC is used to power each LED lamp panel circuit. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The structure block diagram of the parallel power supply lighting lamp system provided by the utility model is provided.

[0046] Figure 2 The constant voltage direct current power supply circuit structure schematic view provided by the utility model is provided.

[0047] Figure 3 The LED lamp panel circuit structure schematic view provided by the utility model is provided.

[0048] Reference signs:

[0049] Constant voltage direct current power supply 10.

[0050] Three end parallel connection lines 20.

[0051] LED lamp 30.

[0052] The utility model aims at realizing, functional characteristics and advantages, and will be further described with reference to the drawings in combination with the embodiment. DETAILED DESCRIPTION

[0053] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be clearly and completely described in combination with the drawings in the embodiment of the utility model below. Unless otherwise defined, all technical and scientific terms used in the text are the same as the meanings understood by the personnel in the technical field belonging to the utility model. The terms used in the specification of the utility model in the text are only for the purpose of describing the specific embodiment, and are not intended to limit the utility model.

[0054] Reference to“an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in one embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0055] With reference to Figure 1 The embodiment of the application provides a parallel power supply lighting lamp system, which comprises a constant-voltage direct-current power supply 10, three-terminal parallel connection lines 20 and LED lamp fixtures. The constant-voltage direct-current power supply 10 is internally provided with a constant-voltage direct-current circuit, which is used for converting input commercial alternating current into low-voltage direct current and outputting. The LED lamp fixtures are provided in plurality, and the three-terminal parallel connection lines 20 are correspondingly provided in plurality. Each of the LED lamp fixtures is connected in parallel through the three-terminal parallel connection lines 20 and is connected with a low-voltage direct-current output end of the constant-voltage direct-current power supply 10. Each of the LED lamp fixtures is internally provided with an LED lamp plate circuit, and the low-voltage direct current is used for supplying power to each of the LED lamp plate circuits.

[0056] Specifically, as shown in Figure 1 The fixtures can be provided in plurality, and the three-terminal parallel connection lines 20 can also be provided in plurality. A first end of one of the three-terminal parallel connection lines 20 can be connected with a power output end of the constant-voltage direct-current power supply 10, so as to lead out low-voltage direct current of the constant-voltage direct-current power supply 10 and supply power to one of the LED lamp fixtures through a second end. A third end of the three-terminal parallel connection line 20 can continue to lead out low-voltage direct current to the outside, and another three-terminal parallel connection line 20 can be connected to another fixture and continue to lead out low-voltage direct current to the outside. In this way, a plurality of fixtures can be connected in parallel. The application requirement that one constant-voltage direct-current power supply 10 supplies power to a plurality of fixtures at the same time is realized. In application, the use of the constant-voltage direct-current power supply 10 can be reduced, the cost of the overall system is reduced, and the volume of the overall system is relatively small.

[0057] With reference to Figure 2The constant-voltage direct-current circuit comprises an AC-DC conversion circuit, a DC voltage conversion circuit and an alarm prompting circuit, the AC-DC conversion circuit is used for rectifying and filtering input AC power and outputting first DC power V+; the input end of the DC voltage conversion circuit is connected with the output end of the first DC power V+ to step down the first DC power V+ to the low-voltage direct-current power and output; the alarm prompting circuit is connected with the DC voltage conversion circuit, the alarm prompting circuit is used for detecting the output current of the DC voltage conversion circuit, and when the current exceeds a set value, an alarm is prompted. The AC power supply of 220V is rectified and stabilized by the AC-DC conversion circuit to output stable high-voltage direct-current power. Since the high-voltage direct-current power cannot be directly supplied to the lamp, the DC-DC direct-current voltage conversion is performed on the high-voltage direct-current power by the DC voltage conversion circuit, so as to convert the low-voltage direct-current power. For example, the low-voltage direct-current power of 24V can be converted and supplied to the lamp. The alarm prompting circuit can alarm the current of the low-voltage direct-current power to prompt whether the number of parallel LED lamps 30 exceeds the set number. When the number of parallel LED lamps 30 exceeds the set number, the low-voltage direct-current power supply backflow exceeds the set current value. In this way, the alarm prompting circuit can alarm to prompt the user not to continue to parallel the LED lamps 30. The stable power supply of the system is ensured, and the abnormal situation of overloading power supply is avoided.

[0058] Referring to Figure 2 The alarm prompting circuit comprises a comparator U2, a triode Q3 and a loudspeaker B1, a current detection resistor R3 is arranged on the current loop of the DC voltage conversion circuit, the same-phase input end of the comparator U2 is connected with the current detection output end of the current detection resistor R3, and the opposite-phase input end of the comparator U2 is connected with a reference voltage output end; the base of the triode Q3 is connected with the output end of the comparator U2 through a resistor R17, the emitter of the triode Q3 is connected with a first reference ground, one end of the loudspeaker B1 is connected with the collector of the triode Q3, and the other end of the loudspeaker B1 is connected with a DC power supply VCC.

[0059] Specifically, as Figure 2The working process of the alarm prompt circuit is that the current in the low-voltage direct current loop is detected through the current detection resistor R3, and the detected current value is compared with the reference voltage. When the current in the low-voltage direct current loop is greater than the reference voltage, the comparator U2 can output a high-level signal, and can make the transistor Q3 conduct, thereby controlling the loudspeaker B1 to emit an alarm prompt sound. Conversely, when the current in the low-voltage direct current loop is not greater than the reference voltage, the transistor Q3 is cut off, and the loudspeaker B1 does not emit an alarm sound. The reference voltage can be output after the low-voltage direct current is converted by the linear voltage converter U3, and is obtained after being divided by the resistor R14 and the resistor R15.

[0060] Referring to Figure 2 The alarm prompt circuit further comprises a light-emitting diode D6, an anode of the light-emitting diode D6 is connected with an output end of the comparator U2 through a resistor R19, and a cathode of the light-emitting diode D6 is connected with a first reference ground. In other embodiments, the prompt can also be in the form of LED light indication. For example, the lamp shell can be provided with the text "the number of lamps exceeds the number". And the user is prompted by the lighting or extinguishing of the light-emitting diode D6. When the current in the low-voltage direct current loop is greater than the reference voltage, the comparator U2 can output a high-level signal, and can light the light-emitting diode D6 to emit light indication.

[0061] Referring to Figure 2 The direct current voltage conversion circuit comprises a PWM controller, a switch tube circuit, a transformer TR1 and an output circuit. The switch tube circuit comprises a MOS tube Q2, a gate of the MOS tube Q2 is connected with a PWM signal output end of the PWM controller through a resistor R11, a source of the MOS tube Q2 is connected with a second reference ground through a resistor R13, the source of the MOS tube Q2 is also connected with the gate of the MOS tube Q2 through a resistor R12, and the source of the MOS tube Q2 is also connected with a current detection end of the PWM controller. One end of a primary coil of the transformer TR1 is connected with the first direct current V+ output end, the other end of the primary coil of the transformer TR1 is connected with a drain of the MOS tube Q2 through a resistor R8. The output comprises a diode D4 and a capacitor C5. An anode of the diode D4 is connected with one end of a secondary coil of the transformer TR1, a cathode of the diode D4 is connected with one end of the capacitor C5, the other end of the capacitor C5 is connected with the other end of the secondary coil of the transformer TR1, and two ends of the capacitor C5 output the low-voltage direct current.

[0062] Specifically, as Figure 2The working process of the direct current voltage conversion circuit is shown in the figure. The PWM controller can output PWM signals with adjustable duty cycle to control the on-off of the MOS tube Q2, and the current on the primary coil of the transformer TR1 is modulated by the MOS tube Q2. The modulated current is output after being rectified by the output circuit, so as to output the low-voltage direct current to power the LED lamp. The current on the primary coil of the transformer TR1 can be sampled by the resistor R13. In this way, the PWM controller can adjust the current loop and perform overcurrent protection. The resistor R12 is the bias resistor of the MOS tube Q2, and the resistor R11 limits the current between the PWM controller and the MOS tube Q2.

[0063] Referring to Figure 2 The direct current voltage conversion circuit further comprises an auxiliary power supply circuit and a voltage feedback circuit. The auxiliary power supply circuit is used to power the PWM controller, and the auxiliary power supply circuit comprises a resistor R9. One end of the resistor R9 is connected to the first direct current V+ output end, and the other end of the resistor R9 is connected to the power supply end of the PWM controller through a resistor R10. The first direct current V+ can be introduced into the power supply end of the PWM controller through the resistor R9 to provide a starting power voltage for the PWM controller.

[0064] The voltage feedback circuit comprises a resistor R6 and a resistor R7. One end of the resistor R6 is connected to one end of the auxiliary coil of the transformer TR1 through a resistor R4, and the other end of the auxiliary coil is connected to the second reference ground. One end of the resistor R7 is connected to the other end of the resistor R6, and the other end of the resistor R7 is connected to the second reference ground. The common end of the resistors R6 and R7 is connected to the voltage feedback end of the PWM controller.

[0065] Specifically, the voltage of the auxiliary coil of the transformer TR1 can be fed back to the feedback voltage detection end of the PWM controller through the voltage feedback circuit. Since the voltage of the auxiliary coil of the transformer TR1 is proportional to the voltage of the secondary coil, the PWM controller can obtain the output voltage according to the voltage of the auxiliary coil of the transformer TR1, and then adjust the PWM duty cycle in real time according to the feedback voltage to realize stable output control of the output voltage. The resistors R6 and R7 constitute a voltage dividing circuit, which can output the voltage feedback of the auxiliary coil of the transformer TR1 to the voltage feedback end of the PWM controller after voltage division.

[0066] Referring to Figure 2, the auxiliary power supply circuit further comprises: diode D2, triode Q1, zener diode D1, capacitor C1 and capacitor C2, the anode of the diode D2 is connected with one end of the auxiliary coil of the transformer TR1 through the resistor R4; the collector of the triode Q1 is connected with the cathode of the diode D2, the emitter of the triode Q1 is connected with the power supply end of the PWM controller through the resistor R10, the base of the triode Q2 is connected with the collector of the triode Q1 through the resistor R5; the cathode of the zener diode D1 is connected with the base of the triode Q2, and the anode of the zener diode D1 is connected with the second reference ground;

[0067] One end of the capacitor C1 is connected with the emitter of the triode Q1, and the other end of the capacitor C1 is connected with the second reference ground; the two ends of the capacitor C2 are respectively connected with the two ends of the zener diode D1.

[0068] Specifically, after the power supply introduced by the PWM controller through the resistor R9 is started, the auxiliary power supply circuit can continue to supply power to the PWM controller. The auxiliary power supply circuit rectifies the output power supply of the auxiliary coil of the transformer TR1 through the diode D2, and then makes the triode Q1 conductive to the power supply end of the PWM controller, so as to supply power to the power supply end of the PWM controller. The output power supply of the triode Q1 can be controlled by the zener diode D1, when the output voltage of the auxiliary coil of the transformer TR1 is too high, the diode D1 is turned on, and the base of the triode Q1 is pulled down to low level, and then the triode Q1 is cut off, so as to realize the stability of the power supply voltage of the power supply end of the PWM controller.

[0069] Referring to Figure 3 , the LED lamp panel circuit comprises: a control circuit, a voltage conversion circuit, a dimming circuit and an LED lamp circuit, the control circuit comprises a controller; the voltage conversion circuit is used for filtering and voltage conversion output of the low-voltage direct-current power output by the constant-voltage direct-current power supply 10, to supply power to the controller;

[0070] The dimming circuit is connected with the controller to output a dimming power supply under the control of the controller; the LED lamp circuit comprises one or more LED lamp strips, each LED lamp strip is connected in parallel, and each LED lamp strip is connected with the dimming circuit.

[0071] As Figure 3As shown in FIG. 1, the constant voltage DC power supply 10 can be connected to the voltage conversion circuit, and the voltage conversion circuit can be connected to the controller. The controller can be connected to the dimming circuit. The dimming circuit can be connected to the LED lamp circuit. As shown in FIG. 1, the constant voltage DC power supply 10 can be connected to the voltage conversion circuit, and the voltage conversion circuit can be connected to the controller. The controller can be connected to the dimming circuit. The dimming circuit can be connected to the LED lamp circuit. The constant voltage DC power supply 10 can output a constant voltage DC power supply to the voltage conversion circuit. The voltage conversion circuit can convert the constant voltage DC power supply output by the constant voltage DC power supply 10 and output the converted constant voltage DC power supply to the controller. The controller can control the dimming circuit. The controller can receive a dimming control signal through an IRdata signal end, and output a corresponding duty cycle signal to the dimming circuit through a PWM signal end. The dimming circuit can control the LED lamp circuit.

[0072] As shown in FIG. 1, Figure 3 As shown in FIG. 1, the dimming circuit can include a constant current controller U6, an inductor L1, a capacitor C7, a diode D2, and a current detection resistor R76. A power supply end of the constant current controller U6 can be connected to the power supply VBUS through a resistor R71. A dimming control end PWM of the constant current controller U6 can be connected to a control end of the controller. One end of the inductor L1 can be connected to a regulation control end Drain of the constant current controller U3. The other end of the inductor L1 can be connected to the LED lamp circuit. One end of the capacitor C7 can be connected to the other end of the inductor L1. The other end of the capacitor C7 can be connected to the power supply VBUS. An anode of the diode D2 can be connected to the one end of the inductor L1. A cathode of the diode D2 can be connected to the power supply VBUS. One end of the current detection resistor R76 can be connected to a current detection end of the constant current controller U3. The other end of the current detection resistor R76 can be connected to a reference ground.

[0073] Specifically, the dimming circuit can constitute a BUCK constant current circuit. The diode D2 can be a freewheeling diode. The inductor L1 and the capacitor C7 can be voltage regulation and filtering devices, respectively. The constant current controller U6 can detect the current of the circuit through the current detection resistor R76, and adjust and control the current according to the current of the circuit to ensure the stability of the output current. The size of the current of the dimming circuit can be controlled by the PWM signal output by the controller. Since the luminous intensity of the LED lamp is usually linearly related to the current, the luminous intensity can be adjusted and controlled by adjusting the overall circuit current of the LED lamp circuit.

[0074] As shown in FIG. 1, Figure 3 As shown in FIG. 1, the LED lamp circuit can include a plurality of LED lamp strips. The LED lamp strips can be connected to the dimming circuit through LED-power supply ends, so as to be controlled by the dimming circuit to adjust and control the luminous intensity.

[0075] The above are only embodiments of the present application, but do not limit the patent range of the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace part of the technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the protection scope of the present application.

[0076] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and modifications to the above embodiments without departing from the principles and purposes of the present application within the scope of the present application.

Claims

1. A parallel powered lighting lamp system, characterized in that, The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit.

2. The parallel powered lighting lamp system of claim 1, wherein, The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit.

3. The parallel powered lighting lamp system of claim 2, wherein, The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit.

4. The parallel powered lighting lamp system of claim 3, wherein, The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit.

5. The parallel powered lighting lamp system of claim 2, wherein, The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates to a constant voltage DC power supply, three parallel connection lines, LED lamp fixtures, and a constant voltage DC circuit. The utility model relates An output circuit, which comprises a diode D4, an anode of the diode D4 being connected with one end of a secondary coil of the transformer TR1, a cathode of the diode D4 being connected with one end of a capacitor C5, the other end of the capacitor C5 being connected with the other end of the secondary coil of the transformer TR1, and both ends of the capacitor C5 outputting the low-voltage direct current.

6. The parallel powered lighting lamp system of claim 5, wherein, The direct-current voltage conversion circuit further comprises: An auxiliary power supply circuit for supplying power to the PWM controller, the auxiliary power supply circuit comprising a resistor R9, one end of the resistor R9 being connected with the first direct-current voltage output terminal, and the other end of the resistor R9 being connected with a power supply terminal of the PWM controller through a resistor R10; A voltage feedback circuit comprising a resistor R6 and a resistor R7, one end of the resistor R6 being connected with one end of an auxiliary coil of the transformer TR1 through a resistor R4, the other end of the auxiliary coil being connected with a second reference ground, one end of the resistor R7 being connected with the other end of the resistor R6, the other end of the resistor R7 being connected with the second reference ground, and a common terminal of the resistor R6 and the resistor R7 being connected with a voltage feedback terminal of the PWM controller.

7. The parallel powered lighting lamp system of claim 6, wherein, The auxiliary power supply circuit further comprises: A diode D2, an anode of the diode D2 being connected with one end of the auxiliary coil of the transformer TR1 through the resistor R4; A triode Q1, a collector of the triode Q1 being connected with a cathode of the diode D2, an emitter of the triode Q1 being connected with the power supply terminal of the PWM controller through the resistor R10, and a base of the triode Q2 being connected with the collector of the triode Q1 through a resistor R5; A voltage stabilizing diode D1, a cathode of the voltage stabilizing diode D1 being connected with the base of the triode Q1, and an anode of the voltage stabilizing diode D1 being connected with the second reference ground; A capacitor C1, one end of the capacitor C1 being connected with the emitter of the triode Q1, and the other end of the capacitor C1 being connected with the second reference ground; A capacitor C2, both ends of the capacitor C2 being connected with both ends of the voltage stabilizing diode D1 respectively.

8. The parallel powered lighting lamp system of claim 1, wherein, The LED lamp panel circuit comprises: A control circuit comprising a controller; A voltage conversion circuit for filtering and voltage converting the low-voltage direct current output by the constant-voltage direct-current power supply to supply power to the controller; A dimming circuit connected with the controller to output a dimming power supply under the control of the controller; An LED lamp circuit comprising one or more LED lamp strips, each LED lamp strip being connected in parallel, and each LED lamp strip being connected with the dimming circuit.

9. The parallel powered lighting lamp system of claim 8, wherein, The dimming circuit comprises: A constant-current controller U6, a power supply terminal of the constant-current controller U3 being connected with a power supply VBUS through a resistor R71, and a dimming control terminal PWM of the constant-current controller U6 being connected with a control terminal of the controller; An inductor L1, one end of the inductor L1 is connected with the adjusting control end Drain of the constant current controller U6, the other end of the inductor L1 is connected with the LED lamp circuit; A capacitor C7, one end of the capacitor C7 is connected with the other end of the inductor L1, the other end of the capacitor C7 is connected with the power supply VBUS; A diode D2, the anode of the diode D2 is connected with the one end of the inductor L1, the cathode of the diode D2 is connected with the power supply VBUS; A current detection resistor R76, one end of the current detection resistor R76 is connected with the current detection end of the constant current controller U3, the other end of the current detection resistor R76 is connected with the reference ground.

Images