CN211509347U - Color temperature adjustable LED emergency power supply driving circuit and LED lamp - Google Patents
Color temperature adjustable LED emergency power supply driving circuit and LED lamp Download PDFInfo
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- CN211509347U CN211509347U CN201922163469.8U CN201922163469U CN211509347U CN 211509347 U CN211509347 U CN 211509347U CN 201922163469 U CN201922163469 U CN 201922163469U CN 211509347 U CN211509347 U CN 211509347U
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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
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- 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
Abstract
A color temperature adjustable LED emergency power supply driving circuit and an LED lamp comprise an alternating current-direct current conversion circuit, an emergency power supply interface, a color temperature control assembly and a color temperature adjusting circuit; the alternating current-direct current conversion circuit is configured to convert input alternating current into a first driving voltage; the emergency power supply interface is configured to access an emergency power supply voltage; the color temperature control component is configured to generate a color temperature adjusting signal according to the user input; the color temperature adjusting circuit is configured to adjust the illumination color temperature of the LED module according to the color temperature adjusting signal and the emergency power supply voltage or adjust the illumination color temperature of the LED module according to the color temperature adjusting signal and the first driving voltage; the color temperature of the LED module can be adjusted in the process of emergency lighting by using the emergency power supply so as to meet different color light application requirements, and the LED module has the advantages of simple circuit structure, low cost and strong practicability; meanwhile, under the condition that the mains supply is normally supplied for illumination, the illumination brightness adjustment and the illumination color temperature adjustment of the LED module can be realized, and the practicability of the LED lamp is improved.
Description
Technical Field
The utility model belongs to the technical field of the LED illumination, especially, relate to a colour temperature adjustable LED emergency power drive circuit and LED lamps and lanterns.
Background
Most of the light emitted by the illumination light source is generally called white light, so the color temperature of the light source or the related color temperature is used to refer to the degree of the relative white of the light color, so as to quantify the light color performance of the light source. The color temperature of the light source is different, and the feeling brought to the user is also different, for example, the color temperature is below 3000K, and the light color is reddish to give the feeling of warmth; has steady atmosphere and warm feeling; the color temperature is in the middle of 3000-6000K, and people have no particularly obvious visual psychological effect and have a refreshing feeling under the color tone, so the color temperature is called as 'neutral' color temperature; the color temperature is more than 6000K, the light color is blue, and the feeling of cool and clear is given to people; under the irradiation of a high-color-temperature light source, if the brightness is not high, people have a negative atmosphere; under the irradiation of a low color temperature light source, the brightness is too high, and a stuffy feeling is brought to people. Therefore, it is important to adjust the color temperature during the lighting process to meet different lighting requirements.
At present, in a traditional LED drive circuit, an emergency power supply drive scheme is compatible, and an emergency power supply (such as a standby battery) is connected to the output end of the drive circuit, so that the output of the emergency power supply is automatically disconnected when commercial power is normal, a main drive power supply supplies power to an LED lamp panel, and the commercial power is automatically switched to the emergency power supply to supply power to the LED lamp panel when the commercial power is cut off; the color temperature can be adjusted, the output currents of the two paths of outputs are mainly controlled through a switch or software, so that adjustment of different color temperatures is achieved, the corresponding circuit structure is complex, and the LED lighting lamp does not have an emergency power supply and can still adjust the color temperature under the emergency power supply, so that the traditional LED lighting current cannot fully and effectively meet different lighting requirements of users.
Therefore, the problems that the color temperature cannot be adjusted in the lighting process by using the emergency power supply and the color temperature adjusting circuit is complex in structure and high in cost exist in the traditional technical scheme.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a colour temperature adjustable LED emergency power supply drive circuit aims at solving the utilization emergency power supply who exists among the traditional technical scheme and can not carry out the colour temperature regulation in the lighting process to and colour temperature regulation circuit structure is complicated, problem with high costs.
The utility model provides a first aspect of the embodiment provides a colour temperature adjustable LED emergency power drive circuit, include:
an ac-dc conversion circuit configured to convert an input ac power into a first driving voltage;
the emergency power supply interface is connected with the alternating current-direct current conversion circuit and is configured to be connected with an emergency power supply voltage;
the color temperature control assembly is connected with the alternating current-direct current conversion circuit and the emergency power supply interface and is configured to generate a color temperature adjusting signal according to user input;
and the color temperature adjusting circuit is connected with the color temperature control assembly and the LED module and is configured to adjust the illumination color temperature of the LED module according to the color temperature adjusting signal and the emergency power supply voltage or adjust the illumination color temperature of the LED module according to the color temperature adjusting signal and the first driving voltage.
In one embodiment, the ac-dc conversion circuit includes:
a switching power supply circuit configured to generate a first direct current and a second direct current from the input alternating current;
the brightness control circuit is connected with the switching power supply circuit and is configured to generate a brightness adjusting control signal according to the first direct current, the second direct current and a brightness adjusting signal;
and the brightness adjusting circuit is connected with the brightness control circuit and the switching power supply circuit and is configured to generate the first driving voltage according to the first direct current and the brightness adjusting control signal.
In one embodiment, the ac-dc conversion circuit further includes:
and the dimming component is connected with the brightness control circuit and is configured to generate the brightness adjusting signal according to user input.
In one embodiment, the color temperature adjustable LED emergency power driving circuit further includes:
the power adjusting component is connected with the brightness adjusting circuit and is configured to generate a power adjusting signal according to user operation;
the brightness adjustment circuit is specifically configured to generate the first driving voltage according to the brightness adjustment control signal, the power adjustment signal, and the first direct current.
In one embodiment, the color temperature control assembly includes, but is not limited to, one of a shift adjustment switch, a dial adjustment switch, a push button switch, and a push button switch.
In one embodiment, the color temperature control assembly comprises: the first gating switch, the first diode and the second diode;
a first normally-open end of the first gate switch is connected to an anode of the first diode and an anode of the second diode;
the normally closed end of the first gating switch is a positive voltage input end of the color temperature control assembly, the cathode of the first diode and the cathode of the second diode are jointly formed into a first sub color temperature adjusting signal output end of the color temperature control assembly, the second normally open end of the first gating switch is a second sub color temperature adjusting signal output end of the color temperature control assembly, and the third normally open end of the first gating switch is a third sub color temperature adjusting signal output end of the color temperature control assembly;
and the first sub color temperature adjusting signal output end of the color temperature control assembly, the second sub color temperature adjusting signal output end of the color temperature control assembly and the third sub color temperature adjusting signal output end of the color temperature control assembly form a color temperature adjusting signal output end of the color temperature control assembly together.
In one embodiment, the color temperature adjusting circuit includes: the circuit comprises a first field effect transistor, a second field effect transistor, a first resistor and a second resistor;
the source electrode of the first field effect transistor is connected with the first end of the first resistor, the source electrode of the second field effect transistor and the first end of the second resistor, the grid electrode of the first field effect transistor is connected with the second end of the first resistor, and the grid electrode of the second field effect transistor is connected with the second end of the second resistor;
the source electrode of the first field effect transistor, the first end of the first resistor, the source electrode of the second field effect transistor and the first end of the second resistor are jointly formed into a negative voltage input end of the color temperature adjusting circuit;
the grid electrode of the first field effect transistor is a first sub color temperature adjusting signal input end of the color temperature adjusting circuit;
the grid electrode of the second field effect transistor is a second sub color temperature adjusting signal input end of the color temperature adjusting circuit;
the grid electrode of the first field effect transistor and the grid electrode of the second field effect transistor are jointly formed into a third sub color temperature adjusting signal input end of the color temperature adjusting circuit;
the first sub color temperature adjusting signal input end of the color temperature adjusting circuit, the second sub color temperature adjusting signal input end of the color temperature adjusting circuit and the third sub color temperature adjusting signal input end of the color temperature adjusting circuit are jointly formed into the color temperature adjusting signal input end of the color temperature adjusting circuit.
In one embodiment, the brightness adjustment control circuit comprises a single chip microcomputer.
In one embodiment, the brightness adjusting circuit includes: the adjustable buck voltage circuit comprises an adjustable buck driver, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a third field effect transistor, a third diode, a first inductor and a first common-mode inductor;
the dimming control input end of the dimmable buck driver is the brightness adjustment control signal input end of the brightness adjustment circuit;
the compensation node end of the adjustable optical buck driver is connected with the first end of the third capacitor, the second end of the third capacitor is connected with a power ground, the field effect tube current detection input end of the adjustable optical buck driver is connected with the first end of the fourth resistor, the gate driver end of the adjustable optical buck driver is connected with the first end of the third resistor, the adjusting output end of the adjustable optical buck driver is connected with the first end of the first capacitor, the ground end of the adjustable optical buck driver and the second end of the first capacitor are connected with the power ground, the second end of the third resistor is connected with the gate of the third field effect tube, the second end of the fourth resistor is connected with the source electrode of the third field effect tube, the second end of the second capacitor and the first end of the fifth resistor, and the second end of the fifth resistor is connected with the power ground, a drain electrode of the third field effect transistor, a first end of the second capacitor, and a first end of the first inductor are connected to an anode of the third diode, a cathode of the third diode is connected to a power supply terminal of the dimmable buck driver, a first end of the sixth resistor, a first end of the seventh resistor, a first end of the eighth resistor, and a first end of the ninth resistor, a current detection input terminal of the dimmable buck driver, a second end of the sixth resistor, a second end of the seventh resistor, a second end of the eighth resistor, a second end of the ninth resistor, and a first end of the fourth capacitor are connected to a fourth end of the first common mode inductor, and a second end of the first inductor is connected to a second end of the fourth capacitor and a first end of the first common mode inductor;
the cathode of the third diode is a first direct current input end of the brightness adjusting circuit;
the current detection input end of the adjustable light step-down driver is the power adjustment signal input end of the brightness adjustment circuit;
the second end of the first common-mode inductor and the third end of the first common-mode inductor jointly form a first driving voltage output end of the brightness adjusting circuit and an emergency power supply voltage input end of the brightness adjusting circuit.
The utility model provides a second aspect of the embodiment provides a LED lamps and lanterns, LED lamps and lanterns include the aforesaid colour temperature adjustable LED emergency power source drive circuit.
The embodiment of the utility model provides a convert the input alternating current into first driving voltage through the alternating current-direct current converting circuit and give off light with the drive LED module, the external power supply voltage can be inserted to the emergency power source interface, the colour temperature control subassembly generates the colour temperature regulation signal according to user input, colour temperature regulating circuit throws light on the colour temperature according to colour temperature regulation signal and first driving voltage to the LED module and adjusts or throw light on the colour temperature according to colour temperature regulation signal and emergency power source voltage to the LED module, the realization is utilizing emergency power source to carry out the adjustable colour temperature of emergency lighting's in-process LED module, in order to satisfy different chromatic light application demands, the circuit structure is simple, the cost is reduced, the practicality and the reliability of colour temperature adjustable LED emergency power source driving circuit have.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of an LED emergency power supply driving circuit with adjustable color temperature according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of an LED emergency power driving circuit with adjustable color temperature according to an embodiment of the present invention;
fig. 3 is another schematic structural diagram of an LED emergency power driving circuit with adjustable color temperature according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of an LED emergency power driving circuit with adjustable color temperature according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of an example of the LED emergency power supply driving circuit with adjustable color temperature provided by the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a schematic structural diagram of an LED emergency power driving circuit with adjustable color temperature according to an embodiment of the present invention shows only the relevant portions of the embodiment for convenience of description, and the detailed description is as follows:
a color temperature tunable LED emergency power supply driving circuit, comprising: alternating current-direct current conversion circuit 10, emergency power source interface 11, colour temperature control component 12 and colour temperature regulating circuit 13.
An ac-dc conversion circuit 10 configured to convert an input alternating current into a first drive voltage; the emergency power supply interface 11 is connected with the alternating current-direct current conversion circuit 10 and is configured to be connected with an emergency power supply voltage; the color temperature control component 12 is connected with the alternating current-direct current conversion circuit 10 and the emergency power interface 11 and is configured to generate a color temperature adjusting signal according to user input; and the color temperature adjusting circuit 13 is connected with the color temperature control component 12 and the LED module 01 and is configured to adjust the illumination color temperature of the LED module 01 according to the color temperature adjusting signal and the voltage of the emergency power supply or adjust the illumination color temperature of the LED module 01 according to the color temperature adjusting signal and the first driving voltage.
In specific implementation, the LED module 01 is a double-color LED module, and when the input alternating current (such as mains supply) is powered off or fails and can not supply power normally, the emergency power supply interface 11 can be connected to the emergency power supply voltage to supply power to the LED module 01, so that the lighting requirement is guaranteed. Meanwhile, at least one color temperature gear can be selected through the color temperature control component 12, and the output proportion of two paths of bicolor current is adjusted by matching with the color temperature adjusting circuit 13, so that the function of adjusting various color temperatures of the LED module 01 is realized.
In one embodiment, the color temperature control assembly 12 includes, but is not limited to, a shift switch, a dial switch, a push button switch, or a push button switch. The user can adjust the colour temperature of LED module 01 through colour temperature control assembly to satisfy different lighting application demands. Optionally, the color temperature control component 12 can also be replaced by software APP, through which the user realizes the adjustment of the color temperature.
Referring to fig. 2, in one embodiment, the ac-dc conversion circuit 10 includes: a switching power supply circuit 101, a luminance control circuit 102, and a luminance adjustment circuit 103.
A switching power supply circuit 101 configured to generate a first direct current and a second direct current from an input alternating current; a brightness control circuit 102 connected to the switching power supply circuit 101 and configured to generate a brightness adjustment control signal according to the first direct current, the second direct current, and the brightness adjustment signal; and a brightness adjusting circuit 103 connected to the brightness control circuit 102 and the switching power supply circuit 101 and configured to generate a first driving voltage according to the first direct current and the brightness adjusting control signal.
Referring to fig. 3, in one embodiment, the ac-dc conversion circuit 10 further includes: a dimming component 104.
And a dimming component 104 connected to the brightness control circuit 102 and configured to generate a brightness adjustment signal according to a user input.
In a specific implementation, the switching power supply circuit 101 outputs a first direct current and a second direct current after performing voltage conversion, rectification and voltage stabilization according to an input alternating current (mains). Optionally, the dimming component 104 includes a dimmer, a user performs dimming operation through the dimmer and correspondingly generates a brightness adjustment signal, and the brightness control circuit 102 generates a brightness adjustment control signal according to the brightness adjustment signal, the first direct current and the second direct current, so that the brightness adjustment circuit 103 adjusts the output voltage of the ac-dc conversion circuit 10 according to the first direct current and the brightness adjustment control signal to generate a first driving voltage, thereby driving the LED module 01 to emit light, and achieving the purpose of adjusting the illumination brightness of the LED module 01.
Referring to fig. 4, in one embodiment, the ac-dc conversion circuit 10 further includes: a power conditioning assembly 105.
A power adjusting component 105 connected with the brightness adjusting circuit 103 and configured to generate a power adjusting signal according to a user operation; the brightness adjustment circuit 103 is specifically configured to generate a first driving voltage according to the brightness adjustment control signal, the power adjustment signal, and the first direct current.
In an implementation, the power adjustment component 105 includes an adjustable control switch, and the maximum illumination power of the LED module 01 can be set by the power adjustment component 105, for example, the maximum illumination power of the LED module 01 is set to 30W or 40W or 50W by the power adjustment component 105. The dimming component 104, the brightness control circuit 102 and the brightness adjusting circuit 103 are matched to realize the actual illumination power adjustment of 0W to 30W, or 0W to 40W, or 0W to 50W, so that the practicability of the LED emergency power supply driving circuit with adjustable color temperature is improved.
Referring to fig. 5, in one embodiment, the color temperature control component 12 includes: a first gate switch K1, a first diode D1, and a second diode D2.
The first normally-open end 1 of the first gate switch K1 is connected to the anode of the first diode D1 and the anode of the second diode D2; the normally closed end 3 of the first gating switch K1 is a positive voltage input end of the color temperature control component 12, the cathode of the first diode D1 and the cathode of the second diode D2 jointly form a first sub color temperature adjusting signal output end of the color temperature control component 12, the second normally open end 4 of the first gating switch K1 is a second sub color temperature adjusting signal output end of the color temperature control component 12, and the third normally open end 5 of the first gating switch K1 is a third sub color temperature adjusting signal output end of the color temperature control component 12.
The first sub color temperature adjusting signal output end of the color temperature control component 12, the second sub color temperature adjusting signal output end of the color temperature control component 12 and the third sub color temperature adjusting signal output end of the color temperature control component 12 together form a color temperature adjusting signal output end of the color temperature control component 12.
In a specific implementation, the first gating switch K1 can be current-limited and protected by connecting a resistor R01 in series between the normally closed terminal 3 of the first gating switch K1 and the positive voltage input terminal LED +, so as to prevent a large current from damaging the first gating switch K1.
Referring to fig. 5, in one embodiment, the color temperature adjusting circuit 13 includes: the circuit comprises a first field effect transistor Q1, a second field effect transistor Q2, a first resistor R1 and a second resistor R2.
The source of the first field effect transistor Q1 is connected to the first end of the first resistor R1, the source of the second field effect transistor Q2 and the first end of the second resistor R2, the gate of the first field effect transistor Q1 is connected to the second end of the first resistor R1, and the gate of the second field effect transistor Q2 is connected to the second end of the second resistor R2.
The source of the first fet Q1, the first terminal of the first resistor R1, the source of the second fet Q2, and the first terminal of the second resistor R2 together constitute a negative voltage input terminal of the color temperature adjustment circuit 13.
The grid electrode of the first field effect transistor Q1 is a first sub color temperature adjusting signal input end of the color temperature adjusting circuit 13; the grid electrode of the second field effect transistor Q2 is a second sub color temperature adjusting signal input end of the color temperature adjusting circuit 13; the gate of the first fet Q1 and the gate of the second fet Q2 are commonly configured as a third sub-color temperature adjustment signal input terminal of the color temperature adjustment circuit 13.
The first sub color temperature adjustment signal input terminal of the color temperature adjustment circuit 13, the second sub color temperature adjustment signal input terminal of the color temperature adjustment circuit 13, and the third sub color temperature adjustment signal input terminal of the color temperature adjustment circuit 13 are collectively configured as a color temperature adjustment signal input terminal of the color temperature adjustment circuit 13.
Referring to fig. 5, in one embodiment, the brightness adjusting circuit 103 includes: the adjustable buck driver circuit comprises a dimmable buck driver U5, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R01, a seventh resistor R02, an eighth resistor R03, a ninth resistor R04, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C01, a third field-effect transistor Q3, a third diode D3, a first inductor L3 and a first common-mode inductor LF 1.
The dimming control input DIM of the dimmable buck driver U5 is the dimming control signal input of the dimming circuit 103.
A compensation node end VC of the adjustable optical buck driver U5 is connected with a first end of a third capacitor C3, a second end of a third capacitor C3 is connected with a power ground, a field effect tube current detection input end CS of the adjustable optical buck driver U5 is connected with a first end of a fourth resistor R4, a GATE driver end GATE of the adjustable optical buck driver U5 is connected with a first end of a third resistor R3, an adjustment output end GRE of the adjustable optical buck driver U5 is connected with a first end of the first capacitor C1, a ground end GND of the adjustable optical buck driver U5 and a second end of the first capacitor C1 are connected with the power ground, a second end of the third resistor R3 is connected with a GATE of the third field effect tube Q3, a second end of the fourth resistor R4 is connected with a source of the third field effect tube Q3, a second end of the second capacitor C2 and a first end of the fifth resistor R5, a second end of the fifth resistor R5 is connected with the power ground, a drain electrode of the third resistor Q3 is connected with the power, A first end of the second capacitor C2 and a first end of the first inductor L3 are connected to an anode of the third diode D3, a cathode of the third diode D3 is connected to the power supply terminal VCC of the dimmable buck driver U5, a first end of the sixth resistor R01, a first end of the seventh resistor R02, a first end of the eighth resistor R03 and a first end of the ninth resistor R04, the current detection input terminal ISN of the dimmable buck driver U5, a second end of the sixth resistor R01, a second end of the seventh resistor R02, a second end of the eighth resistor R03, a second end of the ninth resistor R04 and a first end of the fourth capacitor C01 are connected to a fourth end of the first common mode inductor LF1, and a second end of the first inductor L3 is connected to a second end of the fourth capacitor C01 and a first end of the first common mode inductor LF 1.
The cathode of the third diode D3 is the first dc input terminal of the brightness adjusting circuit 103.
The current sense input ISN of the dimmable buck driver U5 is the power adjust signal input of the brightness adjustment circuit 103.
The second terminal of the first common-mode inductor LF1 and the third terminal of the first common-mode inductor LF1 jointly form a first driving voltage output terminal of the brightness adjusting circuit 103 and an emergency power supply voltage input terminal of the brightness adjusting circuit 103.
In specific implementation, the brightness control circuit 102 includes a single chip microcomputer U4 and a linear optocoupler U2. Optionally, the model of the singlechip U4 is OB3636, and the linear optocoupler U2 adopts EL 817C. The brightness control circuit 102 generates a brightness adjustment control signal EN according to the brightness adjustment signal, the first direct current V +, the second direct current 12V, and a third direct current VCC, wherein the third direct current is generated by voltage conversion of the second direct current 12V.
The power regulating assembly 105 includes a second gate switch K2, a ninth capacitor C9, a nineteenth resistor R19, and a twentieth resistor R20. The maximum power of the illumination of the LED module can be set by the power conditioning component 105.
The working principle of the LED emergency power driving circuit with adjustable color temperature will be briefly described with reference to fig. 5 as follows:
when the input alternating current (commercial power) is normally supplied, the switching power supply circuit 101 generates a first direct current V + and a second direct current 12V from the input alternating current. A user correspondingly generates a brightness adjusting signal through the dimming operation of the dimmer of the dimming component 104, the brightness adjusting signal generates a brightness adjusting control signal EN through the brightness control circuit 102, and the brightness adjusting circuit 103 is controlled to adjust the first direct current generated by the switching power supply circuit 101 according to the brightness adjusting control signal EN so as to obtain a first driving voltage, and the first driving voltage is output to the positive voltage input end LED + of the color temperature adjusting circuit 13 and the negative voltage input end LED of the color temperature adjusting circuit 13 through the positive voltage output end LED + (i.e. the third end of the first common mode inductor LF 1) of the brightness adjusting circuit 103 and the negative voltage output end LED of the switching power supply circuit 101 (i.e. the second end of the first common mode inductor LF 1); a user adjusts the color temperature shift through the first gating switch K1, for example, the normally closed end 3 of the first gating switch K1 is communicated with the second normally open end 4 of the first gating switch K1, so as to control the conduction of the first field effect transistor Q1, and the LED module 01 is adjusted to be illuminated with the first color temperature through the first field effect transistor Q1 of the color temperature adjusting circuit 13; the normally closed end 3 of the first gating switch K1 is communicated with the third normally open end 5 of the first gating switch K1, the conduction of the second field effect transistor Q2 is controlled, and the LED module 01 is adjusted to be illuminated with the second color temperature through the second field effect transistor Q2 of the color temperature adjusting circuit 13; the normally closed end 3 of the first gating switch K1 is communicated with the first normally open end 1 of the first gating switch K1, the first field effect tube Q1 and the second field effect tube Q2 are controlled to be conducted, the first field effect tube Q1 and the second field effect tube Q2 of the color temperature adjusting circuit 13 are used for adjusting the LED module 01 to be the third color temperature illumination, the illumination brightness adjustment can be carried out on the illumination LED module 01 when the mains supply is normally supplied, and the illumination color temperature adjustment can be realized on the LED module 01. The resistor R19 and the resistor R20 are gated by the second gate switch K2 of the power adjusting module 105, and the first driving voltage output by the brightness adjusting circuit 103 is adjusted by matching with the sixth resistor R01, the seventh resistor R02, the eighth resistor R03 and the ninth resistor R04 of the brightness adjusting circuit 103.
When the input alternating current (commercial power) can not supply power normally, the alternating current-direct current conversion circuit 10 can not output a first driving voltage to supply power to the LED module 01, an external emergency power supply is connected to the emergency power supply interface 11, the anode of the emergency power supply interface 11 and the cathode of the emergency power supply interface 11 are respectively connected with the positive voltage output end LED + of the brightness adjusting circuit 103 and the negative voltage output end LED-of the brightness adjusting circuit 103, therefore, the anode of the emergency power supply interface 11 and the cathode of the emergency power supply interface 11 are respectively connected with the positive voltage input end LED + of the color temperature adjusting circuit 13 and the negative voltage input end LED-of the color temperature adjusting circuit 13, and emergency illumination is carried out on the LED module 01; meanwhile, the user adjusts the color temperature gear through the first gating switch K1, and the color temperature adjusting circuit 13 is matched to adjust the color temperature of the LED module under emergency lighting.
The utility model provides a second aspect provides a LED lamps and lanterns, LED lamps and lanterns include the aforesaid LED emergency power supply drive circuit of adjustable colour temperature.
The embodiment of the utility model provides a can realize that the colour temperature at the in-process LED module that utilizes emergency power source to carry out emergency lighting is adjustable to satisfy different chromatic light application demands, circuit structure is simple, and is with low costs, and the practicality is strong. Meanwhile, under the condition that the mains supply is normally supplied for illumination, the illumination brightness adjustment and the illumination color temperature adjustment of the LED module can be realized, and different illumination application requirements are further fully met.
Various embodiments are described herein for various devices, circuits, and apparatuses. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.
Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation.
Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An LED emergency power supply driving circuit with adjustable color temperature, comprising:
an ac-dc conversion circuit configured to convert an input ac power into a first driving voltage;
the emergency power supply interface is connected with the alternating current-direct current conversion circuit and is configured to be connected with an emergency power supply voltage;
the color temperature control assembly is connected with the alternating current-direct current conversion circuit and the emergency power supply interface and is configured to generate a color temperature adjusting signal according to user input;
and the color temperature adjusting circuit is connected with the color temperature control assembly and the LED module and is configured to adjust the illumination color temperature of the LED module according to the color temperature adjusting signal and the emergency power supply voltage or adjust the illumination color temperature of the LED module according to the color temperature adjusting signal and the first driving voltage.
2. The LED emergency power driving circuit with adjustable color temperature of claim 1, wherein the AC/DC converting circuit comprises:
a switching power supply circuit configured to generate a first direct current and a second direct current from the input alternating current;
the brightness control circuit is connected with the switching power supply circuit and is configured to generate a brightness adjusting control signal according to the first direct current, the second direct current and a brightness adjusting signal;
and the brightness adjusting circuit is connected with the brightness control circuit and the switching power supply circuit and is configured to generate the first driving voltage according to the first direct current and the brightness adjusting control signal.
3. The color temperature adjustable LED emergency power supply driving circuit according to claim 2, wherein the AC/DC converting circuit further comprises:
and the dimming component is connected with the brightness control circuit and is configured to generate the brightness adjusting signal according to user input.
4. The tunable color temperature LED emergency power driving circuit of claim 2, further comprising:
the power adjusting component is connected with the brightness adjusting circuit and is configured to generate a power adjusting signal according to user operation;
the brightness adjustment circuit is specifically configured to generate the first driving voltage according to the brightness adjustment control signal, the power adjustment signal, and the first direct current.
5. The LED emergency power driving circuit with adjustable color temperature of claim 1, wherein the color temperature control component comprises but is not limited to one of a shift switch, a dial switch, a push button switch and a push button switch.
6. The adjustable color temperature LED emergency power driving circuit of claim 1, wherein the color temperature control assembly comprises: the first gating switch, the first diode and the second diode;
a first normally-open end of the first gate switch is connected to an anode of the first diode and an anode of the second diode;
the normally closed end of the first gating switch is a positive voltage input end of the color temperature control assembly, the cathode of the first diode and the cathode of the second diode are jointly formed into a first sub color temperature adjusting signal output end of the color temperature control assembly, the second normally open end of the first gating switch is a second sub color temperature adjusting signal output end of the color temperature control assembly, and the third normally open end of the first gating switch is a third sub color temperature adjusting signal output end of the color temperature control assembly;
and the first sub color temperature adjusting signal output end of the color temperature control assembly, the second sub color temperature adjusting signal output end of the color temperature control assembly and the third sub color temperature adjusting signal output end of the color temperature control assembly form a color temperature adjusting signal output end of the color temperature control assembly together.
7. The color temperature tunable LED emergency power supply driving circuit according to claim 1, wherein the color temperature tuning circuit comprises: the circuit comprises a first field effect transistor, a second field effect transistor, a first resistor and a second resistor;
the source electrode of the first field effect transistor is connected with the first end of the first resistor, the source electrode of the second field effect transistor and the first end of the second resistor, the grid electrode of the first field effect transistor is connected with the second end of the first resistor, and the grid electrode of the second field effect transistor is connected with the second end of the second resistor;
the source electrode of the first field effect transistor, the first end of the first resistor, the source electrode of the second field effect transistor and the first end of the second resistor are jointly formed into a negative voltage input end of the color temperature adjusting circuit;
the grid electrode of the first field effect transistor is a first sub color temperature adjusting signal input end of the color temperature adjusting circuit;
the grid electrode of the second field effect transistor is a second sub color temperature adjusting signal input end of the color temperature adjusting circuit;
the grid electrode of the first field effect transistor and the grid electrode of the second field effect transistor are jointly formed into a third sub color temperature adjusting signal input end of the color temperature adjusting circuit;
the first sub color temperature adjusting signal input end of the color temperature adjusting circuit, the second sub color temperature adjusting signal input end of the color temperature adjusting circuit and the third sub color temperature adjusting signal input end of the color temperature adjusting circuit are jointly formed into the color temperature adjusting signal input end of the color temperature adjusting circuit.
8. The LED emergency power supply driving circuit with adjustable color temperature of claim 2, wherein the brightness adjustment control circuit comprises a single chip microcomputer.
9. The color temperature tunable LED emergency power supply driving circuit according to claim 2, wherein the brightness adjusting circuit comprises: the adjustable buck voltage circuit comprises an adjustable buck driver, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a third field effect transistor, a third diode, a first inductor and a first common-mode inductor;
the dimming control input end of the dimmable buck driver is the brightness adjustment control signal input end of the brightness adjustment circuit;
the compensation node end of the adjustable optical buck driver is connected with the first end of the third capacitor, the second end of the third capacitor is connected with a power ground, the field effect tube current detection input end of the adjustable optical buck driver is connected with the first end of the fourth resistor, the gate driver end of the adjustable optical buck driver is connected with the first end of the third resistor, the adjusting output end of the adjustable optical buck driver is connected with the first end of the first capacitor, the ground end of the adjustable optical buck driver and the second end of the first capacitor are connected with the power ground, the second end of the third resistor is connected with the gate of the third field effect tube, the second end of the fourth resistor is connected with the source electrode of the third field effect tube, the second end of the second capacitor and the first end of the fifth resistor, and the second end of the fifth resistor is connected with the power ground, a drain electrode of the third field effect transistor, a first end of the second capacitor, and a first end of the first inductor are connected to an anode of the third diode, a cathode of the third diode is connected to a power supply terminal of the dimmable buck driver, a first end of the sixth resistor, a first end of the seventh resistor, a first end of the eighth resistor, and a first end of the ninth resistor, a current detection input terminal of the dimmable buck driver, a second end of the sixth resistor, a second end of the seventh resistor, a second end of the eighth resistor, a second end of the ninth resistor, and a first end of the fourth capacitor are connected to a fourth end of the first common mode inductor, and a second end of the first inductor is connected to a second end of the fourth capacitor and a first end of the first common mode inductor;
the cathode of the third diode is a first direct current input end of the brightness adjusting circuit;
the current detection input end of the adjustable light step-down driver is the power adjustment signal input end of the brightness adjustment circuit;
the second end of the first common-mode inductor and the third end of the first common-mode inductor jointly form a first driving voltage output end of the brightness adjusting circuit and an emergency power supply voltage input end of the brightness adjusting circuit.
10. LED lamp, characterized in that it comprises a dimmable LED emergency power supply driver circuit according to any of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922163469.8U CN211509347U (en) | 2019-12-04 | 2019-12-04 | Color temperature adjustable LED emergency power supply driving circuit and LED lamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922163469.8U CN211509347U (en) | 2019-12-04 | 2019-12-04 | Color temperature adjustable LED emergency power supply driving circuit and LED lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022082890A1 (en) * | 2020-10-22 | 2022-04-28 | 深圳市豪恩智能物联股份有限公司 | Alternating-current and direct-current switching lighting drive circuit and lamp |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022082890A1 (en) * | 2020-10-22 | 2022-04-28 | 深圳市豪恩智能物联股份有限公司 | Alternating-current and direct-current switching lighting drive circuit and lamp |
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Effective date of registration: 20210408 Address after: 516000 Dayawan West District, Huizhou City, Guangdong Province Patentee after: Huizhou haoen intelligent Internet of things Co.,Ltd. Address before: 518000 Dalang Street Tongsheng Community, Longhua District, Shenzhen City, Guangdong Province, and Hao En Science and Technology Group Co., Ltd., Full Third Function Zone Factory No. 2 Floor A, C, B, Central and South Sections Patentee before: LONGHORN LIGHTING Co.,Ltd. |