CN211959620U - LED lamp capable of adjusting various color temperatures - Google Patents
LED lamp capable of adjusting various color temperatures Download PDFInfo
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- CN211959620U CN211959620U CN202020608002.XU CN202020608002U CN211959620U CN 211959620 U CN211959620 U CN 211959620U CN 202020608002 U CN202020608002 U CN 202020608002U CN 211959620 U CN211959620 U CN 211959620U
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Abstract
The utility model relates to a LED lamp of adjustable multiple colour temperature, including two sets of LED lamp pearls and the drive circuit that has different colour temperatures, drive circuit includes the MOS pipe that concatenates with two sets of LED lamp pearls respectively and has two signal output part's colour temperature regulating module, two complementary PWM signals of signal output part output duty cycle are used for controlling the break-make of two MOS pipes respectively, with the electric current size of adjusting the LED lamp pearl of flowing through, colour temperature regulating module has at least three signal input part, every signal input part receives two kinds of signals of low level and high level, the PWM signal of corresponding duty cycle is exported according to signal input part's input signal combination mode to colour temperature regulating module. This application just can realize presenting multiple colour temperature through two sets of LED lamp pearls that the colour temperature is different to practice thrift the cost.
Description
Technical Field
The utility model relates to a LED lamp especially relates to a LED lamp of adjustable multiple colour temperature.
Background
In the prior art, the change of three color temperatures is generally realized by two lamp beads with different color temperatures. For example, the color temperature of a bead of a street lamp A is 3000K, the color temperature of a bead of a street lamp B is 5000K, and if A, B paths have the same power and are controlled to be simultaneously lightened by a switch, the mixed color temperature of the two paths of beads is close to 4000K. Like this can only realize three kinds of colour temperature changes through two way lamp pearls, and can not realize multiple, if need realize multiple then need the not identical lamp pearl of multichannel colour temperature, improved the cost like this.
SUMMERY OF THE UTILITY MODEL
Therefore, the LED lamp capable of adjusting various color temperatures is provided by aiming at the problems.
The utility model provides a LED lamp of adjustable multiple colour temperature, includes two sets of LED lamp pearls and the drive circuit that has different colour temperatures, drive circuit is including the MOS pipe that concatenates respectively with two sets of LED lamp pearls and the colour temperature regulating module who has two signal output part, two complementary PWM signals of signal output part output duty cycle are used for controlling the break-make of two MOS pipes respectively to the electric current size of adjusting the LED lamp pearl of flowing through, colour temperature regulating module has at least three signal input part, and every signal input part receives two kinds of signals of low level and high level, the PWM signal of corresponding duty cycle is exported according to signal input part's input signal combination mode to colour temperature regulating module.
Preferably, the at least three signal input terminals are coupled to a multi-bit toggle switch, and the number of bits of the toggle switch is equal to the number of the signal input terminals.
Preferably, the at least three signal input terminals are coupled to a multi-gear mechanical switch, and the number of gears of the mechanical switch is the same as the number of the signal input terminals.
Preferably, the driving circuit includes a rectifying module, a filtering module and a constant current module which are coupled in sequence.
Preferably, the color temperature adjusting module has a power supply terminal, and the driving circuit includes a voltage stabilizing module coupled to the power supply terminal.
Preferably, the driving circuit includes a rectifying module, a filtering module and a constant current module which are coupled in sequence, and the voltage stabilizing module is coupled between the constant current module and the power supply terminal.
Preferably, the voltage stabilizing module is coupled to each signal input terminal through a resistor, and each signal input terminal is grounded through the switch component.
Preferably, the voltage stabilizing module comprises a triode, and the base of the triode is grounded; the emitter of the triode is connected to the power supply end of the color temperature adjusting module; and a voltage stabilizing diode is also connected in series between the base electrode and the emitting electrode of the triode.
Preferably, the regulator module further includes an anti-reverse diode coupled to the collector of the transistor.
Preferably, the gate of each MOS transistor is coupled to the signal output end of the color temperature adjustment module;
the drain electrode of each MOS tube is respectively coupled to a corresponding group of LED lamp beads;
and the source electrode of each MOS tube is grounded.
According to the LED lamp capable of adjusting various color temperatures, the high level or the low level is respectively input through the at least three signal input ends, and the duty ratios of the two MOS tubes are correspondingly controlled according to different signal combination modes so as to throttle the current flowing through the LED lamp beads, so that the two LED lamp beads can present different color temperatures.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an LED lamp according to the present application;
FIG. 2 is a schematic diagram of an embodiment of an LED lamp according to the present application;
FIG. 3 is a circuit diagram of the LED lamp according to the present application from the rectifying module to the voltage stabilizing module;
FIG. 4 is a circuit diagram of a voltage regulator module of the LED lamp of the present application;
FIG. 5 is a circuit diagram of a color temperature adjusting module in an LED lamp according to the present application.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, the application provides an LED lamp capable of adjusting multiple color temperatures, including two sets of LED lamp beads and a driving circuit with different color temperatures, the driving circuit includes MOS tubes respectively connected in series with the two sets of LED lamp beads and a color temperature adjusting module with two signal output ends, the PWM signals with complementary duty ratios output by the two signal output ends are respectively used for controlling the on-off of the two MOS tubes, so as to adjust the current flowing through the LED lamp beads, the color temperature adjusting module has at least three signal input ends, each signal input end receives two signals of a low level and a high level, and the color temperature adjusting module outputs the PWM signals with corresponding duty ratios according to the input signal combination mode of the signal input ends.
In this embodiment, the color temperature adjusting module receives different combination mode high-low level input signals according to at least three signal input ends, correspondingly adjusts the duty ratio of the PWM signals of the two signal output ends to respectively control the on-off duty ratios of the two MOS transistors, and finally adjusts the current flowing through the two sets of LED lamp beads, so that the LED lamp presents different color temperatures.
For example, the two groups of LED lamp beads are LED1 and LED2, respectively, the color temperatures thereof are 3000K and 5000K, respectively, and are connected to the signal output port of the color temperature and color modulation module through MOS tube Q1 and MOS tube Q2, respectively. When the duty ratio D1 of the MOS transistor Q1 is increased, the duty ratio D2 of the MOS transistor Q2 is decreased, the corresponding LED1 is lightened, and the LED2 is darkened, so that the overall color temperature of the LED lamp is biased to the LED1, that is, 3000K.
When D1 is 100%, and Q1 is switched on, D2 is 0, and Q2 is switched off, so that the color temperature of the LED lamp integrally presents 3000K; on the contrary, when the Q1 is turned off and the Q2 is turned on, the color temperature of the LED lamp is 5000K as a whole.
When the D1 is 50%, the D2 is 50%, and the color temperature of the LED lamp is 4000K as a whole. When the D1 is 25 percent and the D2 is 75 percent, the color temperature of the LED lamp is 3000K to 4000K, which is close to 3500K.
In other embodiments, the two groups of LED lamp beads can use any two LED lamp beads with different color temperatures according to the requirement of color temperature span adjustment, and the adjustment of the integral color temperature of the LED lamp can be realized by respectively adjusting the on-off duty ratios of the MOS tubes.
In this embodiment, each signal input end of the color temperature adjusting module is connected in series with an independently controllable switch component, and the switch components are opened or closed to send high-level signals or low-level signals. The input signals have multiple combinations, for example, the color temperature adjusting module has three signal input ends, and is set to send a low level signal, namely '0', when the switch component is opened and send a high level signal, namely '1', when the switch component is closed. Such three signal inputs may transmit at least 8 different input signal combinations "000", "001", or "011", etc. For example, when the color temperature adjusting module receives a "010" input signal combination, the PWM signal at the signal output end is correspondingly adjusted to make D1 and D2 50%, so that the color temperature of the LED lamp is 4000K as a whole; when the color temperature adjusting module receives the combination of the '001' input signals, the PWM signals at the output ends of the corresponding adjusting signals enable D1 and D2 to be 25% and 75% respectively, the color temperature of the corresponding LED lamp is 3500K in whole, and the like.
In one embodiment, at least three signal inputs are coupled to a multi-bit toggle switch, and the number of bits of the toggle switch is equal to the number of the signal inputs. For example, the color temperature adjusting module is provided with three signal input ends, and is coupled with the three-position dial switch.
In one embodiment, at least three signal input terminals are coupled to a multi-stage mechanical switch, and the number of stages of the mechanical switch is equal to the number of signal input terminals.
Referring to fig. 2, the driving circuit includes a rectifying module, a filtering module, and a constant current module, which are coupled in sequence. The drive circuit is connected with alternating current, then carries out rectification and filtering through the rectification module and the filtering module, converts the alternating current into direct current, then supplies power to the color temperature adjusting module and the LED lamp through the constant current module, and supplies power to the LED through the constant current module, so that the characteristic that the brightness of the LED is influenced by current is met. As far as the constant current module itself is concerned, conventional techniques can be employed.
Referring to fig. 3, the driving circuit has two input terminals respectively connected to the positive and negative terminals of the ac power supply, wherein the input terminal connected to the negative terminal of the ac power supply is further connected in series with a fuse F1, two parallel and reverse diodes RV1 for stabilizing voltage are further connected between the two input terminals, and the two input terminals are further connected to the rectifier module through an inductor LF1 for anti-interference.
In one embodiment, the rectifier module employs a bridge stack DB1 and a capacitor CX1, and is connected to the filter module after rectification.
In one embodiment, the filtering module includes a resistor R1, an inductor L1, a capacitor C2, and a capacitor C3, and is connected to the constant current module after filtering.
In one embodiment, the constant current module is controlled by a single chip microcomputer U1(SY58978U) to output constant current to supply power. The constant current module is provided with two output ends, one output end is connected to the anode of the LED lamp bead to supply power, and the other output end is LED out by the energy storage inductor T1 and supplies power to the color temperature adjusting module through the voltage stabilizing module.
In this embodiment, the color temperature adjusting module has a power supply terminal, and the driving circuit includes a voltage stabilizing module coupled to the power supply terminal. The voltage stabilizing module provides corresponding voltage according to the requirement of the color temperature adjusting module.
In one embodiment, the driving circuit includes a rectifying module, a filtering module and a constant current module, which are coupled in sequence, and the voltage stabilizing module is coupled between the constant current module and the power supply terminal.
In one embodiment, the voltage stabilizing module is coupled to each signal input terminal through a resistor, and each signal input terminal is grounded through the switch component. When the switch assembly is closed, the signal input end is connected with the voltage stabilizing module to receive the high level signal.
Referring to fig. 4, the voltage regulation module includes a transistor Q6, and the base of the transistor Q6 is grounded; an emitter of the triode Q6 is connected to a power supply end of the color temperature adjusting module; a voltage stabilizing diode D3 is also connected in series between the base electrode and the emitting electrode of the triode Q6.
A stable voltage can be obtained by using the Zener diode D3, a voltage of 5V6 can be obtained at the base electrode if the Zener diode is 5V6, the Zener diode D3 is connected between the base electrode and the emitter electrode of the triode Q6 and is output by the emitter electrode, and a simple triode emitter electrode follower is formed, namely, the emitter electrode voltage follows the base electrode voltage, namely, the voltage of 5V 6. In which a difference, i.e. V, is generatedbeIs approximately 0.6V to 0.7V, so that a voltage of 5V is finally obtained at the emitter. According to the principle of the follower, the voltage stabilizing module can generate a supply voltage for driving the color temperature adjusting module to work.
In one embodiment, the regulator module further includes a resistor R10 connected between the collector of the transistor Q6 and the cathode of the zener diode D3 for supplying the operating current to the zener diode D3.
In one embodiment, the regulator module further includes a reverse-blocking diode D2 coupled to the collector of the transistor Q6.
In this embodiment, the gate of each MOS transistor is coupled to the signal output terminal of the color temperature adjustment module; the drain electrode of each MOS tube is respectively coupled to the corresponding group of LED lamp beads; the source electrode of each MOS tube is grounded.
Referring to fig. 5, the color temperature adjusting module may use a single chip microcomputer U2(XY152), and a pin 1 of the single chip microcomputer U2 is connected to an emitter of a transistor Q6 as a power supply terminal to obtain a driving voltage. The pins 2 to 4 of the single chip microcomputer U2 are signal input ports, and are respectively grounded through a switch component to receive input signals. The pin 6 and the pin 7 of the single chip microcomputer U2 are signal output ports and are respectively connected to the gates of the MOS tube Q1 and the MOS tube Q2 through the resistor R13 and the resistor R14 correspondingly so as to send PWM signals.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. LED lamp of adjustable multiple colour temperature, including two sets of LED lamp pearls and the drive circuit that has different colour temperatures, drive circuit is including the MOS pipe that concatenates with two sets of LED lamp pearls respectively and the colour temperature regulating module who has two signal output part, two complementary PWM signals of signal output part output duty cycle are used for controlling the break-make of two MOS pipes respectively to the electric current size of adjusting the LED lamp pearl of flowing through, its characterized in that, colour temperature regulating module has at least three signal input part, and every signal input part receives two kinds of signals of low level and high level, the PWM signal of corresponding duty cycle is exported according to signal input part's input signal combination mode to colour temperature regulating module.
2. The LED lamp of claim 1, wherein the at least three signal inputs are coupled to a multi-bit toggle actuator, the number of bits of the toggle actuator corresponding to the number of signal inputs.
3. The LED lamp of claim 1, wherein the at least three signal inputs are coupled to a multi-position mechanical switch, and the number of positions of the mechanical switch is equal to the number of signal inputs.
4. The LED lamp of claim 1, wherein the driving circuit comprises a rectifying module, a filtering module and a constant current module coupled in sequence.
5. The LED lamp of claim 1, wherein the color temperature adjustment module has a power supply terminal, and the driving circuit comprises a voltage regulator module coupled to the power supply terminal.
6. The LED lamp of claim 5, wherein the driving circuit comprises a rectifying module, a filtering module and a constant current module coupled in sequence, and the voltage stabilizing module is coupled between the constant current module and the power supply terminal.
7. The LED lamp of claim 5, wherein the voltage regulator module is coupled to each signal input terminal through a resistor, and each signal input terminal is connected to ground through a switch assembly.
8. The LED lamp of any of claims 5-7, wherein the voltage regulator module comprises a transistor, the base of the transistor is grounded; the emitter of the triode is connected to the power supply end of the color temperature adjusting module; and a voltage stabilizing diode is also connected in series between the base electrode and the emitting electrode of the triode.
9. The LED lamp of claim 8, wherein the regulator module further comprises an anti-reverse diode coupled to the collector of the transistor.
10. The LED lamp of claim 1, wherein the gate of each MOS transistor is coupled to the signal output terminal of the color temperature adjusting module;
the drain electrode of each MOS tube is respectively coupled to a corresponding group of LED lamp beads;
and the source electrode of each MOS tube is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020608002.XU CN211959620U (en) | 2020-04-21 | 2020-04-21 | LED lamp capable of adjusting various color temperatures |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020608002.XU CN211959620U (en) | 2020-04-21 | 2020-04-21 | LED lamp capable of adjusting various color temperatures |
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| CN211959620U true CN211959620U (en) | 2020-11-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024169670A1 (en) * | 2023-02-14 | 2024-08-22 | 嘉兴山蒲照明电器有限公司 | Color temperature adjustment apparatus, and power source apparatus and led lamp using same |
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- 2020-04-21 CN CN202020608002.XU patent/CN211959620U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024169670A1 (en) * | 2023-02-14 | 2024-08-22 | 嘉兴山蒲照明电器有限公司 | Color temperature adjustment apparatus, and power source apparatus and led lamp using same |
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