CN210328071U - LED eye-protecting lamp circuit - Google Patents
LED eye-protecting lamp circuit Download PDFInfo
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- CN210328071U CN210328071U CN201921302178.6U CN201921302178U CN210328071U CN 210328071 U CN210328071 U CN 210328071U CN 201921302178 U CN201921302178 U CN 201921302178U CN 210328071 U CN210328071 U CN 210328071U
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- circuit
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- charging capacitor
- led lamp
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model discloses a LED eye-protecting lamp circuit, which comprises a power circuit, wherein the power circuit is connected with a conversion circuit through an RC delay circuit, and the conversion circuit is connected with a first LED lamp group; the RC time delay circuit comprises a current limiting resistor R1, a charging capacitor C4 and a voltage follower U1; the first end of the current-limiting resistor R1 is connected with the positive electrode of the power supply circuit, the second end of the current-limiting resistor R1 is connected with the positive electrode of the charging capacitor C4, the negative electrode of the charging capacitor C4 is connected with the negative electrode of the power supply circuit, the common end of the current-limiting resistor R1 and the charging capacitor C4 is further connected with the input end of the voltage follower U1, the output end of the voltage follower U1 is connected with one end of the conversion circuit, the other end of the conversion circuit is connected with the positive electrode of the first LED lamp group, and the negative electrode of the first LED lamp group is connected with the negative electrode. The utility model discloses when the circular telegram, its LED banks lights gradually along with time, is favorable to protecting people's eyes, and the circuit is simple.
Description
Technical Field
The utility model relates to a LED eye-protecting lamp technical field especially relates to a LED eye-protecting lamp circuit.
Background
In the LED lamp circuit in the prior art, all LED lamp beads are immediately lightened after being electrified.
For people in dark, for example, when the eyes wake up in the middle of night, if the LED lamp beads are all lighted immediately, the eyes of the people are severely stimulated, the eyes of the people are slightly weakened, the people cannot see clearly, the eyes cannot be opened, and if the brightness of the LED lamp beads is too bright, the eyes can even be blinded.
The prior art has the defect that an LED eye protection lamp circuit is lacked, when the LED eye protection lamp circuit is powered on, an LED lamp bead is not lightened all at once, but is gradually lightened along with time, the eyes of people are protected, and the eyes are prevented from being hurt by suddenly lightening the lamp in the dark.
SUMMERY OF THE UTILITY MODEL
In view of at least one defect of the prior art, the present invention is directed to an LED eye-protecting lamp circuit, wherein when the circuit is powered on, the LED lamp set is gradually turned on along with time, which is beneficial to protecting eyes of people and has a simple circuit.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an LED eye-protecting lamp circuit comprises a power circuit, and is characterized in that the power circuit is connected with a conversion circuit through an RC delay circuit, and the conversion circuit is connected with a first LED lamp group; the RC time delay circuit comprises a current limiting resistor R1, a charging capacitor C4 and a voltage follower U1; the first end of the current-limiting resistor R1 is connected with the positive electrode of the power supply circuit, the second end of the current-limiting resistor R1 is connected with the positive electrode of the charging capacitor C4, the negative electrode of the charging capacitor C4 is connected with the negative electrode of the power supply circuit, the common end of the current-limiting resistor R1 and the charging capacitor C4 is further connected with the input end of the voltage follower U1, the output end of the voltage follower U1 is connected with one end of the conversion circuit, the other end of the conversion circuit is connected with the positive electrode of the first LED lamp group, and the negative electrode of the first LED lamp group is connected with the negative electrode.
Through the circuit structure arrangement, the power circuit charges the charging capacitor C4 through the current-limiting resistor R1, the voltages at two ends of the charging capacitor C4 gradually rise along with time, the voltage at the output end of the voltage follower U1 also gradually rises along with the voltages at two ends of the charging capacitor C4, the conversion circuit converts the voltage signals into current signals, the current of the first LED lamp bank is gradually increased along with the increase of the voltage at the output end of the voltage follower U1, and the first LED lamp bank is gradually lightened.
The delay time of the RC delay circuit depends on the resistance value of the current-limiting resistor R1 and the capacitance value of the charging capacitor C4, and the larger the resistance value of the current-limiting resistor R1 and the capacitance value of the charging capacitor C4 are, and the longer the charging time is, the longer the delay time is.
The first end of the current limiting resistor R1 is also connected with the negative electrode of the charging capacitor C4 through a release resistor R2.
Because there is no resistance in some power circuits, when the power circuit is powered off, the charging capacitor C4 discharges only through the voltage follower U1 formed by the integrated operational amplifier, the discharging speed is extremely slow, and because the input current of the voltage follower U1 is close to 0, the discharging may be as long as several hours, therefore, the release resistor R2 is provided, when the power circuit is powered off, the electric energy of the charging capacitor C4 can be released quickly through the release resistor R2.
The switching circuit is a switching resistor R3.
The conversion circuit formed by the conversion resistor R3 is simple in structure, and along with the increase of the voltage of the output end of the voltage follower U1, the current flowing through the conversion resistor R3 is gradually increased, so that the voltage signal is converted into a current signal to supply power to the first LED lamp group, and the current of the first LED lamp group is gradually increased.
The positive pole of the power supply circuit is also connected with one end of the conversion circuit through a change-over switch SB 1.
For some customers needing to light the first LED lamp group immediately, the power circuit immediately supplies power to the conversion circuit and the first LED lamp group through the switch SB1 only by pressing the switch SB1, and the first LED lamp group immediately lights.
The positive pole of the power supply circuit is also connected with one end of a conversion resistor R4, the other end of the conversion resistor R4 is connected with the positive pole of the second LED lamp group, the negative pole of the second LED lamp group is connected with the negative pole of the power supply circuit, and the number of the lamp beads of the second LED lamp group is one fourth to one third of the number of the lamp beads of the first LED lamp group.
Through the circuit structure, the second LED lamp group is immediately lightened when the power circuit is electrified, but the number of the lamp beads of the second LED lamp group is one fourth to one third of that of the first LED lamp group; the power of the LED lamp is one fourth to one third of that of the first LED lamp group.
Through foretell structure setting, the second LED banks can provide a less strong light when power supply circuit circular telegram, conveniently sees clearly the thing, but does not excessively stimulate people's eyes again.
The utility model provides a LED eye-protecting lamp circuit, when circular telegram, its LED banks lights gradually along with time, is favorable to protecting people's eyes, and the circuit is simple.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a circuit diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, an LED eye-protecting lamp circuit includes a power circuit 1, the power circuit 1 is connected to a conversion circuit 3 through an RC delay circuit 2, and the conversion circuit 3 is connected to a first LED lamp group 4; the RC delay circuit 2 comprises a current-limiting resistor R1, a charging capacitor C4 and a voltage follower U1; the first end of the current-limiting resistor R1 is connected with the anode of the power supply circuit 1, the second end of the current-limiting resistor R1 is connected with the anode of the charging capacitor C4, the cathode of the charging capacitor C4 is connected with the cathode of the power supply circuit 1, the common end of the current-limiting resistor R1 and the charging capacitor C4 is further connected with the input end of a voltage follower U1, the output end of the voltage follower U1 is connected with one end of the conversion circuit 3, the other end of the conversion circuit 3 is connected with the anode of the first LED lamp group 4, and the cathode of the first LED lamp group 4 is connected with the cathode of the power supply circuit 1.
Through the circuit structure arrangement, the power supply circuit 1 charges the charging capacitor C4 through the current-limiting resistor R1, the voltages of two ends of the charging capacitor C4 gradually rise along with time, the voltage of the output end of the voltage follower U1 also gradually rises along with the voltages of two ends of the charging capacitor C4, the converting circuit 3 converts the voltage signal into a current signal, the current of the first LED lamp group 4 is gradually increased along with the increase of the voltage of the output end of the voltage follower U1, and the first LED lamp group 4 is gradually lightened.
The delay time of the RC delay circuit 2 depends on the resistance of the current limiting resistor R1 and the capacitance of the charging capacitor C4, and the larger the resistance of the current limiting resistor R1 and the capacitance of the charging capacitor C4 are, and the longer the charging time is, the longer the delay time is.
Preferably, the delay time of the RC delay circuit 2 is set to 20 seconds to 120 seconds.
The first end of the current limiting resistor R1 is also connected with the negative electrode of the charging capacitor C4 through a release resistor R2.
The conversion circuit 3 is a conversion resistor R3.
The conversion circuit 3 formed by the conversion resistor R3 has a simple structure, and as the voltage at the output end of the voltage follower U1 increases, the current flowing through the conversion resistor R3 gradually increases, so as to convert the voltage signal into a current signal, and supply power to the first LED lamp group 4, so that the current of the first LED lamp group gradually increases.
The positive electrode of the power supply circuit 1 is also connected to one end of the switching circuit 3 via a switch SB 1.
The positive pole of the power supply circuit 1 is also connected with one end of a conversion resistor R4, the other end of the conversion resistor R4 is connected with the positive pole of the second LED lamp group 5, the negative pole of the second LED lamp group 5 is connected with the negative pole of the power supply circuit 1, and the number of the lamp beads of the second LED lamp group 5 is one fourth to one third of the number of the lamp beads of the first LED lamp group 4.
Through the circuit structure arrangement, the second LED lamp group 5 is immediately lighted when the power circuit 1 is electrified, but the number of the lamp beads of the second LED lamp group 5 is one fourth to one third of that of the first LED lamp group 4; the power of which is also one quarter to one third of the power of the first LED lamp set 4.
Through the structure, the second LED lamp group 5 can provide weak light when the power circuit 1 is electrified, so that people can see clearly, but eyes of people are not excessively stimulated.
Preferably, the second LED lamp set 5 is set to yellow, and the yellow light is soft, so that people can see clearly without excessively stimulating eyes. The first LED lamp group 4 is set to be white, the white lighting effect is good, the first LED lamp group is gradually lightened, and the lighting effect is increased.
Preferably, the output end of the voltage follower U1 is connected to the negative electrode of the power circuit 1 through a conversion resistor R3, and the conversion resistor R3 is connected to the first LED lamp group 4 through a current amplifying circuit; the conversion resistor R3 only converts the voltage signal into a current signal, and the current signal is amplified by the current amplifying circuit to supply power to the first LED lamp group 4, so that the first LED lamp group 4 with high power can be conveniently driven; the figure is omitted.
Finally, it is noted that: the above list is only the concrete implementation example of the present invention, and of course those skilled in the art can make modifications and variations to the present invention, and if these modifications and variations fall within the scope of the claims of the present invention and their equivalent technology, they should be considered as the protection scope of the present invention.
Claims (5)
1. An LED eye-protection lamp circuit comprises a power circuit (1), and is characterized in that the power circuit (1) is connected with a conversion circuit (3) through an RC delay circuit (2), and the conversion circuit (3) is connected with a first LED lamp group (4); the RC time delay circuit (2) comprises a current limiting resistor R1, a charging capacitor C4 and a voltage follower U1; the first end of the current-limiting resistor R1 is connected with the anode of the power supply circuit (1), the second end of the current-limiting resistor R1 is connected with the anode of the charging capacitor C4, the cathode of the charging capacitor C4 is connected with the cathode of the power supply circuit (1), the common end of the current-limiting resistor R1 and the charging capacitor C4 is further connected with the input end of the voltage follower U1, the output end of the voltage follower U1 is connected with one end of the conversion circuit (3), the other end of the conversion circuit (3) is connected with the anode of the first LED lamp group (4), and the cathode of the first LED lamp group (4) is connected with the cathode of the power supply circuit (1).
2. The LED eye-protecting lamp circuit according to claim 1, characterized in that: the first end of the current limiting resistor R1 is also connected with the negative electrode of the charging capacitor C4 through a release resistor R2.
3. The LED eye-protecting lamp circuit according to claim 2, characterized in that: the conversion circuit (3) is a conversion resistor R3.
4. The LED eye-protecting lamp circuit according to claim 1, characterized in that: the positive pole of the power supply circuit (1) is also connected with one end of the conversion circuit (3) through a change-over switch SB 1.
5. The LED eye-protecting lamp circuit according to claim 1, characterized in that: the positive pole of power supply circuit (1) still connects the one end of converting resistor R4, and the other end of converting resistor R4 connects the positive pole of second LED banks (5), and the negative pole of second LED banks (5) is connected with the negative pole of power supply circuit (1), and the lamp pearl quantity of second LED banks (5) is the quarter to the third of the lamp pearl quantity of first LED banks (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921302178.6U CN210328071U (en) | 2019-08-12 | 2019-08-12 | LED eye-protecting lamp circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921302178.6U CN210328071U (en) | 2019-08-12 | 2019-08-12 | LED eye-protecting lamp circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210328071U true CN210328071U (en) | 2020-04-14 |
Family
ID=70129479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921302178.6U Active CN210328071U (en) | 2019-08-12 | 2019-08-12 | LED eye-protecting lamp circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210328071U (en) |
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2019
- 2019-08-12 CN CN201921302178.6U patent/CN210328071U/en active Active
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