CN210069564U - Touch LED table lamp with internal power supply - Google Patents
Touch LED table lamp with internal power supply Download PDFInfo
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- CN210069564U CN210069564U CN201920564705.4U CN201920564705U CN210069564U CN 210069564 U CN210069564 U CN 210069564U CN 201920564705 U CN201920564705 U CN 201920564705U CN 210069564 U CN210069564 U CN 210069564U
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Abstract
The utility model discloses a touch LED table lamp of interior power supply, include: lamp stand, integral type lamp holder, the integral type lamp holder includes: first connecting rod, second connecting rod and articulated part, the head end and the lamp stand of first connecting rod are connected, and the tail end of first connecting rod is connected with the head end of second connecting rod through articulated part, is equipped with load LED in the second connecting rod, and the lamp stand includes: upper cover, lower cover, middle restriction portion and plug, middle restriction portion and lower cover threaded connection, upper cover and lower cover upper and lower cover close, with middle restriction portion parcel, install the indoor touch dimmer circuit board that installs of installation, the wire of plug through sink the position breach, along the wire casing with touch dimmer circuit board be connected, the plug is used for giving touch dimmer circuit board with the commercial power. The middle limiting part is arranged on the lamp holder, and the touch dimming circuit board is installed in the installation chamber, so that an external power adapter is not needed, and the reliability of power supply is improved. The desk lamp is used for the field of desk lamps.
Description
Technical Field
The utility model relates to a desk lamp technical field, in particular to touch LED desk lamp of interior power supply.
Background
The conventional LED table lamp is generally powered by an external power adapter, and mains supply is converted into current capable of driving the LED table lamp through the power adapter by connecting the power adapter to the outside of the LED table lamp, so that the LED table lamp is powered. However, there are many unreasonable places to this kind of scheme, for example, external power adapter easily loses, and external power adapter has increased the volume of an accessory for it is inconvenient on the transportation package of whole LED table lamp. Especially, if some LED table lamps with touch function still use the external power adapter, the power supply reliability of the whole touch chip is reduced due to the fact that the distance between the power supply end and the touch control chip is prolonged. The effectiveness of the touch may also be affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a touch LED table lamp of interior power supply.
The utility model provides a solution of its technical problem is: an internally powered touch LED table lamp comprising: lamp stand, integral type lamp holder, the integral type lamp holder includes: first connecting rod, second connecting rod and articulated part, the head end and the lamp stand of first connecting rod are connected, the tail end of first connecting rod is connected with the head end of second connecting rod through articulated part, be equipped with load LED in the second connecting rod, the lamp stand includes: upper cover, lower cover, middle restriction portion and plug, middle restriction portion and lower cover threaded connection, the upper cover closes with lower cover upper and lower cover, with middle restriction portion parcel, middle restriction portion is equipped with installation room and the breach of sinking, the metallic channel has between breach of sinking and the installation room, install touch dimming circuit board in the installation room, the wire of plug through the breach of sinking, along the metallic channel with touch dimming circuit board be connected, the plug is used for giving touch dimming circuit board with the commercial power, touch dimming circuit board includes: a substrate having welded thereon: the LED lighting device comprises a rectification filter circuit, a touch circuit, a driving circuit and a voltage reduction circuit, wherein the rectification filter circuit is used for converting commercial power into direct current, the voltage reduction circuit is used for converting the direct current into 3.3V voltage, the touch circuit is connected with a copper foil, the copper foil is adhered to the lower side wall of an upper cover, the touch circuit is used for generating PWM waves according to touch signals of the copper foil, and the driving circuit adjusts the light emitting brightness of a load LED according to the PWM waves.
Further, the hinge member includes: left side connecting portion, right connecting portion and connecting piece, left side connecting portion are equipped with concave position, are equipped with at the middle part of concave position and run through the first screwed pipe of connecting piece, the inside second screwed pipe that is equipped with of tail end of first connecting rod, left side connecting portion are equipped with first bolt portion, first bolt portion inserts inside the tail end of first connecting rod, first screwed pipe and second screwed pipe pass through first screwed connection, right side connecting portion be equipped with the protruding position of concave position looks adaptation, protruding position inserts in the concave position, protruding position and concave position all are equipped with the perforation, the connecting piece passes it is connected concave position and protruding position to perforate, right side connecting portion still are equipped with second bolt portion, second bolt portion inserts inside the head end of second connecting rod, the inside joint of second bolt portion and the head end of second connecting rod. Further, the upper part of the second threaded pipe is provided with a notch.
Furthermore, the surface of the first plug pin part is provided with a convex strip.
Furthermore, the surface of the second plug pin part is provided with a tie bar.
Further, the driving circuit includes: MT7816 chip and MT7816 chip peripheral circuit, the touch circuit includes: the circuit comprises a TTP258 chip, a resistor R11 and a capacitor C2, wherein a first input end of the TTP258 chip is connected with the right end of a resistor R11, the left end of the resistor R11 is connected with a copper foil through a first lead, a power supply end of the TTP258 chip is connected with 3.3V voltage, a grounding end of the TTP258 chip is connected with a negative output end of a rectifying and filtering circuit, a capacitor end of the TTP258 chip is connected with a negative output end of the rectifying and filtering circuit through a capacitor C2, and a first output end of the TTP258 chip is connected with a dimming end of an MT7816 chip.
Furthermore, the length of the first conducting wire is less than or equal to 50mm, and the diameter of the first conducting wire is less than or equal to 2 mm.
Further, the first output terminal of the TTP258 chip is connected to the dimming terminal of the MT7816 chip through a level stabilizing circuit, where the level stabilizing circuit includes: the left end of the resistor R10 is connected with the first output end of the TTP258 chip and the upper end of the resistor R5, the right end of the resistor R10 is connected with the dimming end of the MT7816 chip and the upper end of the capacitor C2, and the lower end of the resistor R5 and the lower end of the capacitor C2 are connected with the negative output end of the rectification filter circuit.
Further, the MT7816 chip peripheral circuit includes: the current detection end of the MT7816 chip is respectively connected with the upper end of the resistor R6 and the upper end of the resistor R7, the open circuit end of the MT7816 chip is connected with the upper end of the resistor R4, the power supply end of the MT7816 chip is respectively connected with the lower end of the resistor R3 and the upper end of the capacitor C1, the upper end of the resistor R1 is connected with the lower end of the resistor R1, and the upper end of the resistor R1 and the upper end of the diode D1 are connected with the negative electrode of the diode D3645, the electrolytic capacitor EC3, the capacitor C1, the inductor L2 and the diode D2 The anode of the electrolytic capacitor EC3, the upper end of the resistor R8 and the anode output end of the rectifying and filtering circuit are all connected with the anode of the load LED.
Further, the step-down circuit includes: the voltage regulator comprises a KP3310 chip, an electrolytic capacitor EC6 and an electrolytic capacitor EC7, wherein the drain end of the KP3310 chip is connected with the first output end of a rectifier bridge, the output end of the KP3310 chip generates 3.3V voltage, the output end of the KP3310 chip is connected with the anode of an electrolytic capacitor EC7, the power supply end of the KP3310 chip is connected with the anode of an electrolytic capacitor EC6, and the cathode of the electrolytic capacitor EC6, the cathode of the electrolytic capacitor EC7 and the grounding end of the KP3310 chip are connected with the second output end of the rectifier bridge.
The utility model has the advantages that: by providing the intermediate restriction portion at the lamp socket and installing the touch dimming circuit board in the installation chamber, since the touch dimming circuit board is provided with: rectifier filter circuit, touch circuit, drive circuit and step-down circuit for touch dimming circuit board can be directly connect the commercial power from the plug, and drive load LED, need not to improve the reliability of power supply through outside power adapter again.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
FIG. 1 is a schematic diagram of the overall structure of an LED table lamp;
FIG. 2 is an exploded view of the base;
FIG. 3 is an exploded view of the hinge assembly;
FIG. 4 is a schematic view of the interior of the trailing end of the first link;
FIG. 5 is a block diagram of the circuit connections of the dimming circuit;
fig. 6 is a circuit connection schematic diagram of the dimming circuit.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
Embodiment 1, referring to fig. 1, 2, 3, 4, 5 and 6, an internally powered touch LED table lamp comprising: lamp stand 100, integral type lamp holder, the integral type lamp holder includes: a first connecting rod 210, a second connecting rod 220 and a hinge member 300, wherein the head end of the first connecting rod 210 is connected to the lamp holder 100, the tail end of the first connecting rod 210 is connected to the head end of the second connecting rod 220 through the hinge member 300, a load LED is arranged in the second connecting rod 220, and the lamp holder 100 comprises: upper cover 110, lower cover 120, middle restriction portion 130 and plug (not shown), middle restriction portion 130 and lower cover 120 threaded connection, upper cover 110 closes with lower cover 120 upper and lower lid, with middle restriction portion 130 parcel, middle restriction portion 130 is equipped with installation room 131 and falls into position breach 132, it has wire casing 133 to fall into between position breach 132 and the installation room 131, install touch dimming circuit board in the installation room 131, the wire of plug is through falling into position breach 132, along wire casing 133 with touch dimming circuit board connection, the plug is used for conveying the commercial power to touch dimming circuit board, touch dimming circuit board includes: a substrate having welded thereon: the LED lighting circuit comprises a rectifying and filtering circuit 820, a touch circuit 850, a driving circuit 830 and a voltage reduction circuit 840, wherein the rectifying and filtering circuit 820 is used for converting commercial power into direct current, the voltage reduction circuit 840 is used for converting the direct current into 3.3V voltage, the touch circuit 850 is connected with a copper foil 851, the copper foil 851 is glued on the lower side wall of the upper cover 110, the touch circuit 850 is used for generating PWM waves according to touch signals of the copper foil 851, and the driving circuit 830 is used for adjusting the light emitting brightness of load LEDs according to the PWM waves.
By providing the intermediate restriction part 130 in the lamp socket 100 and installing the touch dimming circuit board in the installation chamber 131, since the touch dimming circuit board itself: rectifying and filtering circuit 820, touch circuit 850, drive circuit 830 and step-down circuit 840 for touch dimming circuit board can directly connect the commercial power from the plug to drive load LED, need not to pass through outside power adapter again, improves the reliability of power supply.
Referring to fig. 3 and 4, the hinge member 300 includes: a left connecting part 310, a right connecting part 320 and a connecting part 330, wherein the left connecting part 310 is provided with a concave part 311, a first threaded pipe penetrating the connection member 330 is provided in the middle of the recess 311, a second threaded pipe 211 is provided inside the rear end of the first link 210, the left connecting part 310 is provided with a first plug pin part 312, the first plug pin part 312 is inserted into the inside of the tail end of the first link 210, the first and second threaded pipes 211 are connected by a first screw 314, the right connecting portion 320 is provided with a convex portion 321 matched with the concave portion 311, the convex part 321 is inserted into the concave part 311, both the convex part 321 and the concave part 311 are provided with through holes, the connecting piece 330 passes through the through hole to connect the concave part 311 and the convex part 321, the right connecting part 320 is further provided with a second plug pin part 322, the second plug pin portion 322 is inserted into the head end of the second connecting rod 220, and the second plug pin portion 322 is clamped with the head end of the second connecting rod 220.
When the integrated lamp cap is mounted, the first plug pin portion 312 of the left connecting portion 310 is inserted into the rear end of the first link 210, and is screwed into the second threaded pipe 211 from the first threaded pipe by the first screw 314, so that the left connecting portion 310 is connected to the rear end of the first link 210. After the connection is completed, the whole first screw 314 is located inside the left connection portion 310 and the first link 210 and is hidden.
The right connecting portion 320 is inserted into the concave portion 311 of the left connecting portion 310 through the convex portion 321, and then the concave portion 311 and the convex portion 321 are connected through the connecting member 330, wherein the connecting member 330 includes a bolt and a nut, the bolt is inserted into the through holes of the concave portion 311 and the convex portion 321, and the nut is screwed with the exposed portion of the bolt to lock the concave portion 311 and the convex portion 321. The right connecting portion 320 is engaged with the inside of the head end of the second connecting rod 220 via a second plug pin portion 322.
The screws for installation are hidden through the hinged parts 300, so that the screws are prevented from being exposed in the installation process, and the attractiveness of the integrated lamp holder is improved.
Preferably, the upper portion of the second threaded pipe 211 is provided with a notch. By providing the notch at the upper portion of the second threaded pipe 211, the second threaded pipe 211 is more tensioned and prevented from being cracked when being locked with the first threaded pipe.
Preferably, a convex strip 313 is provided on the surface of the first plug pin portion 312. The friction between the surface of the first plug pin portion 312 and the inside of the trailing end of the first link 210 can be increased by the convex strip 313.
Preferably, the surface of the second plug pin portion 322 is provided with a tie bar. The friction between the surface of second plug pin portion 322 and the inside of the trailing end of second link 220 can be increased by the tie-bar.
With reference to fig. 5 and fig. 6, the driving circuit 830 includes: an MT7816 chip 831 and an MT7816 chip peripheral circuit 832, said touch circuit 850 comprising: the circuit comprises a TTP258 chip 852, a resistor R11 and a capacitor C2, wherein a first input end PC1 of the TTP258 chip 852 is connected with the right end of a resistor R11, the left end of the resistor R11 is connected with a copper foil 851 through a first lead, a power end VDD of the TTP258 chip 852 is connected with a 3.3V voltage, a grounding end GND of the TTP258 chip 852 is connected with a negative output end of a rectifying and filtering circuit 820, a capacitor end CAP of the TTP258 chip 852 is connected with a negative output end of the rectifying and filtering circuit 820 through a capacitor C2, and a first output end PA1 of the TTP258 chip 852 is connected with a dimming end DIM of an MT7816 chip 831. Preferably, the length of the first conducting wire is less than or equal to 50mm, and the diameter of the first conducting wire is less than or equal to 2 mm. By reducing the length and diameter of the first conductive line, the tamper resistance of the TTP258 chip 852520 when touched can be improved.
The TTP258 chip 852 is a single chip microcomputer with a touch function, so that when the desk lamp needs dimming, capacitance between the copper foil 851 and a human body is changed by touching the copper foil 851 to generate a trigger level, the trigger level is transmitted to the first input end PC1 of the TTP258 chip 852 through the resistor R11, the TTP258 chip 852 generates a PWM wave according to the trigger level, and the PWM wave acts on the dimming end DIM of the 781mt 6 chip 831, so that the driving circuit 830 changes the output current thereof, and dimming of a load LED is realized. The TTP258 chip 852 is adopted to serve as both the touch response chip and the PWM wave generator, so that the use of the elements of the whole touch dimming circuit board can be reduced, and the whole touch dimming circuit board is more miniaturized and is conveniently installed in the lamp holder 100. Meanwhile, the labor cost in the production process can be reduced, and the production is convenient.
Preferably, the first output PA1 of the TTP258 chip 852 is connected to the dimming terminal DIM of the MT7816 chip 831 through a level stabilizer circuit 860, and the level stabilizer circuit 860 includes: the left end of the resistor R10 is connected with the upper ends of the first output end PA1 and the resistor R5 of the TTP258 chip 852, the right end of the resistor R10 is connected with the upper ends of the dimming end DIM and the capacitor C2 of the MT7816 chip 831, and the lower end of the resistor R5 and the lower end of the capacitor C2 are connected with the negative output end of the rectifying and filtering circuit 820.
When the TTP258 chip 852 generates a PWM wave, the PWM wave generates an analog level at the dimming end DIM of the MT7816 chip 831 through the resistor R10 and the capacitor C2, the resistor R10 and the capacitor C2 form an RC low pass filter, and when the PWM wave has a low frequency component, the low pass filter filters a low frequency parameter of the PWM wave; meanwhile, the PWM wave can generate harmonic waves due to transmission reasons, the harmonic waves enable the analog level to have a tiny increment, at the moment, the resistor R5 is used as a pull-down resistor to shunt the capacitor C2, and when the PWM is at a low level, the capacitor C2 discharges the resistor R5 to quickly release the increment through the resistor R5. Stabilize the analog level generated by the PWM wave at the DIM terminal DIM of the MT7816 chip 831.
The MT7816 chip peripheral circuit 832 includes: a resistor R2, a resistor R3, a resistor R4, a resistor R6, a resistor R7, a resistor R8, an electrolytic capacitor EC3, a capacitor C1, a capacitor C3, an inductor L2 and a diode D2, wherein a ground terminal GND of the MT7816 chip 831 is connected with a negative output end of the rectifying and filtering circuit 820, a drain terminal DRN of the MT7816 chip 831 is connected with an anode of the diode D2 and a left end of the inductor L2 respectively, a right end of the inductor L2 is connected with a negative electrode of the electrolytic capacitor EC3, a lower end of the resistor R8, an upper end of the capacitor C3 and a negative electrode of the load LED respectively, a current detection terminal CS of the MT7816 chip 831 is connected with an upper end of the resistor R6 and an upper end of the resistor R7 respectively, an open-circuit terminal OVP of the MT7816 chip 831 is connected with an upper end of the resistor R4, a power terminal of the MT7816 chip 831 is connected with a lower end of the resistor R3 and an upper end of the resistor R1, an upper end of the resistor R3 and an upper, The cathode of the diode D2, the anode of the electrolytic capacitor EC3, the upper end of the resistor R8 and the anode output end of the rectifying and filtering circuit 820 are all connected with the anode of the load LED. The MT7816 chip peripheral circuit 832 is a typical peripheral circuit of the MT7816 chip 831. The MT7816 chip 831 and the MT7816 chip peripheral circuit 832 can generate an operating current of 0.35mA or more to drive the load LED.
The rectifying and filtering circuit 820 includes: a rectifier bridge 821 and a pi-type filter 822, the pi-type filter 822 comprising: the first input end of the rectifier bridge 821 is connected with a live wire of a plug, the second input end of the rectifier bridge 821 is connected with a zero wire of the plug, the first output end of the rectifier bridge 821 is respectively connected with the anode of the electrolytic capacitor EC1 and the left end of the inductor L1, the second output end of the rectifier bridge 821 is respectively connected with the cathode of the electrolytic capacitor EC1 and the cathode of the electrolytic capacitor EC2, and the right end of the inductor L1 is connected with the anode of the electrolytic capacitor EC 2.
The voltage-decreasing circuit 840 includes: KP3310 chip 841, electrolytic capacitor EC6 and electrolytic capacitor EC7, the Drain terminal Drain of KP3310 chip 841 is connected with the first output terminal of rectifier bridge 821, the output terminal OUT of KP3310 chip 841 produces 3.3V voltage, the output terminal OUT of KP3310 chip 841 is connected with the positive pole of electrolytic capacitor EC7, the power supply end VDD of KP3310 chip 841 is connected with the positive pole of electrolytic capacitor EC6, the negative pole of electrolytic capacitor EC6, the negative pole of electrolytic capacitor EC7, the grounding terminal GND of KP3310 chip 841 are all connected with the second output terminal of rectifier bridge 821. The voltage reduction circuit 840 adopts a KP3310 chip 841 as a core, and the voltage reduction scheme of the chip is more stable compared with resistance-capacitance voltage reduction. Compared with a DC-DC voltage reduction scheme, the touch dimming circuit board has the advantages that no inductor is needed, the use of elements is greatly reduced, and the size of the touch dimming circuit board is reduced.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and changes without departing from the spirit of the invention.
Claims (10)
1. An interior power supply's touch LED table lamp which characterized in that includes: lamp stand, integral type lamp holder, the integral type lamp holder includes: first connecting rod, second connecting rod and articulated part, the head end and the lamp stand of first connecting rod are connected, the tail end of first connecting rod is connected with the head end of second connecting rod through articulated part, be equipped with load LED in the second connecting rod, the lamp stand includes: upper cover, lower cover, middle restriction portion and plug, middle restriction portion and lower cover threaded connection, the upper cover closes with lower cover upper and lower cover, with middle restriction portion parcel, middle restriction portion is equipped with installation room and the breach of sinking, the metallic channel has between breach of sinking and the installation room, install touch dimming circuit board in the installation room, the wire of plug through the breach of sinking, along the metallic channel with touch dimming circuit board be connected, the plug is used for giving touch dimming circuit board with the commercial power, touch dimming circuit board includes: a substrate having welded thereon: the LED lighting device comprises a rectification filter circuit, a touch circuit, a driving circuit and a voltage reduction circuit, wherein the rectification filter circuit is used for converting commercial power into direct current, the voltage reduction circuit is used for converting the direct current into 3.3V voltage, the touch circuit is connected with a copper foil, the copper foil is adhered to the lower side wall of an upper cover, the touch circuit is used for generating PWM waves according to touch signals of the copper foil, and the driving circuit adjusts the light emitting brightness of a load LED according to the PWM waves.
2. The internally powered touch LED desk lamp of claim 1, wherein said hinged member comprises: left side connecting portion, right connecting portion and connecting piece, left side connecting portion are equipped with concave position, are equipped with at the middle part of concave position and run through the first screwed pipe of connecting piece, the inside second screwed pipe that is equipped with of tail end of first connecting rod, left side connecting portion are equipped with first bolt portion, first bolt portion inserts inside the tail end of first connecting rod, first screwed pipe and second screwed pipe pass through first screwed connection, right side connecting portion be equipped with the protruding position of concave position looks adaptation, protruding position inserts in the concave position, protruding position and concave position all are equipped with the perforation, the connecting piece passes it is connected concave position and protruding position to perforate, right side connecting portion still are equipped with second bolt portion, second bolt portion inserts inside the head end of second connecting rod, the inside joint of second bolt portion and the head end of second connecting rod.
3. The internally powered touch LED table lamp of claim 2, wherein the second threaded tube is provided with a notch at the upper part.
4. The internally powered touch LED table lamp of claim 2, wherein the surface of the first plug pin part is provided with a convex strip.
5. The internally powered touch LED table lamp of claim 2, wherein the surface of the second plug pin portion is provided with a tie bar.
6. The internally powered touch LED table lamp of claim 1, wherein the driving circuit comprises: MT7816 chip and MT7816 chip peripheral circuit, the touch circuit includes: the circuit comprises a TTP258 chip, a resistor R11 and a capacitor C2, wherein a first input end of the TTP258 chip is connected with the right end of a resistor R11, the left end of the resistor R11 is connected with a copper foil through a first lead, a power supply end of the TTP258 chip is connected with 3.3V voltage, a grounding end of the TTP258 chip is connected with a negative output end of a rectifying and filtering circuit, a capacitor end of the TTP258 chip is connected with a negative output end of the rectifying and filtering circuit through a capacitor C2, and a first output end of the TTP258 chip is connected with a dimming end of an MT7816 chip.
7. The internally powered touch LED table lamp of claim 6, wherein the length of the first conducting wire is less than or equal to 50mm, and the diameter of the first conducting wire is less than or equal to 2 mm.
8. The internally powered touch LED desk lamp of claim 6, wherein the first output terminal of the TTP258 chip is connected to the dimming terminal of the MT7816 chip through a level stabilizing circuit, the level stabilizing circuit comprising: the left end of the resistor R10 is connected with the first output end of the TTP258 chip and the upper end of the resistor R5, the right end of the resistor R10 is connected with the dimming end of the MT7816 chip and the upper end of the capacitor C2, and the lower end of the resistor R5 and the lower end of the capacitor C2 are connected with the negative output end of the rectification filter circuit.
9. The internally powered touch LED desk lamp of claim 8, wherein said MT7816 chip peripheral circuitry comprises: the current detection end of the MT7816 chip is respectively connected with the upper end of the resistor R6 and the upper end of the resistor R7, the open end of the MT7816 chip is connected with the upper end of the resistor R7, the positive end of the resistor R7 and the positive end of the diode D7, The upper end of the resistor R8 and the positive electrode output end of the rectifying and filtering circuit are both connected with the positive electrode of the load LED.
10. The internally powered touch LED table lamp of claim 1, wherein said voltage dropping circuit comprises: the voltage regulator comprises a KP3310 chip, an electrolytic capacitor EC6 and an electrolytic capacitor EC7, wherein the drain end of the KP3310 chip is connected with the first output end of a rectifier bridge, the output end of the KP3310 chip generates 3.3V voltage, the output end of the KP3310 chip is connected with the anode of an electrolytic capacitor EC7, the power supply end of the KP3310 chip is connected with the anode of an electrolytic capacitor EC6, and the cathode of the electrolytic capacitor EC6, the cathode of the electrolytic capacitor EC7 and the grounding end of the KP3310 chip are connected with the second output end of the rectifier bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920564705.4U CN210069564U (en) | 2019-04-23 | 2019-04-23 | Touch LED table lamp with internal power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920564705.4U CN210069564U (en) | 2019-04-23 | 2019-04-23 | Touch LED table lamp with internal power supply |
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| Publication Number | Publication Date |
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| CN210069564U true CN210069564U (en) | 2020-02-14 |
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| CN201920564705.4U Active CN210069564U (en) | 2019-04-23 | 2019-04-23 | Touch LED table lamp with internal power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531428A (en) * | 2021-07-30 | 2021-10-22 | 深圳市佑明光电有限公司 | LED table lamp with heat dissipation function and automatic illumination intensity adjustment function |
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2019
- 2019-04-23 CN CN201920564705.4U patent/CN210069564U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531428A (en) * | 2021-07-30 | 2021-10-22 | 深圳市佑明光电有限公司 | LED table lamp with heat dissipation function and automatic illumination intensity adjustment function |
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