CN215961240U - Hand-held type ultraviolet ray disinfection lamp - Google Patents
Hand-held type ultraviolet ray disinfection lamp Download PDFInfo
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- CN215961240U CN215961240U CN202121000332.1U CN202121000332U CN215961240U CN 215961240 U CN215961240 U CN 215961240U CN 202121000332 U CN202121000332 U CN 202121000332U CN 215961240 U CN215961240 U CN 215961240U
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- disinfection lamp
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Abstract
The utility model relates to a handheld ultraviolet disinfection lamp which comprises a strip-shaped shell, wherein one end of the shell is a holding end, and the other end of the shell is provided with a plurality of ultraviolet LEDs; a driving circuit is arranged in the shell and comprises a PWM signal source, a power circuit and a plurality of MOS tubes; the input end of the power circuit is externally connected with an alternating current power supply through a cable, and the output end of the power circuit outputs a proper direct current signal; the ultraviolet LED is arranged on the shell convenient to hold by utilizing the characteristics of small size and low excitation voltage of the ultraviolet LED, the ultraviolet intensity of the ultraviolet LED is adjusted through a PWM signal source, the ultraviolet LED is directly supplied with power by adopting alternating current, and a power circuit provides direct current suitable for the work of the ultraviolet LED after transforming, rectifying, filtering and stabilizing the alternating current power supply; the utility model has the characteristics of small volume, convenient use and convenient adjustment.
Description
Technical Field
The utility model relates to the field of disinfection lamps, in particular to a handheld ultraviolet disinfection lamp.
Background
Along with the improvement of living standard of people, the requirements on public and personal hygiene are higher and higher, especially, infectious diseases and viruses occur continuously in the world, so that people pay more attention to public and personal hygiene, and meanwhile, the awareness on personal hygiene is strengthened, and therefore, the demand desire on household disinfection and sterilization equipment is increased continuously.
Because ultraviolet rays have good disinfection and sterilization effects, ultraviolet lamp disinfection and sterilization equipment is accepted by the public. The existing ultraviolet disinfection and sterilization equipment has the defects of complex structure, large volume and inconvenient use, so the ultraviolet disinfection and sterilization equipment is difficult to popularize.
Disclosure of Invention
In view of the above, the present invention is directed to a hand-held ultraviolet disinfection lamp, which is small in size and convenient to use.
The utility model discloses a handheld ultraviolet disinfection lamp which comprises a strip-shaped shell, wherein one end of the shell is a holding end, and a plurality of ultraviolet LEDs are arranged at the other end of the shell;
a driving circuit is arranged in the shell and comprises a PWM signal source, a power circuit and a plurality of MOS tubes; the input end of the power circuit is externally connected with an alternating current power supply through a cable, and the output end of the power circuit outputs a direct current signal;
the grid electrode of the MOS tube is connected with a PWM signal source, the cathode of the multiple ultraviolet LEDs connected in parallel is connected with the drain electrode of the MOS tube, the anode of the multiple ultraviolet LEDs connected in series is connected with the output end of the power circuit, and the source electrode of the MOS tube is grounded;
and an adjusting switch is arranged in the PWM signal source and is arranged on the side surface of the shell opposite to the ultraviolet LED.
Furthermore, the PWM signal source is an STC12 single chip microcomputer, and a plurality of IO pins of the STC12 single chip microcomputer are connected with the output end of the power circuit after being connected with the regulating switch in series.
Furthermore, the power supply circuit comprises a transformer, a rectifier bridge, a filter capacitor and a three-terminal regulator, wherein a primary coil of the transformer is externally connected with an alternating current power supply, a secondary coil of the transformer is connected with an input end of the rectifier bridge, an output end of the rectifier bridge is connected with an input end of the three-terminal regulator, and the input end and the output end of the three-terminal regulator are both connected with a plurality of filter capacitors in parallel.
Furthermore, the other end of the shell is also provided with a plurality of purple LEDs, and the purple LEDs are consistent with the ultraviolet LEDs in connection structure.
Further, the output voltage of the three-terminal regulator is 5V, and at least 2 ultraviolet LEDs or purple LEDs are arranged on each MOS tube.
The utility model has the beneficial effects that: the handheld ultraviolet disinfection lamp provided by the utility model has the advantages that the ultraviolet LED is arranged on the shell convenient to hold by utilizing the characteristics of small size and low excitation voltage of the ultraviolet LED, the ultraviolet intensity of the ultraviolet LED is adjusted through the PWM signal source, the ultraviolet LED is directly supplied with alternating current, and the power circuit provides direct current suitable for the operation of the ultraviolet LED after transforming, rectifying, filtering and stabilizing the alternating current power supply; the utility model has the characteristics of small volume, convenient use and convenient adjustment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for a person skilled in the art, other relevant drawings can be obtained from the drawings without inventive effort:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a power supply circuit of the present invention;
fig. 3 is a schematic diagram of a driving circuit according to the present invention.
The reference numbers are as follows: 1-shell, 2-ultraviolet LED, 3-regulating switch and 11-holding end.
Detailed Description
As shown in fig. 1-3: the hand-held ultraviolet disinfection lamp of this embodiment, including bar-shaped casing 1, the one end of casing 1 is for holding end 11, and the other end of casing 1 is equipped with a plurality of ultraviolet LED 2.
The inside drive circuit that is equipped with of casing 1, drive circuit include PWM signal source, power supply circuit and a plurality of MOS pipe.
The input end of the power circuit is externally connected with an alternating current power supply through a cable, and the output end of the power circuit outputs a proper direct current signal.
The grid of MOS pipe is connected with the PWM signal source, and the negative pole that a plurality of ultraviolet LED2 connect in parallel is connected with the drain electrode of MOS pipe through the current-limiting resistance who establishes ties, and the positive pole that a plurality of ultraviolet LED2 establish ties after is connected with power supply circuit's output, and the source ground connection of MOS pipe is equipped with bleeder resistance between the source of MOS pipe and the grid simultaneously.
An adjusting switch 3 is arranged in the PWM signal source, and the adjusting switch 3 is arranged on the side face, opposite to the ultraviolet LED2, of the shell 1.
The hand-held ultraviolet disinfection lamp provided by the utility model has the advantages that the ultraviolet LED2 is small in size and low in excitation voltage, the ultraviolet LED2 is arranged on the shell 1 convenient to hold by hand, the ultraviolet intensity of the ultraviolet LED2 is adjusted through the PWM signal source, alternating current is directly adopted for power supply, and a power circuit provides direct current suitable for the operation of the ultraviolet LED2 after transforming, rectifying, filtering and stabilizing the alternating current power supply; the utility model has the characteristics of small volume, convenient use and convenient adjustment.
In the embodiment, the PWM signal source is an STC12 single chip microcomputer, a plurality of IO pins of the STC12 single chip microcomputer are connected with the output end of the power circuit after being connected in series with the regulating switch 3, the STC12 single chip microcomputer is also powered by the power circuit, and the power circuit outputs 5V direct current signals which are directly used for driving the ultraviolet LED2 while supplying power to the STC12 single chip microcomputer; one end of each of the adjusting switches 3 is connected with an IO port of the STC12 single chip microcomputer, the other end of each of the adjusting switches 3 is connected with an output end of the power circuit, the adjusting switches 3 adopt automatic bouncing type switches, and when the adjusting switches 3 are pressed down, the corresponding IO ports receive high levels and correspondingly adjust the duty ratio of output PWM signals; at the same time, there is also a regulating switch 3 which is switched on and off correspondingly.
In this embodiment, power supply circuit includes the transformer, the rectifier bridge, filter capacitor and three terminal regulator, the external alternating current power supply of primary coil of transformer, the secondary coil of transformer is connected with the input of rectifier bridge, the output of rectifier bridge is connected with three terminal regulator's input, three terminal regulator's input and output all connect in parallel and set up a plurality of filter capacitors, three terminal regulator adopts LM117, through predetermineeing the signal of telecommunication of output 5V, power supply circuit adopts the two-phase power supply of 220V alternating current power supply, through the vary voltage, the rectification, after filtering and steady voltage step-down, obtain the signal of telecommunication of 5V and supply power.
In this embodiment, the other end of the housing 1 is further provided with a plurality of purple LEDs, the purple LEDs are consistent with the ultraviolet LED2 in connection structure, and the ultraviolet LED2 is excited to generate ultraviolet rays, so that the ultraviolet LEDs are arranged to prompt the working state of the disinfection lamp.
In this embodiment, the output voltage of the three-terminal regulator is 5V, at least 2 ultraviolet LEDs 2 or purple LEDs are arranged on each MOS transistor, the working voltage of the purple LEDs is 3.0-3.4V, and the working voltage of the ultraviolet LEDs 2 is usually above 4V, so that a plurality of LEDs connected in parallel are connected in series with a current-limiting resistor on each LED, so that each LED can work normally, and meanwhile, a single MOS transistor can control a plurality of LEDs simultaneously.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. A hand-held ultraviolet disinfection lamp which is characterized in that: the LED lamp comprises a strip-shaped shell, wherein one end of the shell is a holding end, and a plurality of ultraviolet LEDs are arranged at the other end of the shell;
a driving circuit is arranged in the shell and comprises a PWM signal source, a power circuit and a plurality of MOS tubes;
the input end of the power circuit is externally connected with an alternating current power supply through a cable, and the output end of the power circuit outputs a direct current signal;
the grid electrode of the MOS tube is connected with a PWM signal source, the cathode of the multiple ultraviolet LEDs connected in parallel is connected with the drain electrode of the MOS tube, the anode of the multiple ultraviolet LEDs connected in series is connected with the output end of the power circuit, and the source electrode of the MOS tube is grounded;
and an adjusting switch is arranged in the PWM signal source and is arranged on the side surface of the shell opposite to the ultraviolet LED.
2. The hand-held ultraviolet disinfection lamp of claim 1, wherein: the PWM signal source is an STC12 single chip microcomputer, and a plurality of IO pins of the STC12 single chip microcomputer are connected with the output end of the power circuit after being connected with the regulating switch in series.
3. The hand-held ultraviolet disinfection lamp of claim 1, wherein: the power supply circuit comprises a transformer, a rectifier bridge, filter capacitors and a three-terminal voltage stabilizer, wherein a primary coil of the transformer is externally connected with an alternating current power supply, a secondary coil of the transformer is connected with the input end of the rectifier bridge, the output end of the rectifier bridge is connected with the input end of the three-terminal voltage stabilizer, and the input end and the output end of the three-terminal voltage stabilizer are both connected with a plurality of filter capacitors in parallel.
4. A hand-held ultraviolet disinfection lamp as claimed in claim 3, wherein: the other end of the shell is also provided with a plurality of purple LEDs, and the purple LEDs are consistent with the ultraviolet LEDs in connection structure.
5. The hand-held ultraviolet disinfection lamp of claim 4, wherein: the output voltage of the three-terminal voltage stabilizer is 5V, and at least 2 ultraviolet LEDs or purple LEDs are arranged on each MOS tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121000332.1U CN215961240U (en) | 2021-05-12 | 2021-05-12 | Hand-held type ultraviolet ray disinfection lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121000332.1U CN215961240U (en) | 2021-05-12 | 2021-05-12 | Hand-held type ultraviolet ray disinfection lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215961240U true CN215961240U (en) | 2022-03-08 |
Family
ID=80574069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121000332.1U Active CN215961240U (en) | 2021-05-12 | 2021-05-12 | Hand-held type ultraviolet ray disinfection lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215961240U (en) |
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2021
- 2021-05-12 CN CN202121000332.1U patent/CN215961240U/en active Active
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