CN110694089A

CN110694089A - Hand-held type UV sterilizing equipment

Info

Publication number: CN110694089A
Application number: CN201911138174.3A
Authority: CN
Inventors: 李晓惠
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-01-17

Abstract

The invention discloses a handheld UV (ultraviolet) sterilization device, which comprises a main body shell and a UV sterilization unit arranged on the main body shell, wherein a shell lower cavity of the main body shell is also provided with a ball assembly; the ball assembly is provided with a plurality of partially exposed balls which form a rolling moving structure and a supporting surface; the UV sterilization unit is arranged in the main body shell and arranged around the ball assembly, the light emitting surface of the UV sterilization unit faces downwards and can be directly emitted to an object to be sterilized, and the main body shell is further provided with a handheld part. The UV sterilization device is a handheld sterilization device, the lower bottom surface of the handheld sterilization device is provided with the ball assembly, the long handle is held by hands, the UV sterilization device is pushed to move through the long handle, the balls are attached to an article to move, light emitted by the UV LED lamp is sterilized along the surface of the article due to the rolling of the balls, the UV LED lamp is at a certain distance from the surface of the article, and light is better irradiated on the surface of the article through the light reflecting surface.

Description

Hand-held type UV sterilizing equipment

Technical Field

The invention relates to a disinfection device, in particular to a handheld UV sterilization device.

Background

Ultraviolet sterilization is a common sterilization mode at present, and the wavelength of ultraviolet most kills and destroys the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in bacteria and viruses, so that growing cells and/or regenerative cells are killed, and the sterilization and disinfection effects are achieved. Therefore, the ultraviolet sterilization is widely applied to operating rooms, sickrooms, sterile rooms and other areas, and household disinfection cabinets, sofas, office tables, dining tables and other products.

However, the existing ultraviolet sterilization device is generally large in size, although some sterilization devices for meeting personal sterilization requirements appear in the market, the existing ultraviolet sterilization device is generally connected with the mains supply, is inconvenient for individuals to carry and use, affects the use efficiency of users, and is very inconvenient to use especially in local cleaning and disinfection in outdoor activity rooms; moreover, the ultraviolet sterilization device has single function and can only be used as a container to sterilize and disinfect the contained fluid or objects; the surface of an object which is large in size and fixed cannot be sterilized and disinfected, and due to the particularity of the wavelength of the UVC, the distance from the light emitting surface of a UVC lamp bead to the surface to be sterilized and disinfected is required to be less than 30mm when the UVC lamp bead is used.

Because the sofa is bulky in addition like sofa, bed, tea table so some are bulky, and some of the uneven surface of waiting to disappear are not level, when using portable UV sterilizing equipment, the hand is held and is operated UV sterilizing equipment with handheld mode, it needs certain distance apart from the article to be difficult to control between UVC lamp pearl light emitting area and the surface of waiting to disappear within 30mm, if hold UV sterilizing equipment like keeping to disappear the distance for a long time depending on human muscle control's mode, will influence human muscle, the bone health can make the hand ache, can not operate lastingly.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a handheld UV sterilization device, and the research and development purposes of the UV sterilization device are to replace a human motion system in a control mode of a mechanical structure to control the distance from a light emitting surface of a UVC lamp bead to a surface to be sterilized, so that arm strength is saved, the health of a user is ensured, and the sterilization is more convenient.

In order to solve the technical problem, the invention is realized by the following scheme: a hand-held UV sterilization device comprises a main body shell and a UV sterilization unit arranged on the main body shell, wherein a lower cavity of a shell of the main body shell is also provided with a ball assembly;

the ball assembly is provided with a plurality of partially exposed balls which form a rolling moving structure and a supporting surface;

the UV sterilization unit is arranged in the main body shell and arranged around the ball assembly, the light emitting surface of the UV sterilization unit faces downwards and can be directly emitted to an object to be sterilized, and the main body shell is further provided with a handheld part.

Furthermore, the main body shell is a square body, the periphery of the main body shell is rounded, a raised boss is arranged on the shell surface of the main body shell, the periphery of the boss is an inclined plane, a round hole is formed in the middle of the upper end plane of the boss, a containing cavity is formed in the boss, and a handheld part is arranged at the round hole;

a right-angle groove is formed in one inclined plane, a mounting hole is formed in the side face of the right-angle groove, and a charging socket is formed in the mounting hole;

the edge of the opening of the accommodating cavity is provided with a circle of convex dam enclosing plate, an annular groove body is formed between the dam enclosing plate and the outer edge side plate of the main body shell, and a UV sterilization unit is arranged in the annular groove body.

Furthermore, the handheld part comprises a connecting column, the outer end of the connecting column is provided with a threaded hole, the inner end of the connecting column is provided with a lateral through hole, the connecting column is externally connected with a long handle through the threaded hole and is connected with a rotating head through a lateral through hole shaft, and the connecting column can rotate on the rotating head through a shaft;

the upper end face of a rotating head briquetting is arranged in to rotating head lower extreme, the rotating head briquetting is fixed the round hole internal orifice edge of main part shell, it will the rotating head top is tight on the part anchor ring that blocks of the round hole upper orifice portion of main part shell.

Furthermore, the UV sterilization unit comprises a PCB, an annular UV lamp panel and a rechargeable battery, wherein a charging circuit, a discharging circuit and a UV lamp panel driving circuit are arranged on the PCB, the rechargeable battery is electrically connected with the charging circuit and the discharging circuit, the charging circuit is electrically connected to a charging socket, and the discharging circuit is electrically connected with the UV lamp panel driving circuit;

positioning through holes are formed in four corners of the PCB and are fixed on the ball component through the positioning through holes;

the annular UV lamp panel is provided with UV LED lamps, the UV LED lamps are uniformly distributed along the annular lamp panel and are connected to the UV lamp panel driving circuit through a circuit;

the UV sterilization unit further comprises a reflector, the reflector is provided with a V-shaped groove surface, a UV LED lamp embedding hole is formed in the bottom of the V-shaped groove surface, the UV LED lamp is arranged in the embedding hole, the V-shaped groove surface of the reflector is arranged to be a reflecting surface, and the surface of an open end of the reflector is pressed and held by the top of the ball assembly.

Furthermore, the UV lamp panel driving circuit comprises a single chip microcomputer, wherein a pin 20 of the single chip microcomputer is connected with a charging circuit, the pin 20 of the single chip microcomputer is connected with a VDD interface, two capacitors and a voltage stabilizer Q3, the other ends of the two capacitors are grounded, and an IN end of a voltage stabilizer Q3 is connected with a charging BAT + pin;

a pin 1 of the single chip microcomputer is grounded;

the pin 5 of the singlechip is connected with a resistor R7, the other end of the resistor R7 is connected with a KEY pin of a boost converter U5,

the 19 pin, the 17 pin and the 16 pin of the single chip are respectively connected with the IRQ pin, the SCL pin and the SDA pin of the boost converter U5;

the pin 18 of the single chip microcomputer is respectively connected with a resistor R8, a resistor R1 and a capacitor C20, the other end of the capacitor C20 is connected with the other end of the resistor R1 and is grounded, the other end of the resistor R8 is connected with the VIN end of the boost converter U5, the capacitor C15, the capacitor C14 and the VBUS pin of the USB interface, and the other end of the capacitor C15 and the other end of the capacitor C14 are grounded;

a pin 15 of the single chip microcomputer is connected with a resistor R18, a resistor R19 and a capacitor C19, the other end of the capacitor C19 is connected with the other end of the resistor R19 and is grounded, the other end of the resistor R18 is connected with an inductor L2, a resistor R11, a capacitor C1 and a charge BAT + pin, the other end of the capacitor C1 is grounded, the other end of the inductor L2 is connected with a SW pin of the boost converter U5, the other end of the resistor R11 is connected with a BAT pin of the boost converter U5 and a capacitor C7, and the other end of the capacitor C7 is grounded;

the VOUT pin of the boost converter U5 is connected with a discharge circuit, the VOUT pin is connected with three capacitors and a switch key, the other ends of the three capacitors are connected with each other and grounded, the other interface of the switch key is connected with an inductor L1, the other end of the inductor L1 is connected with the anode of a diode D1 and the SW pin of a buck chip U1, the cathode of the diode D1 is connected with a capacitor C2, the VIN pin of the buck chip U1 and a UV LED lamp connected in series, the other end of the capacitor C2 is grounded and connected with a resistor R3, the other end of the resistor R3 is grounded and connected with a resistor R2, and the other end of the resistor R2 is connected with the CS pin of;

the VCC pin of the voltage reduction chip U1 is connected with a capacitor C3, the other end of the capacitor C3 is grounded and connected with a capacitor C4, the EP pin of the voltage reduction chip U1 and a resistor R4, the other end of the capacitor C4 is connected with the COMP pin of the voltage reduction chip U1, the other end of the resistor R4 is connected with the FB pin of the voltage reduction chip U1, and the FB pin is also connected with the cathode end of the UV LED lamp which is connected in series.

Furthermore, the ball assembly comprises a ball base plate, a plurality of balls, a ball pressure head matched with the balls and a face cover;

the ball mounting surface of the ball base plate is provided with a plurality of convex ball placing columns, the outer ends of the ball placing columns are provided with ball placing grooves, the ball placing grooves are provided with cambered surface reinforcing ribs, and the outer side walls of the ball placing columns are provided with convex guide ribs;

the ball pressure head is a through hole, a cavity at one end with larger diameter is a ball placing cavity, an annular blocking surface is arranged in the ball placing cavity, the opening part of the annular blocking surface is chamfered, and a slot matched with the guide rib is arranged on the wall surface of the ball pressure head;

the surface cover is connected with the lower cavity opening of the main body shell, a hole matched with the ball pressure head is formed in the surface cover, a blocking surface is arranged in the hole, the lower end of the ball pressure head is arranged on the blocking surface and internally provided with a ball, the ball pressure head is sleeved on the ball placing column, and part of the ball body of the ball is exposed out of the outer surface of the surface cover and can roll in a ball cavity formed by the ball pressure head and the ball placing column.

Furthermore, openings are formed in the periphery of the body of the face cover IV, and the open end of the reflector abuts against the openings;

the ball base plate up end is provided with bellied box dam circle, and face four corners in the box dam circle is provided with the reference column, and the location via hole cover on the PCB board is on this reference column.

Furthermore, the face lid below is covered with the dress trim cover, the middle part of dress trim cover is equipped with the regional hole of ball, is provided with UV LED lamp via hole around the regional hole of ball.

Furthermore, long handle is the telescopic link and is equipped with the drive-by-wire device in this telescopic link, and the drive-by-wire switch is equipped with drive-by-wire switch, and drive-by-wire switch installs on the handle, and the user singlehanded presses the circuit break-make of on-off control UVC lamp pearl when the operation.

Compared with the prior art, the invention has the beneficial effects that: the UV sterilization device is a handheld sterilization device, a ball assembly is arranged on the lower bottom surface of the handheld sterilization device, a long handle is held by a hand, the UV sterilization device is pushed to move through the long handle, the balls are attached to an article to move, light emitted by the UV LED lamp is disinfected along the surface of the article due to the rolling of the balls, the distance between the UV LED lamp and the surface of the article is constant, light is better irradiated onto the surface of the article through a light reflecting surface, and the UV sterilization device is provided with a child lock which needs to be opened and can be switched on only by continuously pressing a key at the position of the long handle.

The product has the main effects that: 1. use ball control UV LED light emitting area and article to treat the distance of the face of disinfecting, can directly place sterilizing equipment and promote on treating the face of disinfecting when using, can freely walk, need not people's control deliberately and treat the distance of the face of disinfecting to what adopt is spherical ball, to treating of various materials the face of disinfecting can all adapt to and can not harm the outward appearance of treating the face of disinfecting.

2. The telescopic rod is used, the space can be used at the position which is too low and too high, an operator can not adopt a very arduous posture, the operator can easily stand or sit, and the operation of sterilizing and disinfecting the environment can be carried out while playing the mobile phone.

3. The sterilization device is characterized in that a switch is left on the sterilization device main body, sterilization action cannot be carried out after the standby switch is turned on, the UV LED can be excited to sterilize only by pressing a button on a handle of a telescopic rod, a child lock function and a light induction function are added, the child lock function is that an unlocking switch is added to the main body, the sterilization action can be started only by unlocking first, the light induction function is that a light-emitting surface to be sterilized is lifted to be 30mm away from a surface to be sterilized, and then the UV LED light source module is automatically turned off, so that the safety of a user is.

4. Besides the UV-C lamp bead with the wavelength of 150 ~~ 300nm can effectively kill various bacteria, blue light with the wavelength of 400 ~~ 470nm is added for mildew prevention, and the on-off of the blue light can remind a user whether the lamp is in a starting use state.

Drawings

Fig. 1 is an exploded view of the hand-held UV sterilization device of the present invention.

Fig. 2 is a perspective view of the hand-held UV sterilization device of the present invention facing the hand-held portion.

FIG. 3 is a perspective view of the hand-held UV sterilization device of the present invention facing the light emitting surface.

Fig. 4 is a sectional view of the hand-held UV sterilization device of the present invention.

Fig. 5 is a schematic view of a cover surface structure of the main body housing according to the present invention.

FIG. 6 is a schematic view of the structure of the annular UV lamp panel of the invention.

FIG. 7 is a schematic view of a ball substrate according to the present invention.

FIG. 8 is a schematic view of the ball placement post of the present invention.

FIG. 9 is a schematic view of another structure of the ball substrate of the present invention.

Fig. 10 is a schematic view of the ball and ball indenter configuration of the ball assembly of the present invention.

FIG. 11 is a schematic view of the inner side of the ball assembly of the present invention.

Fig. 12 is a partial circuit 1 diagram of the UV lamp panel driving circuit of the present invention.

Fig. 13 is a partial circuit 2 diagram of the UV lamp panel driving circuit of the invention.

Fig. 14 is a partial circuit 3 diagram of the UV lamp panel driving circuit of the invention.

Fig. 15 is a partial circuit 4 diagram of the UV lamp panel driving circuit of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and thus the protection scope of the present invention is more clearly and clearly defined. It should be apparent that the described embodiments of the present invention are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1, the specific structure of the present invention is as follows:

referring to fig. 1-15, the present invention relates to a hand-held UV sterilization device, which comprises a main body housing 2 and a UV sterilization unit disposed on the main body housing 2, wherein a lower cavity of the main body housing 2 is further provided with a ball assembly;

the ball assembly is provided with a plurality of partially exposed balls 9, and the plurality of balls form a rolling moving structure and a supporting surface;

the UV sterilization unit is arranged in the main body shell 2 and arranged around the ball assembly, the light emitting surface of the UV sterilization unit faces downwards and can be directly emitted to an object to be sterilized, and a handheld part is further arranged on the main body shell 2.

A preferred technical solution of this embodiment: the main body shell 2 is a square body, the periphery of the main body shell is rounded, a raised boss is arranged on the shell surface of the main body shell 2, the periphery of the boss is an inclined plane, a round hole 21 is arranged in the middle of the upper end plane of the boss, a containing cavity 22 is formed in the boss, and a handheld part is arranged at the round hole 21;

a right-angle groove is formed in one inclined plane, a mounting hole is formed in the side face of the right-angle groove, and a charging socket 15 is formed in the mounting hole;

a circle of convex dam enclosing plates are arranged at the edge of the opening of the containing cavity 22, an annular groove body is formed between each dam enclosing plate and the outer edge side plate of the main body shell 2, and a UV sterilization unit is arranged in the annular groove body.

A preferred technical solution of this embodiment: the handheld part comprises a connecting column 1, the outer end of the connecting column 1 is provided with a threaded hole, the inner end of the connecting column 1 is provided with a lateral perforation, the connecting column 1 is externally connected with a long handle through the threaded hole and is connected with a rotating head 3 through a lateral perforation shaft, and the connecting column 1 can rotate on the rotating head 3 through a shaft;

the lower end of the rotating head 3 is arranged on the upper end face of a rotating head pressing block 4, the rotating head pressing block 4 is fixed on the edge of the inner opening of the round hole 21 of the main body shell 2, and the rotating head 3 is tightly pressed on the annular face of the blocking part of the upper opening of the round hole 2 of the main body shell 2.

A preferred technical solution of this embodiment: the UV sterilization unit comprises a PCB (printed circuit board) 5, an annular UV lamp panel 6 and a rechargeable battery 14, wherein a charging circuit, a discharging circuit and a UV lamp panel driving circuit are arranged on the PCB 5, the rechargeable battery 14 is electrically connected with the charging circuit and the discharging circuit, the charging circuit is electrically connected to a charging socket 15, and the discharging circuit is electrically connected with the UV lamp panel driving circuit;

positioning through holes are formed in four corners of the PCB 5 and are fixed on the ball assembly through the positioning through holes;

the annular UV lamp plate 6 is provided with UV LED lamps, the UV LED lamps are uniformly distributed along the annular lamp plate and are connected to the UV lamp plate driving circuit through a circuit;

the UV sterilization unit further comprises a reflector 7 and a reflector 13, the reflector 7 and the reflector 13 are provided with V-shaped groove surfaces, UV LED lamp embedding holes are formed in the bottoms of the V-shaped groove surfaces, the UV LED lamps are arranged in the embedding holes, the V-shaped groove surfaces of the reflector 7 and the reflector 13 are arranged to be light reflecting surfaces, and the surfaces of the open ends of the reflectors are pressed and held by the top of the ball assembly.

Referring to fig. 12-15, fig. 12 is a partial circuit 1 diagram of the UV lamp panel driving circuit of the present invention. Fig. 13 is a partial circuit 2 diagram of the UV lamp panel driving circuit of the invention. Fig. 14 is a partial circuit 3 diagram of the UV lamp panel driving circuit of the invention. Fig. 15 is a partial circuit 4 diagram of the UV lamp panel driving circuit of the invention. The drawings are connected alphabetically as shown in fig. 12 and 13, a-F, fig. 13, 13-15, and so on.

A preferred technical solution of this embodiment: the UV lamp panel driving circuit comprises a single chip microcomputer, wherein a pin 20 of the single chip microcomputer is connected with a charging circuit, the pin 20 of the single chip microcomputer is connected with a VDD interface, two capacitors and a voltage stabilizer Q3, the other ends of the two capacitors are grounded, and an IN end of a voltage stabilizer Q3 is connected with a charging BAT + pin;

a pin 1 of the single chip microcomputer is grounded;

A preferred technical solution of this embodiment: the ball assembly comprises a ball base plate 8, a plurality of balls 9, a ball pressure head 10 matched with the balls and a face cover 11;

the ball mounting surface 81 of the ball base plate 8 is provided with a plurality of convex ball placing columns 83, the outer ends of the ball placing columns 83 are provided with ball placing grooves, the ball placing grooves are provided with cambered surface reinforcing ribs, and the outer side walls of the ball placing columns 83 are provided with convex guide ribs 82;

the ball pressure head 10 is a through hole, a cavity at one end with a larger diameter is a ball placing cavity 101, an annular blocking surface is arranged in the ball placing cavity 101, the opening part of the annular blocking surface is chamfered, and the wall surface of the ball pressure head 10 is provided with a slot 102 matched with the guide rib 82;

the face cover 11 is covered and connected with the lower cavity opening of the main body shell 2, a hole matched with the ball pressure head 10 is formed in the face cover, a blocking face is arranged in the hole, the lower end of the ball pressure head 10 is arranged on the blocking face, balls 9 are arranged in the ball pressure head, the ball pressure head 10 is sleeved on the ball placing column 83, partial ball bodies of the balls 9 are exposed out of the outer surface of the face cover 11, and the ball pressure head 10 and the ball placing column 83 can roll in a ball cavity formed by the ball pressure head 10 and the ball placing column 83.

A preferred technical solution of this embodiment: openings are formed in the periphery of the face cover 11, and the open ends of the

light reflecting plates

7 and 13 abut against the openings;

the upper end face of the ball base plate 8 is provided with a raised dam ring 84, four corners of the surface in the dam ring 84 are provided with positioning columns 85, and positioning holes in the PCB 5 are sleeved on the positioning columns 85.

A preferred technical solution of this embodiment: the face lid 11 below is covered with dress trim cover 12, dress trim cover 12's middle part is equipped with the regional hole of ball, is provided with UV LED lamp via hole around the regional hole of ball.

A preferred technical solution of this embodiment: the long handle is a telescopic rod, the distance can be adjusted through the telescopic rod, articles with different heights can be sterilized after the distance is adjusted, actions such as bowing and bending are not needed, physical strength is saved, and waist soreness is avoided. The long handle is a telescopic rod, a wire control device is arranged in the telescopic rod, the wire control device is provided with a wire control switch, the wire control switch is installed on the handle, and a user presses the switch to control the on-off of a circuit of the UVC lamp bead by one hand during operation.

The UV sterilization device is a handheld sterilization device, a ball assembly is arranged on the lower bottom surface of the handheld sterilization device, a long handle is held by a hand, the UV sterilization device is pushed to move through the long handle, the balls are attached to an article to move, light emitted by a UV LED lamp is disinfected along the surface of the article due to the rolling of the balls, the UV LED lamp is at a certain distance from the surface of the article, light is better irradiated onto the surface of the article through a light reflecting surface, and the UV sterilization device is provided with a child lock which is required to be opened and can be switched on only by continuously pressing a key at the long handle.

3. Besides the UV-C lamp bead with the wavelength of 150 ~~ 300nm can effectively kill various bacteria, blue light with the wavelength of 400 ~~ 470nm is added for mildew prevention, and the on-off of the blue light can remind a user whether the lamp is in a starting use state.

Example 2:

as shown in fig. 15, a switch is left on the sterilization device body, and no sterilization action is performed after the standby switch is turned on, the UV LED can be excited to sterilize only by pressing a button on the handle of the telescopic rod, and a child lock and a light induction function are added, wherein the child lock function is that an unlocking switch is added to the sterilization device body, the sterilization action can be started only by unlocking the button, and the light induction function is that the UV LED light source module is automatically turned off when the light induction light emitting surface to be sterilized is lifted to be 30mm away from the surface to be sterilized, so that the safety of a user is ensured. The on-off switch sets up on long handle, switches on the UV LED lamp through pressing the on-off switch, will press continuously and just can switch on, loosens the circuit promptly after the hand.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a hand-held type UV sterilizing equipment, this UV sterilizing equipment include main body cover (2) and set up UV sterilization unit on main body cover (2), its characterized in that: the lower cavity of the shell of the main body shell (2) is also provided with a ball assembly;

the ball assembly is provided with a plurality of partially exposed balls (9) which form a rolling moving structure and a supporting surface;

the UV sterilization unit is arranged in the main body shell (2) and arranged around the ball assembly, the light emitting surface of the UV sterilization unit faces downwards and can be directly projected to the object to be sterilized, and a handheld part is further arranged on the main body shell (2).

2. The hand-held UV germicidal device as claimed in claim 1, wherein: the main body shell (2) is a square body, the periphery of the main body shell is rounded, a raised boss is arranged on the shell surface of the main body shell (2), the periphery of the boss is an inclined surface, a round hole (21) is formed in the middle of the upper end plane of the boss, a containing cavity (22) is formed in the boss, and a handheld part is arranged at the round hole (21);

a right-angle groove is formed in one inclined plane, a mounting hole is formed in the side face of the right-angle groove, and a charging socket (15) is arranged in the mounting hole;

the edge of the opening of the accommodating cavity (22) is provided with a circle of convex dam enclosing plate, an annular groove body is formed between the dam enclosing plate and the outer edge side plate of the main body shell (2), and a UV sterilization unit is arranged in the annular groove body.

3. The hand-held UV germicidal device as claimed in claim 1, wherein: the handheld part comprises a connecting column (1), the outer end of the connecting column (1) is provided with a threaded hole, the inner end of the connecting column is provided with a lateral perforation, the connecting column (1) is externally connected with a long handle through the threaded hole and is connected with a rotating head (3) through a lateral perforation shaft, and the connecting column (1) can rotate on the rotating head (3) through a shaft;

the upper end face of a rotating head briquetting (4) is arranged in to rotating head (3) lower extreme, rotating head briquetting (4) are fixed the round hole (21) internal orifice edge of main part shell (2), it will rotating head (3) top is tight on the part of the ring face that blocks of the round hole (2) upper orifice portion of main part shell (2).

4. The hand-held UV germicidal device as claimed in claim 1, wherein: the UV sterilization unit comprises a PCB (5), an annular UV lamp panel (6) and a rechargeable battery (14), wherein a charging circuit, a discharging circuit and a UV lamp panel driving circuit are arranged on the PCB (5), the rechargeable battery (14) is electrically connected with the charging circuit and the discharging circuit, the charging circuit is electrically connected to a charging socket (15), and the discharging circuit is electrically connected with the UV lamp panel driving circuit;

positioning through holes are formed in four corners of the PCB (5), and the PCB is fixed on the ball assembly through the positioning through holes;

UV LED lamps are arranged on the annular UV lamp plate (6), are uniformly distributed along the annular lamp plate and are connected to the UV lamp plate driving circuit through a circuit;

the UV sterilization unit further comprises a reflector (7, 13), the reflector (7, 13) is provided with a V-shaped groove surface, a UV LED lamp embedding hole is formed in the bottom of the V-shaped groove surface, the UV LED lamp is arranged in the embedding hole, the V-shaped groove surface of the reflector (7, 13) is arranged to be a reflecting surface, and the surface of an open end of the reflector is pressed and held by the top of the ball assembly.

5. The hand-held UV sterilization device according to claim 4, wherein: the UV lamp panel driving circuit comprises a single chip microcomputer, wherein a pin 20 of the single chip microcomputer is connected with a charging circuit, the pin 20 of the single chip microcomputer is connected with a VDD interface, two capacitors and a voltage stabilizer Q3, the other ends of the two capacitors are grounded, and an IN end of a voltage stabilizer Q3 is connected with a charging BAT + pin;

a pin 1 of the single chip microcomputer is grounded;

6. The hand-held UV germicidal device as claimed in claim 1, wherein: the ball assembly comprises a ball base plate (8), a plurality of balls (9), a ball pressure head (10) matched with the balls and a face cover (11);

a plurality of convex ball placing columns (83) are arranged on the ball mounting surface (81) of the ball base plate (8), ball placing grooves are formed in the outer ends of the ball placing columns (83), cambered surface reinforcing ribs are arranged in the ball placing grooves, and convex guide ribs (82) are arranged on the outer side walls of the ball placing columns (83);

the ball pressure head (10) is a through hole, a cavity at one end with a larger diameter is a ball placing cavity (101), an annular blocking surface is arranged in the ball placing cavity (101), the opening part of the annular blocking surface is chamfered, and a slot (102) matched with the guide rib (82) is arranged on the wall surface of the ball pressure head (10);

the face cover (11) is connected with the lower cavity opening of the main body shell (2) in a covering mode, a hole matched with the ball pressure head (10) is formed in the face cover, a blocking face is arranged in the hole, the lower end of the ball pressure head (10) is arranged on the blocking face, balls (9) are arranged in the ball pressure head, the ball pressure head (10) is connected to the ball placing column (83) in a sleeved mode, part of ball bodies of the balls (9) are exposed out of the outer surface of the face cover (11), and the ball pressure head can roll in a ball cavity formed by the ball pressure head (10) and the ball placing column (83).

7. The hand-held UV sterilization device according to claim 6, wherein: openings are formed in the periphery of the surface cover (11), and the open ends of the light reflecting plates (7, 13) are abutted to the openings;

the ball base plate (8) up end is provided with bellied box dam circle (84), and the face four corners in box dam circle (84) is provided with reference column (85), and the location via hole cover on PCB board (5) is on this reference column (85).

8. The hand-held UV sterilization device according to claim 6, wherein: the utility model discloses a LED lamp, including face lid (11), face lid (11) below is covered with dress trim cover (12), the middle part of dress trim cover (12) is equipped with the regional hole of ball, is provided with UV LED lamp via hole around the regional hole of ball.

9. The hand-held UV sterilization device according to claim 3, wherein: the long handle is a telescopic rod, a wire control device is arranged in the telescopic rod, the wire control device is provided with a wire control switch, the wire control switch is installed on the handle, and a user presses the switch to control the on-off of a circuit of the UVC lamp bead by one hand during operation.