A disinfection box

Abstract

The present invention provides a disinfection box, including an ultraviolet light source and a control circuit board for generating ultraviolet light, wherein the ultraviolet light source is a cold cathode ultraviolet lamp, and the control circuit board has a driving circuit of the ultraviolet lamp, wherein the driving circuit includes triode Q6, triode Q4, triode Q3, inductor L2, and transformer U3, and the main controller generates a light-on signal Light on and connects the base of triode Q6, the emitter of triode Q6 is grounded, and the collector is connected to the emitter of triode Q4 and triode Q3 respectively; the power supply ZWD_5V is connected to the base of triode Q3 and triode Q4 respectively after passing through resistor R8 and resistor R7 after passing through inductor L2, the base and collector of triode Q4, the power supply ZWD-5V after voltage L2, and the collector and base of triode Q3 are connected to five pins of the primary side of transformer U3 respectively, and two pins of the secondary side of transformer U3 output the high-voltage AC signal driving the ultraviolet lamp. In the present invention, triodes and transformers are used to drive mercury lamps, and the circuit volume is small and the power consumption is low.

Description

Technical Field

[0001] The invention relates to the field of disinfection boxes, in particular to a disinfection box which utilizes ultraviolet rays to disinfect items in the box. Background Art

[0002] Jewelry boxes, cosmetic boxes and other boxes are used to store jewelry, cosmetics or other personal items. Since these jewelry, cosmetics, etc. are often used, bacteria may grow in the boxes when they are not used temporarily, which has a bad impact on the health of the people who use these boxes. Therefore, in order to ensure the health of the users, it is necessary to disinfect the inside of these boxes including the contents. For example, Chinese invention patent publication number CN 209732861 U discloses a multifunctional makeup box for daily use, which comprises a box body, a lid, a drawer No. 1 and a storage compartment for large items, the lid being hinged on the top of the box body, the storage compartment for large items being installed on the top of the box body, the drawer No. 1 being installed on the bottom of the storage compartment for large items, a paper drawer being installed on one end of the storage compartment for large items, and the paper drawer being located at the top of the inner cavity of the box body, a disinfection box being installed at the bottom of the drawer No. 1, a disinfection lamp being installed on the top of the disinfection box, a jewelry box being installed on one side of the disinfection box, a sponge being adhered to the bottom of the inner cavity of the jewelry box, activated carbon being filled on the inner sides of the side walls of the box body and the lid, a Bluetooth speaker being installed on the top of one end of the box body, a mirror being installed on the top of the inner cavity of the lid, LED lights being installed on four sides of the mirror, a mobile phone holder being installed on one end of the top of the inner cavity of the lid, a clock being fixedly provided on one end of the mobile phone holder, and the clock being located on the side wall of the lid. In the multifunctional daily makeup box, a disinfection box is installed at the bottom of drawer No. 1, a disinfection lamp is installed under the partition on the top of the disinfection box, the disinfection lamp is electrically connected to the battery box, and then the switch is pressed to control the power supply of the disinfection lamp. The disinfection box can be used to disinfect brushes, face puffs, earrings, etc., thereby improving the hygiene and safety of the tools used.

[0003] However, at present, ultraviolet disinfection trash cans generally use cold cathode ultraviolet lamps as light sources. At present, the power supply of ultraviolet lamps requires circuits such as ballasts. The power supply circuit is complex and bulky, with high power and low efficiency. At present, such boxes are generally powered by batteries. When the power consumption is high, larger capacity batteries are required, which increases the size and weight of the box and cannot meet the current requirements of emission reduction, efficiency improvement, and lightness and compactness. Summary of the invention

[0004] The purpose of the present invention is to provide a disinfection box that uses an inverter boost circuit as the driving power supply for an infrared lamp, in order to address the shortcomings of the current ultraviolet lamp driving power supply of a disinfection box, which requires the use of a ballast, has a complex and bulky power circuit, high power, and low efficiency and cannot meet the current requirements for emission reduction and efficiency improvement and a compact box size.

[0005] The technical scheme of the device in the present invention is: a disinfection box, including an ultraviolet light source for generating ultraviolet rays and a control circuit board, the ultraviolet light source is a cold cathode ultraviolet lamp, the control circuit board has a driving circuit for the cold cathode ultraviolet lamp, the driving circuit includes a transistor Q6, a transistor Q4, a transistor Q3, an inductor L2, and a transformer U3, a main controller generates a light-on signal Light on and connects to the base of the transistor Q6, the emitter of the transistor Q6 is grounded, and the collector is respectively connected to the emitters of the transistor Q4 and the transistor Q3; a power supply ZWD_5V passes through the inductor L2 and then passes through the resistor R8 and the resistor R7 and then connects to the base of the transistor Q3 and the transistor Q4, the base and collector of the transistor Q4, the power supply ZWD-5V after passing through the voltage L2, and the collector and base of the transistor Q3 are respectively connected to five pins of the primary side of the transformer U3, and two pins of the secondary side of the transformer U3 output a high-voltage AC signal for driving the cold cathode ultraviolet lamp.

[0006] In the present invention, a triode and a transformer are used to drive a cold cathode ultraviolet lamp, and the circuit is small in size and has low power consumption. Further, in the above disinfection box: a main controller and its peripheral circuits are also provided on the control circuit board, and the main controller adopts a single chip microcomputer U2 of the model STM8S.

[0007] Furthermore, in the above-mentioned disinfection box: there is also a wireless charging circuit on the control circuit board for charging the disinfection box battery, and the wireless charging circuit adopts the WP8035 wireless charging module.

[0008] Furthermore, in the above-mentioned disinfection box: the power supply mother socket on the control circuit board adopts a TYPE_C mother socket, in the TYPE_C mother socket, the B12 pin, the A1 pin, the A12 pin, and the B1 pin are connected to the ground with a thick wire greater than 2 mm; the A4 pin, the A9 pin and the B9 pin, the B4 pin are respectively connected to the ground with a thick wire greater than 2 mm; the VBUS signals output by the B4 pin and the B9 pin are respectively grounded through a parallel diode D3, a capacitor C0, and a capacitor C1, and the P pole of the diode D3 is grounded; the A5 pin and the B5 pin are connected through a resistor R29, and the A5 pin is grounded through a resistor R27, and the B5 pin is grounded through a resistor R28.

[0009] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 , schematic diagram of the ultraviolet lamp driving circuit according to an embodiment of the present invention.

[0011] Attached Figure 2 , schematic diagram of the main control circuit of an embodiment of the present invention.

[0012] Attached Figure 3 , TYPE_C interface connection diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0013] The present embodiment provides a disinfection box for storing jewelry, cosmetics or other personal items such as glasses. In the present embodiment, an inverter circuit is used to generate a frequency-modulated high-voltage electrical signal required by a cold cathode ultraviolet lamp. In the present embodiment, in one round of opening and closing, ultraviolet disinfection is performed on the personal server in the box. In the present embodiment, when the disinfection box is opened (because it is used to hold jewelry at this time, it can be called a disinfection jewelry box, as long as the jewelry box is opened, the jewelry is put in or taken out, and the door of the jewelry box is closed, the ultraviolet lamp, which is a cold cathode ultraviolet lamp, is turned on to disinfect the box, and the light is turned off after the set disinfection time. The ultraviolet lamp is automatically turned on for disinfection, and the power consumption of disinfection is small. The ultraviolet lamp is started only when the lid is closed, which will not cause harm to the operator.

[0014] The control circuit board has a driving circuit for a cold cathode ultraviolet lamp such as Figure 1 As shown, the driving circuit includes transistor Q6, transistor Q4, transistor Q3, inductor L2, and transformer U3. The main controller generates a light-on signal Light on and connects to the base of transistor Q6. The emitter of transistor Q6 is grounded, and the collector is connected to the emitters of transistor Q4 and transistor Q3 respectively. The power supply ZWD_5V passes through the inductor L2 and then passes through the resistor R8 and the resistor R7 and then connects to the base of transistor Q3 and transistor Q4. The base and collector of transistor Q4, the power supply ZWD-5V after the voltage L2, and the collector and base of transistor Q3 are respectively connected to the five pins of the primary side of transformer U3. The two pins of the secondary side of transformer U3 output the high-voltage AC signal that drives the cold cathode ultraviolet lamp. This is a disinfection control circuit, which converts DC into AC and powers the ultraviolet lamp through a transformer. U3 is a transformer used to boost the voltage and the oscillation of the front coil. L2 and the front coil of the transformer form LC oscillation together. When the main controller generates a LightON high level, transistor Q6 is turned on, transistor Q3, and transistor Q4 are turned on, the primary of transformer U3 forms a loop, and high voltage is output at the secondary to drive the ultraviolet lamp.

[0015] The control circuit board also has a main controller and its peripheral circuits. The main controller uses a single-chip microcomputer U2 of the STM8S model. When LightON is at a high level, transistor Q6 is turned on, transistor Q3, and diode Q4 are turned on. The primary of transformer U3 forms a loop, and the secondary outputs high voltage to drive the ultraviolet lamp. In this embodiment, the control circuit board also has a wireless charging circuit for charging the battery of the disinfection box. The wireless charging circuit uses a WP8035 wireless charging module. Figure 2 shown.

[0016] The power supply socket on the control circuit board adopts TYPE_C socket. Figure 3 As shown, the B12 pin, the A1 pin, the A12 pin, and the B1 pin are connected to the ground with a thick wire greater than 2 mm; the A4 pin, the A9 pin and the B9 pin, and the B4 pin are connected to the ground with a thick wire greater than 2 mm; the VBUS signals output by the B4 pin and the B9 pin are grounded through a parallel diode D3, a capacitor C0, and a capacitor C1, respectively, and the P pole of the diode D3 is grounded; the A5 pin and the B5 pin are connected through a resistor R29, and the A5 pin is grounded through a resistor R27, and the B5 pin is grounded through a resistor R28.

Claims

1. A disinfection box, comprising an ultraviolet light source for generating ultraviolet rays and a control circuit board, wherein the ultraviolet light source is an ultraviolet lamp tube, characterized in that: The control circuit board has a driving circuit for the ultraviolet lamp, which includes transistor Q6, transistor Q4, transistor Q3, inductor L2, and transformer U3. The main controller generates a light-on signal connected to the base of transistor Q6, the emitter of transistor Q6 is grounded, and the collector is connected to the emitters of transistor Q4 and transistor Q3 respectively; the power supply ZWD_5V passes through the inductor L2 and then passes through resistors R8 and resistor R7 respectively and then connects to the base of transistor Q3 and transistor Q4, the base and collector of transistor Q4, the power supply ZWD_5V after passing through the inductor L2, and the collector and base of transistor Q3 are respectively connected to the five pins of the primary side of transformer U3, and the two pins of the secondary side of transformer U3 output the high-voltage AC signal for driving the ultraviolet lamp.

2. The disinfection box according to claim 1, characterized in that: Also on the control circuit board is a main controller and its peripheral circuits. The main controller uses a single-chip microcomputer U2 of model STM8S.

3. The disinfection box according to claim 1 or 2, characterized in that: The control circuit board also has a wireless charging circuit for charging the disinfection box battery, and the wireless charging circuit adopts a WP8035 wireless charging module.

4. The disinfection box according to claim 1 or 2, characterized in that: The power supply socket on the control circuit board adopts a TYPE_C socket. In the TYPE_C socket, the B12 pin, the A1 pin, the A12 pin, and the B1 pin are connected to the ground with a thick wire greater than 2 mm; the A4 pin, the A9 pin and the B9 pin, and the B4 pin are respectively connected to the ground with a thick wire greater than 2 mm; the VBUS signals output by the B4 pin and the B9 pin are respectively grounded through a parallel diode D3, a capacitor C0, and a capacitor C1, and the P pole of the diode D3 is grounded; the A5 pin and the B5 pin are connected through a resistor R29, and the A5 pin is grounded through a resistor R27, and the B5 pin is grounded through a resistor R28.

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