Festival lamp string repairing tool

Abstract

The utility model discloses a festival lamp string repairing tool which comprises a handheld body formed by detachably splicing a left cover face and a right cover face, and a high-voltage pulse series-parallel repairing system, a non-contact alternating-current voltage detection system and a testing system are arranged in the handheld body. According to the utility model, the function of repairing the lamp string is integrated, high-voltage pulse is output through the piezoelectric igniter to break down the diverter in the bulb, and current flows through the diverter, so that the bulb which cannot be lightened can be quickly found and replaced, and the festival lamp string can be repaired; meanwhile, the same test socket is adopted for testing the fuse and the bulb, and the two functions are combined to test whether the bulb is broken down or not; by using micro-control processing for an AC voltage detection function, the circuit is simple, the number of components is small, the PCB area is small, implementation is easy, and a low-voltage detection function is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of repair and testing tools, and in particular to a repair tool for festival light strings. Background Technology

[0002] String lights for festivals consist of bulbs connected in series within each string. Typically, multiple strings are connected in parallel to form a light group. Since the bulbs in each string are connected in series, if even one bulb fails to light up, the entire string will not light up. Identifying and replacing the faulty bulb is very laborious and time-consuming. Often, it takes checking many bulbs within the string to find the faulty one, leading many to simply replace it with a new string. Sometimes, the strings are already on decorative items, making replacement even more difficult and potentially damaging the decorations. It's truly inconvenient.

[0003] The reason why a string of festive lights doesn't light up is usually because the bulb filaments have burned out. Underneath the filament of this small bulb is a shunt with an insulating oxide film on its surface. When the filament breaks, applying the full voltage to the bulb's leads causes the non-conductive material to break down, allowing current to flow continuously through the shunt in the damaged bulb to the other bulbs connected in series. However, multiple bulbs in a string may have broken filaments simultaneously, and the voltage may not be enough to break down the insulating layer on the shunt surface, so the entire string of lights will still not light up. Besides burnt-out bulb filaments, other possibilities include stretched, bent, or worn wires. To solve the problem of the string of lights not lighting up, a non-contact AC voltage detector can be used to detect breaks in the string's wiring. Currently, such AC voltage detectors on the market either have a single audio audible signal or an indicator light.

[0004] There are many tools available for repairing or testing string lights, but their functions are relatively limited, requiring multiple tools to be combined to complete the repair, making them inconvenient to use. Therefore, this paper proposes a new tool for repairing festival string lights to address these issues. Utility Model Content

[0005] In order to solve the above-mentioned problems existing in the prior art, this utility model provides a tool for repairing festival light strings.

[0006] The technical solution of this utility model is as follows:

[0007] The utility model provides a holiday light string repair tool, including left cover surface and right cover surface detachable splicing into handheld body, the inside high pressure pulse string parallel repair system, non -contact ac voltage detection system and test system of handheld body are equipped with, the top of handheld body is equipped with fixed base, and the fixed base below sets up the bulb socket connecting device and the light string plug connecting device in high pressure pulse string parallel repair system, test system includes non -contact ac voltage detection and low voltage detection system, non -contact ac voltage detection system includes power, detection switch and ac voltage electric field induction circuit, and ac voltage electric field induction circuit passes through electric field induction wire and connects a resistance in series, and the one end of resistance is grounded and the other end is accessed microcontroller, and after ac voltage electric field induction signal is handled through microcontroller, the program control display electric field signal and intensity size, and low voltage detection system includes low voltage circuit board, and the low voltage circuit board is equipped with contact piece for cooperation high pressure pulse string parallel repair system work.

[0008] Preferably, the high-voltage pulse string parallel repair system includes a high-voltage pulse generating device, which includes a piezoelectric igniter, a fuse, and a fast recovery high-voltage diode arranged inside the use end of the handheld body.

[0009] Preferably, the left cover surface and the right cover surface of the handheld body are gun-shaped and symmetrical to each other, and are fixedly connected by self-tapping screws C. A trigger is installed at the inner corner of the handheld body by machine screws.

[0010] Preferably, the bulb socket connecting device and the light string plug connecting device are fixedly installed on the high-voltage circuit board, which is provided with a bulb lifting piece and an electric field induction wire. The bottom of the high-voltage circuit board is connected to a pressing plate by self-tapping screws A, and the bottom of the high-voltage circuit board is provided with a contact spring matched with the contact piece.

[0011] Preferably, the power supply of the non-contact ac voltage detection system includes a battery compartment, a button cell, and a battery cover arranged in the inner cavity of the handle part of the handheld body. The battery compartment is used for preventing the battery from being reversed, and the detection switch is arranged inside the handheld body.

[0012] Preferably, the test system further includes an internal fuse test and a single bulb test, which includes a power supply, a contact piece, a function selection button, and an indicator light circuit. The fuse and the bulb test share the contact piece. A group of button caps are installed on the outside of the handheld body to control the detection switch. One of the button caps is provided with a function selection button. The detection switch is connected to the positive and negative pieces on the low-voltage circuit board of the low-voltage detection system, and the positive and negative pieces are connected to the panel by positive and negative wires, respectively. When the function selection button is not pressed, it can be used to test the bulb. When the function selection button is pressed, it can be used to test the fuse.

[0013] Preferably, the low-voltage circuit board is arranged on the inner wall of the handheld body by self-tapping screws B.

[0014] The utility model has the following beneficial effects: the utility model has the function of repairing the lamp string is gathered together, convenient to use, and through piezoelectric igniter output high voltage pulse to break down the shunt in the bulb, the use current flows through the shunt, can find the bulb that cannot brighten quickly and replace, thereby repair festival lamp string, at the same time, fuse and bulb test adopt same test socket, two function combinations can test whether the bulb is broken down, through using the alternating voltage detection function with micro -control processing, circuit is simple, component is few, PCB area is small, easy to implement and has low voltage detection function and the like advantages. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure explosion schematic view of the utility model;

[0016] Figure 2 It is the whole structure three-dimensional schematic view of the product of the utility model;

[0017] Figure 3 It is the working system block diagram of the utility model;

[0018] Figure 4 It is the repair mode diagram of the high voltage pulse in the festival lamp string of the utility model;

[0019] Figure 5 It is the repair mode diagram of the high voltage pulse in the festival lamp string of the utility model;

[0020] Figure 6 It is the working circuit principle diagram of the high voltage pulse generator device of the utility model;

[0021] Figure 7 It is the non-contact alternating voltage detection principle diagram of the utility model;

[0022] Figure 8 It is the built-in fuse test and single bulb test circuit principle diagram of the utility model.

[0023] The reference signs in the drawing represent:

[0024] 1, fixed seat, 2, bulb socket connecting device, 3, lamp string plug connecting device, 4, high voltage circuit board, 5, contact spring, 6, electric field induction wire, 7, bulb pry up piece, 8, pressing plate, 9, self-tapping screw A, 10, left cover, 11, self-tapping screw B, 12, low voltage circuit board, 13, contact piece, 14, button cap, 15, function selection button, 16, detection switch, 17, positive piece, 18, positive wire, 19, negative piece, 20, negative wire, 21, panel, 22, battery compartment, 23, button cell, 24, right cover, 25, self-tapping screw C, 26, battery cover, 27, machine screw, 28, trigger, 29, piezoelectric igniter. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Referring to Figures 1 to 8 A holiday lamp string repair tool, comprising a handheld body detachably spliced by a left cover surface 10 and a right cover surface 24, the left cover surface 10 and the right cover surface 24 of the handheld body are gun-shaped and mutually symmetrical and are fixedly connected through self-tapping screws C25, and a trigger 28 is installed at the inner corner of the handheld body through machine screws 27;

[0027] The handheld body is internally provided with a high-voltage pulse string parallel repair system, a non-contact alternating current voltage detection system and a test system; the top of the handheld body is provided with a fixing seat 1, and a lamp bulb socket connecting device 2 and a lamp string plug connecting device 3 in the high-voltage pulse string parallel repair system are arranged below the fixing seat 1; the test system comprises a non-contact alternating current voltage detection and low-voltage detection system; the non-contact alternating current voltage detection system comprises a power supply, a detection switch 16 and an alternating current voltage electric field induction circuit, the alternating current voltage electric field induction circuit is connected in series with a resistor through an electric field induction wire 6, one end of the resistor is grounded and the other end is connected to a microcontroller, after the alternating current voltage electric field induction signal is processed by the microcontroller, the program controls the display of the electric field signal and the intensity, and the program controls the buzzer and the indicator light connected with the microcontroller to prompt the electric field signal and the intensity. Thus, the change of the induction signal is noticed through vision and hearing;

[0028] The stronger the alternating current voltage electric field induction signal is, the faster the frequency of the intermittent buzzer and the indicator light will gradually increase, and when it reaches a certain degree, it will no longer change. According to the decrease of the alternating current voltage electric field intensity near the fault position of the lamp string, the indicator light and the intermittent buzzer will obviously slow down or stop, so that the fault position is determined.

[0029] The low-voltage detection system comprises a low-voltage circuit board 12, the low-voltage circuit board 12 is provided with a contact piece 13 for cooperating with the work of the high-voltage pulse string parallel repair system, and the low-voltage circuit board 12 is arranged on the inner wall of the handheld body through self-tapping screws B11.

[0030] Further, the high-voltage pulse string parallel repair system comprises a high-voltage pulse generating device, a bulb socket connecting device 2 and a lamp string plug connecting device 3, and the bulb socket connecting device 2 and the lamp string plug connecting device 3 are fixedly installed on a high-voltage circuit board 4, the high-voltage circuit board 4 is provided with a bulb lifting piece 7 and an electric field induction wire 6, the bottom of the high-voltage circuit board 4 is installed and connected with a pressing plate 8 through a self-tapping screw A9, and the bottom of the high-voltage circuit board 4 is provided with a contact spring 5 matched with a contact piece 13.

[0031] Firstly, when the high-voltage pulse string parallel repair system is used in a series circuit, the high-voltage pulse generating device and the bulb socket connecting device 2 are used at the same time, one bulb of the non-lighting holiday lamp string is removed, the metal wire or other foreign matters in the bulb socket area are removed, the bulb socket is completely inserted into the bulb socket connecting device 2 of the holiday lamp string repair tool, the lamp string is connected to the power socket, and then the high-voltage pulse generating device is triggered to light up the lamp string. The holiday lamp string plug is pulled out of the power socket, and the bulb removed before is reinstalled into the bulb socket of the holiday lamp string. The holiday lamp string plug is inserted into the normal power socket, and all the lamps except the burnt bulb are lit up.

[0032] Secondly, when the high-voltage pulse string parallel repair system is used in a parallel circuit, the high-voltage pulse generating device and the lamp string plug connecting device 3 are used at the same time, the non-lighting holiday lamp string plug is inserted into the plug connecting device of the holiday lamp string repair tool. If a plurality of lamp strings are connected in series, only the non-lighting lamp string is left by pulling out the remaining lamp strings. If the non-lighting lamp string is composed of two 50-bulb lamp strings, one bulb is removed from the lighting part, and then the lamp string plug is inserted into the plug connecting device of the lamp string repair tool. Then, the high-voltage pulse generating device is triggered for dozens of times, and then the lamp string plug is pulled out of the lamp string repair tool and inserted into the normal power socket. All the lamps except the burnt bulb are lit up. The removed bulb is reinstalled, a plurality of lamp strings are connected in series, and finally the non-lighting bulb is replaced.

[0033] Because the filament of the small bulb in the holiday lamp string has a shunt with an insulating oxide film on the surface, when the filament is broken, the high-voltage pulse applied to the lead of the bulb makes the non-conductive material be broken down, so that the current continuously flows through the shunt in the damaged bulb to the other bulbs connected in series.

[0034] The high-voltage pulse string parallel repair system comprises a high-voltage pulse generating device, the high-voltage pulse generating device comprises a piezoelectric igniter 29 arranged in the inner part of the use end of the handheld body, a fuse and a fast recovery high-voltage diode, the piezoelectric ceramic in the piezoelectric igniter 29 has a piezoelectric effect, pressure is applied to both sides of the piezoelectric ceramic to generate electricity, then the electricity is led out through the external wire to generate a sharp discharge to produce sparks, and the piezoelectric igniter 29 can release tens of thousands of volts of voltage to break through the air in an instant; the fast recovery diode is used to protect the remaining lines from high-voltage pulses.

[0035] When the bulb is connected incorrectly in the bulb socket, the whole string of lights does not light up, the wires and plugs connecting the bulbs to the power socket in the holiday light string, and the high-voltage pulse cannot solve such problems, the repair method is changed to replace the non-contact alternating current voltage detection positioning light string breakpoint.

[0036] The power supply in the non-contact alternating current voltage detection system comprises a battery compartment 22 arranged in the inner cavity of the handle part of the handheld body, a button cell 23 and a battery cover 26, and the detection switch 16 is arranged in the inner part of the handheld body, the detection switch 16 is controlled by a group of key caps 14 arranged on the outer part of the handheld body, one of the key caps 14 is provided with a function selection key 15, the detection switch 16 is connected to the positive pole piece 17 and the negative pole piece 19 on the low-voltage circuit board 12 in the low-voltage detection system, and the positive pole piece 17 and the negative pole piece 19 are connected to the panel 21 through the positive pole wire 18 and the negative pole wire 20 respectively. In the utility model, the non-contact alternating current voltage detection further comprises a microcontroller, an electric field induction circuit, a buzzer circuit, an indicator light circuit and a battery low-voltage detection, the alternating current voltage electric field induction signal is processed by the microcontroller, the program control is used to display the electric field signal and the intensity, the non-contact alternating current voltage detection uses sound or light to prompt the alternating current electric field intensity and the size, the holiday light string is not bright when being connected to the power socket, but the line has voltage before the line breakpoint, and the alternating current electric field intensity decreases near the breakpoint. Press the opening key of the detection switch 16 to start scanning the light string. The voltage detector will quickly flash the indicator light and emit intermittent buzzer sound before the breakpoint, and the frequency of the red light and the intermittent buzzer sound after the breakpoint will become slow or stop emitting light and sound, so as to locate the position of the breakpoint, repair the line breakpoint, make the current pass through, and then light up the light string. The microcontroller with the non-contact alternating current voltage detection function has the battery low-voltage detection, the detection switch 16 is pressed to enter the non-contact alternating current voltage detection function, the indicator light flashes once and the buzzer rings once, if the indicator light periodically flashes, it indicates that the battery has sufficient power, and if the non-contact alternating current voltage detection function cannot work normally and the indicator light is always on or not bright, it indicates that the battery has insufficient power, and the battery should be replaced in time.

[0037] At the same time, the test system further comprises built-in fuse test and single bulb test including power supply, contact piece 13, function selection button 15 and indicator light circuit, the fuse and bulb test share the contact piece 15, the detection switch 16 is not pressed and can be used for testing the bulb, the good bulb emits light, and the bad bulb does not emit light; the detection switch 16 is pressed and is used for testing the fuse, the good fuse indicator light will be bright, and the bad fuse indicator light will not be bright.Combining the above two functions can be used to distinguish whether the shunt in the non-lighting bulb has been broken down, first, the bulb test function is used to confirm that the bulb does not light, then the switch is pressed and the fuse test function is used, the non-lighting bulb has been broken down, the indicator light is lit, and vice versa.

[0038] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the utility model specification and drawing contents, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A festival light string repair tool, comprising a handheld body detachably assembled from a left cover (10) and a right cover (24), characterized in that: The handheld unit is equipped with a high-voltage pulse train parallel repair system, a non-contact AC voltage detection system, and a testing system. The top of the handheld unit is equipped with a fixed base (1), and below the fixed base (1) are the bulb socket connection device (2) and the lamp string plug connection device (3) of the high-voltage pulse train parallel repair system. The testing system includes a non-contact AC voltage detection system and a low voltage detection system. The non-contact AC voltage detection system includes a power supply, a detection switch (16), and an AC voltage electric field sensing circuit. The AC voltage electric field sensing circuit is connected in series with a resistor through an electric field sensing wire (6). One end of the resistor is grounded and the other end is connected to a microcontroller. After the AC voltage electric field sensing signal is processed by the microcontroller, the electric field signal and intensity are displayed through program control. The low voltage detection system includes a low-voltage circuit board (12), and the low-voltage circuit board (12) is equipped with contact pieces for cooperating with the high-voltage pulse train parallel repair system.

2. The festival light string repair tool according to claim 1, characterized in that: The high-voltage pulse series-parallel repair system includes a high-voltage pulse generator, which includes a piezoelectric igniter (29) installed inside the handheld unit, a fuse, and a fast recovery high-voltage diode.

3. The festival light string repair tool according to claim 1, characterized in that: The left cover (10) and right cover (24) of the handheld body are both gun-shaped and symmetrical to each other, and are fixedly connected by self-tapping screws C (25). A trigger (28) is installed at the corner of the handheld body by machine screws (27).

4. The festival light string repair tool according to claim 1, characterized in that: The bulb socket connection device (2) and the lamp string plug connection device (3) are fixedly installed on the high voltage circuit board (4). The high voltage circuit board (4) is provided with a bulb lifting piece (7) and an electric field induction wire (6). The bottom of the high voltage circuit board (4) is installed with a connecting pressure plate (8) by a self-tapping screw A (9). The bottom of the high voltage circuit board (4) is provided with a contact spring (5) that is compatible with the contact piece (13).

5. The festival light string repair tool according to claim 1, characterized in that: The power supply in the non-contact AC voltage detection system includes a battery compartment (22), a button battery (23), and a battery cover (26) located in the inner cavity of the handle of the handheld body. The battery compartment (22) is used to prevent reverse connection of the battery, and the detection switch (16) is located inside the handheld body.

6. The festival light string repair tool according to claim 1, characterized in that: The testing system also includes a built-in fuse test and a single bulb test, including a power supply, contact piece (13), function selection button (15), and indicator light circuit. The fuse and bulb test share the same contact piece (13). The detection switch (16) is controlled by an externally mounted set of button caps (14) installed on the outside of the handheld body. One of the button caps (14) is equipped with a function selection button (15). The detection switch (16) is connected to the positive electrode (17) and negative electrode (19) on the low-voltage circuit board (12) of the low-voltage detection system. The positive electrode (17) and negative electrode (19) are connected to the panel (21) through positive wire (18) and negative wire (20), respectively. When the function selection button (15) is not pressed, it can be used to test the bulb. When the function selection button (15) is pressed, it is used to test the fuse.

7. A festival light string repair tool according to claim 1, characterized in that: The low-voltage circuit board (12) is mounted on the inner wall of the handheld device by a self-tapping screw B (11).

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