Lighter capable of serving as hand warmer

Abstract

A lighter capable of being used as a hand warmer comprises a shell, an ignition assembly is arranged in the shell, and at least one first control switch used for controlling the ignition assembly is arranged on the surface of the shell; the heating body is arranged in the shell and electrically connected with a heating assembly arranged in the shell, a second control switch used for controlling the heating assembly is arranged on the surface of the shell, and the heating body can be controlled to transfer heat to the surface of the shell. The battery of the electric arc lighter is used for supplying power, the heating assembly parallel to the ignition assembly is additionally arranged, heating of the heating body is achieved through the second control switch, and then the lighter can be used as a hand warmer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ignition, specifically relates to a lighter which can be used as a hand warmer. BACKGROUND

[0002] The lighter is a small object carried by the side, which is divided into kerosene lighter, gas lighter, electric arc lighter and so on, and for the electric arc lighter, the electric arc is generated through the built-in battery, so as to be used as the ignition source, and due to the built-in battery, the functional design can be carried out, and the conventional electric arc lighter is mostly used for integrated lighting function, so that it can be applied to the lighting use in the field or dark environment.

[0003] For the cold environment, how to use the lighter as a heating source is urgent to be researched and developed. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a lighter which can be used as a hand warmer.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A lighter which can be used as a hand warmer comprises:

[0007] A shell is provided with an ignition assembly inside, and at least one first control switch for controlling the ignition assembly is arranged on the surface of the shell;

[0008] A heating body is arranged inside the shell and is electrically connected with a heating assembly arranged in the shell, and a second control switch for controlling the heating assembly is arranged on the surface of the shell,

[0009] The heating body can controllably transfer heat to the surface of the shell.

[0010] Any side of the shell is provided with a mounting groove, the heating body is arranged in the mounting groove, an opening is arranged in the bottom of the mounting groove and is communicated with the inside of the shell, and a metal plate is arranged at the mounting groove and is used for closing the mounting groove.

[0011] The heating body is attached to the inner side surface of the metal plate

[0012] The ignition assembly is an electric arc ignition assembly, which comprises a circuit board integrated with a control circuit, an electric arc generating head, a high-voltage package and a battery.

[0013] The heating assembly and the ignition assembly share one circuit board.

[0014] The heating body is a PI polyimide heating film or a silica gel heating sheet.

[0015] The shell is provided with a support for bearing the ignition assembly.

[0016] The bracket is provided with a slot for placing a circuit board along a length direction.

[0017] One side of the slot is provided with at least two elastic arms respectively corresponding to the first control switch and the second control switch.

[0018] One side of the slot is provided with a side wall with a plurality of light transmission holes, and a partition is arranged between each light transmission hole.

[0019] The beneficial effect of the utility model is: using the battery of the electric arc lighter as power supply, by increasing the heating assembly parallel to the ignition assembly, the heating of the heating body is realized through the second control switch, and then the lighter can be used as a hand warmer. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structural schematic diagram of the utility model.

[0021] Figure 2 It is the sectional view schematic diagram of the thickness direction of the utility model.

[0022] Figure 3 It is the sectional view schematic diagram of the width direction of the utility model.

[0023] Figure 4 It is the explosion schematic diagram of the metal plate and the heating body of the utility model.

[0024] Figure 5 It is the internal structure schematic diagram of the utility model.

[0025] Figure 6 It is the structural schematic diagram of the bracket of the utility model.

[0026] Figure 7 It is the circuit principle diagram of the control chip of the utility model.

[0027] Figure 8 It is the circuit principle diagram of the ignition driving circuit of the utility model.

[0028] Figure 9 It is the circuit principle diagram of the heating driving circuit of the utility model.

[0029] Figure 10 It is the circuit principle diagram of the switch circuit of the utility model.

[0030] Figure 11 It is the circuit principle diagram of the indication circuit of the utility model.

[0031] Figure 12 It is the circuit principle diagram of the charging management circuit of the utility model. DETAILED DESCRIPTION

[0032] 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.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are used only to explain the relative position relationship and movement condition between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 , the utility model provides a lighter which can be used as a hand warmer, which comprises a shell, the shell comprises an outer shell, a support arranged in the outer shell, a middle frame and a bottom cover arranged at the upper and lower ends of the support, and the outer shell is further provided with a swingable head cover. A ignition assembly capable of realizing complete electric arc ignition is arranged in the shell. The ignition assembly is an electric arc ignition assembly, which comprises a circuit board 800 integrated with a control circuit, an electric arc generating head 900, a high-voltage package 600 and a battery 700, wherein the electric arc generating head is arranged on the middle frame and has two oppositely arranged electrodes capable of generating electric arc under control.

[0035] A safety switch is arranged at the position close to the head cover of the support, and the safety switch can be triggered to activate the circuit board after the head cover is opened, thereby playing a protective role and avoiding the generation of electric arc due to accidental touch during carrying.

[0036] The surface of the shell 100 is provided with at least one first control switch 200 for controlling the ignition assembly, and the control of the electric arc can be realized by pressing the first control switch 200.

[0037] In addition to the ignition assembly, a heating assembly is further arranged in the shell for controlling the working of a heating body, wherein the battery of the ignition assembly is shared by the heating assembly, and the heating assembly is integrated on the same circuit board as the ignition assembly, or an additional circuit board can be arranged, preferably the same circuit board. Furthermore, the heating body 500 is arranged inside the shell 100 and is electrically connected to the heating assembly arranged in the shell 100, and the surface of the shell 100 is provided with a second control switch 300 for controlling the heating assembly. The heating body 500 can transmit heat to the surface of the shell 100 under control, and the user can obtain the heat for warming hands from the shell when holding the lighter.

[0038] In the embodiment, two control switches are used to control the heating assembly and the ignition assembly respectively, and in other embodiments, a single button is used for multifunctional control, such as long press or short press for function division control.

[0039] Meanwhile, the heating assembly can also be controlled by a single button, or the heating temperature can be adjusted by setting the long or short press time of the button or by setting the press times of the button.

[0040] As shown in Figure 4 Any side of the shell 100 is provided with a mounting groove 110, the heating body 500 is placed in the mounting groove 110, and the bottom of the mounting groove 110 is provided with an opening 111 communicating with the inside of the shell, and the mounting groove 110 is provided with a metal plate 400 for closing the mounting groove 110. By recessing the mounting groove on the outer surface of the shell, the shell is used to realize the isolation between the inside of the shell and the heating body, and at the same time, the mounting groove is closed by the metal plate, so that the metal plate and the heating body are as close as possible, so that the heat can be conducted to the metal plate, and the shell can be made of insulating material.

[0041] The heating body 500 is a PI polyimide heating film or a silica gel heating sheet, which is arranged between the metal plate and the shell, and the heating body is clamped by the two, so that it will not be deformed, and at the same time, the heat can be quickly conducted to the metal plate. The metal plate can be an aluminum plate.

[0042] The heating body is a film and is attached to the inner surface of the metal plate as close to the metal plate as possible, so that the heat transfer loss is smaller.

[0043] The shell 100 is provided with a support 120 for bearing the ignition assembly, the support is inserted into the shell, and the support is provided with a mounting space for mounting the battery and the high-voltage pack.

[0044] As shown in Figure 5 The support 120 is provided with a slot for placing the circuit board 800 along the length direction, and the circuit board is directly limited by the slot, so that the tactile switch on the circuit board can be correspondingly arranged with the first control switch and the second control switch, and the operation is facilitated.

[0045] As shown in Figure 6 One side of the slot is provided with at least two elastic arms 121 correspondingly arranged with the first control switch 200 and the second control switch 300, the two elastic arms have an opening therebetween, and each elastic arm can be slightly deformed under force, so that the control switch is deformed under force and triggers the tactile switch on the circuit board. The structure is simple and does not require additional parts.

[0046] The side of the slot is provided with a side wall 122 with a plurality of light transmission holes 123, and a partition 124 is arranged between each light transmission hole. The partitions ensure that the light transmission holes do not interfere with each other, thereby ensuring more accurate indication.

[0047] The outer side of the side wall 122 is provided with a light guide 130 for guiding the light on the circuit board to the outside, thereby facilitating the user to understand the current state.

[0048] The circuit board is integrated with the following circuits:

[0049] The control chip is based on a single-chip microcomputer U2, which receives signals input by the switching circuit, outputs corresponding control signals according to the settings, and drives the ignition driving circuit or the heating driving circuit, respectively. See Figure 7 ;

[0050] The ignition driving circuit controls the power-on and power-off of the high-voltage pack according to the control signals output by the control chip, thereby controlling the generation of electric arc by the high-voltage pack. The specific circuit uses a conventional driving circuit, so it will not be described in detail. See Figure 8 ;

[0051] The heating driving circuit is connected to an output pin of the control chip U2 and controls the operation of the heating body according to the control signals output by the control chip. It is based on a MOS tube Q1, which controls the conduction of the MOS tube through the output pulse signal, thereby realizing the power-on of the heating body. The specific circuit is as follows: Figure 9 ;

[0052] The switching circuit uses multiple independent switching loops connected to different pins of the control chip, thereby realizing different function controls. See Figure 10 ;

[0053] The charging management circuit is used for battery charging control and uses a conventional charging management circuit. This application will not describe it in detail. The specific circuit is as follows: Figure 12 ;

[0054] The indication circuit is used for state indication and includes multiple parallel light-emitting diode indication circuits, one end of which is connected to different pins of the control chip, thereby realizing different state indications according to the output signals, as shown in Figure 11 .

[0055] The ignition driving circuit, control chip, and switching circuit constitute the control circuit of the ignition assembly, and the heating driving circuit, switching circuit, and control chip constitute the heating assembly.

[0056] The user turns on the hand warming function by a specific key (or combination key) and selects the gear (if any).

[0057] The control chip starts the warming mode:

[0058] The heating film is driven at a high initial power (or full power), and the corresponding indicator light is lit (e.g., flashing).

[0059] The heating film starts heating, and the heat is transferred to the metal plate on the shell.

[0060] Meanwhile, temperature detection can be achieved by setting a temperature sensor or PTC close to the heating body. Temperature detection by the temperature sensor or PTC can also be used to control several temperature levels. This part is based on a conventional temperature detection module, so it will not be described in detail in this application.

[0061] The control chip uses PWM to dynamically adjust the power output, so that the temperature quickly reaches and stabilizes around the set target value (constant temperature control).

[0062] The indicator light turns on (indicating a constant temperature state).

[0063] The embodiments should not be considered as limiting the utility model, but any improvement based on the spirit of the utility model should be within the scope of protection of the utility model.

Claims

1. A lighter that can be used as a hand warmer, characterized in that: It includes: The shell (100) is provided with an ignition assembly inside, and the surface is provided with at least one first control switch (200) for controlling the ignition assembly; The heating body (500) is inside the shell (100), and it is electrically connected with the heating assembly arranged in the shell (100), and the surface of the shell (100) is provided with a second control switch (300) for controlling the heating assembly, The heating body (500) can be controlled to transfer heat to the surface of the shell (100).

2. A lighter that can be used as a hand warmer according to claim 1, characterized in that: Any side of the shell (100) is provided with a mounting groove (110), the heating body (500) is arranged in the mounting groove (110), and the bottom of the mounting groove (110) is provided with an opening (111) communicated with the inside of the shell, and the mounting groove (110) is provided with a metal plate (400) for closing the mounting groove (110).

3. A lighter that can be used as a hand warmer according to claim 2, characterized in that: The heating body is attached to the inside surface of the metal plate.

4. A lighter that can be used as a hand warmer according to claim 1, characterized in that: The ignition assembly is an electric arc ignition assembly, which includes a circuit board (800) integrated with a control circuit, an electric arc generating head (900), a high voltage package (600) and a battery (700).

5. A lighter that can be used as a hand warmer according to claim 1 or 4, characterized in that: The heating assembly and the ignition assembly share one circuit board.

6. A lighter that can be used as a hand warmer according to claim 1, characterized in that: The heating body (500) is a PI polyimide heating film or a silica gel heating sheet.

7. A lighter that can be used as a hand warmer according to claim 1 or 4, characterized in that: The shell (100) is provided with a support (120) for bearing the ignition assembly.

8. A lighter that can be used as a hand warmer according to claim 7, characterized in that: The support (120) is provided with a slot for placing the circuit board (800) along the length direction.

9. A lighter that can be used as a hand warmer according to claim 8, characterized in that: One side of the slot is provided with at least two elastic arms (121) corresponding to the first control switch (200) and the second control switch (300) respectively.

10. A lighter that can be used as a hand warmer according to claim 8, characterized in that: One side of the slot is provided with a side wall (122) with a plurality of light transmission holes (123), and a partition (124) is arranged between each light transmission hole.

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