Handheld fan with digital display function

Abstract

The utility model discloses a hand-held fan with a digital display function, which comprises a hand-held fan main body, the hand-held fan main body comprises a shell, the shell is provided with a hand-held part, and a cavity is arranged in the hand-held part; the draught fan assembly is installed in the shell body; the semiconductor chilling plate is installed in the shell and located at the air outlet of the fan assembly, and the front end face of the semiconductor chilling plate is a refrigeration face; and the flexible display screen is arranged in the cavity and attached to the handheld part, and light emitted by the flexible display screen penetrates through the handheld part to be emitted out of the shell and outputs image information. The display scheme that the flexible display screen is combined with 45 LED lamp beads is adopted, meanwhile, the semiconductor chilling plate is installed, and the design is novel and fashionable.

Description

Technical Field

[0001] The utility model relates to the technical field of handheld fans, in particular to a handheld fan with a digital display function. Background Art

[0002] A handheld fan is a small portable fan that users can carry with them conveniently and take out at any time to blow air and dissipate heat.

[0003] The existing Chinese patent with announcement number CN 213901307 U discloses a handheld fan with a semiconductor cooling plate installed in front of the fan. When in use, the user can directly place the front end surface of the cooling element on the skin and cooperate with the airflow generated by the fan assembly to perform the most direct double cooling of the human body and obtain a better cooling effect.

[0004] However, the above handheld fans do not have a digital display function, or a digital display board is installed in a slot on the shell, and the appearance and structure are relatively ordinary without fashion and individuality. Utility Model Content

[0005] The purpose of the utility model is to provide a handheld fan with a digital display function, which adopts a flexible display screen and a display solution composed of 45 LED lamp beads, and is installed with a semiconductor cooling sheet, with a novel and fashionable design.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A handheld fan with a digital display function, comprising a handheld fan body, the handheld fan body comprising:

[0007] A housing, wherein the housing has a hand-held portion, and the hand-held portion has a cavity therein;

[0008] A fan assembly, wherein the fan assembly is installed inside the housing;

[0009] A semiconductor cooling sheet is installed in the housing and located at the air outlet of the fan assembly, and the front end surface of the semiconductor cooling sheet is a cooling surface;

[0010] A flexible display screen is arranged in the cavity and fits the handheld part. Light emitted by the flexible display screen is emitted out of the shell through the handheld part and outputs image information.

[0011] The utility model is further configured as follows: the flexible display screen is provided with a plurality of LED lamp beads, and the LED lamp bead arrays are respectively.

[0012] The utility model is further configured as follows: the cavity is provided with a circuit board and a battery, an arc frame is provided on the circuit board, the arc frame faces the inner wall of the handheld part, and the flexible display screen is arranged in the arc frame.

[0013] The utility model is further configured as follows: a lever switch is provided on the handheld portion, the lever switch has three gears, the first gear is the off state, the second gear is the single fan on mode, and the third gear is the semiconductor refrigeration mode.

[0014] The utility model is further configured as follows: a dial switch is arranged on the handheld part, and the dial switch has three key positions. Pressing the dial switch is for turning on the machine and quickly adjusting the wind speed of the fan assembly; toggling the dial switch upward or downward is for adjusting the wind speed of the fan assembly, with stepless speed regulation.

[0015] The utility model is further configured as follows: the handheld part is provided with a charging interface, the circuit board is provided with a charging circuit, the charging interface is electrically connected to the circuit board, and the battery is electrically connected to the circuit board.

[0016] The utility model is further configured as follows: the circuit board is provided with a control chip U3, the control chip U3 is electrically connected to the dial switch and the lever switch, and the control chip U3 outputs signals to control the rotation of the fan assembly, the cooling of the semiconductor refrigeration sheet and the rotation speed of the fan assembly.

[0017] The utility model is further configured as follows: the cooling circuit on the circuit board includes a MOS tube Q1, the control chip U3 is connected to the MOS tube Q1, the control chip U3 outputs a signal to control the MOS tube Q1 to be turned on to control cooling, the fan circuit on the circuit board includes a MOS tube Q2, the control chip U3 is connected to the MOS tube Q2, and outputs PWM speed regulation to control the rotation of the motor.

[0018] The utility model is further configured as follows: it also includes a base, the base is provided with a placement slot, the handheld part is placed in the placement slot, and the rotating motor in the base drives the placement slot to reciprocate.

[0019] The utility model is further configured as follows: a conductive spring is provided in the placement slot, the handheld part is placed in the placement slot, the battery of the handheld fan is electrically connected to the conductive spring, the battery supplies power to the rotating motor in the oscillating base, and the oscillating base charges the battery.

[0020] Compared with the prior art, the handheld fan of the utility model uses a flexible display screen and a display solution composed of 45 LED lamp beads. It can display traditional numbers and other animation effects and has a cooling function. The semiconductor cooling plate contacts the skin to cool down while blowing air. The dial switch is used to steplessly adjust the motor speed. The base has a shaking head function. When the handheld fan is placed, it shakes its head to blow air. It also has a mutual charging function. When the handheld fan is placed on the base, the battery powers the rotating motor, and the base can also charge the battery through the second charging interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a front schematic view of the handheld fan body in the embodiment.

[0022] Figure 2 It is a back schematic view of the handheld fan body in the embodiment.

[0023] Figure 3 It is a sectional schematic view of the handheld fan body in the embodiment.

[0024] Figure 4 It is an exploded schematic view of the handheld fan body in the embodiment.

[0025] Figure 5 It is a schematic view after the handheld fan body and the base are placed in the embodiment.

[0026] Figure 6 It is a schematic view of the base in the embodiment.

[0027] Figure 7 It is an exploded schematic view of the base in the embodiment.

[0028] Figure 8 It is a circuit schematic diagram of the flexible display screen in the embodiment.

[0029] Figure 9 It is a circuit schematic diagram in the circuit board in the embodiment.

[0030] Figure 10 It is a circuit schematic diagram of the second circuit board in the embodiment.

[0031] In the figure: 100, handheld fan body; 101, air duct; 102, annular air outlet; 103, air inlet; 104, fan assembly; 105, motor; 106, impeller; 107, special-shaped fan blade; 108, fan housing; 109, guide cover; 110, air outlet cover; 111, semiconductor refrigeration sheet; 112, handheld part; 113, cavity; 114, circuit board; 115, battery; 116, flexible display screen; 117, arc-shaped frame; 118, toggle switch; 119, dial switch; 120, first charging interface; 200, base; 201, placement groove; 202, rotating motor; 203, conductive elastic sheet; 204, second charging interface. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Such as Figure 1-4As shown in the figure, this embodiment discloses a handheld fan with a digital display function. The handheld fan body 100 includes a housing. The housing has an air duct 101. A fan assembly 104 is installed in the air duct 101. The fan assembly 104 blows air forward. An annular air outlet 102 is provided on the housing, and the air flows out from the annular air outlet 102. The fan assembly 104 includes a motor 105 and an impeller 106. The impeller 106 is installed in the air duct 101 and connected to the motor 105. The motor 105 is used to drive the impeller 106 to rotate. The impeller 106 faces the air inlet 103, and there is a certain distance between the impeller 106 and both the air inlet 103 and the annular air outlet 102. The impeller 106 is housed in the air duct 101, and it is difficult for fingers or foreign objects to touch the fan blades, making it safer to use.

[0034] As Figure 3 , 4 shown in the figure, the housing where the air duct 101 is located includes a fan housing 108, a flow guide cover 109, and an air outlet cover 110. Among them, the fan housing 108 has a long cylindrical structure. The flow guide cover 109 is arranged inside the fan housing 108. The air duct 101 is arranged inside the flow guide cover 109. The air outlet cover 110 is snap-connected to one end of the flow guide cover 109. The annular air outlet 102 is circumferentially arranged on the air outlet cover 110. The air flow formed by the rotation of the impeller 106 blows out from the annular air outlet 102 along the flow guide cover 109. A plurality of special-shaped fan blades 107 are arranged on the impeller 106. The special-shaped fan blades 107 cause the air flow to converge towards the inner wall of the flow guide cover 109 and blow out from the annular air outlet 102. The special-shaped fan blades 107 make the air outlet converge, improving the air pressure and wind speed and making the air supply distance farther. The flow guide cover 109 has a hollow structure to guide the air flow to blow out from the annular air outlet 102. The setting of the flow guide cover 109 can isolate the internal noise generated during the operation of the fan assembly 104, achieving a noise reduction effect and reducing eddy currents.

[0035] A semiconductor refrigeration sheet 111 is arranged on the air outlet cover 110. The semiconductor refrigeration sheet 111 is installed on the housing. The front end face of the semiconductor refrigeration sheet 111 is the refrigerating surface. After the semiconductor refrigeration sheet 111 is started, the refrigerating surface cools down.

[0036] As Figure 3 , 4 shown in the figure, the housing has a handheld part 112 for the user to hold. There is a cavity 113 inside the handheld part 112. A circuit board 114 and a battery 115 are arranged in the cavity 113, and a flexible display screen 116 is arranged in the cavity 113. The flexible display screen 116 is installed in an arc-shaped frame 117 and is arranged in a manner that fits the inner side wall of the handheld part 112. The housing of the handheld part 112 is made of a transparent material. The light emitted by the flexible display screen 116 can pass through the handheld part 112 and shoot out of the housing to output image information.

[0037] As Figure 8As shown, 45 LED lamp beads are arranged on the flexible display screen 116, and the 45 LED lamp beads are arranged in a 5*9 array format, which can display digital patterns as well as other animation effects.

[0038] like Figure 2 As shown, a lever switch 118 is provided on the back of the display surface of the handheld portion 112 of the housing, and a dial switch 119 is provided on the side of the display surface. The lever switch 118 is electrically connected to the circuit board 114, and the dial switch 119 is electrically connected to the circuit board 114. The lever switch 118 has three gears, the first gear is the off state, the second gear is the single fan on mode, and the third gear is the semiconductor refrigeration mode; the dial switch 119 also has three operation modes, namely pressing, dialing up and dialing down. When the dial switch 119 is pressed, the handheld fan motor 105 is turned on and rotates at a speed of 1%, and the dial switch 119 is pressed down continuously. Switch 119 quickly adjusts the speed of the motor 105. The speed of the motor 105 is reciprocated at 1%, 25%, 50%, 75%, and 100% respectively. In this embodiment, the maximum speed of the motor 105 is 100%. The motor 105 adopts a high-speed DC brushless motor 105, specifically a motor 105 with a speed of 1000 to 10,000 revolutions per minute. The minimum speed of the motor 105 is 1%, and the maximum speed is 100%. By moving the dial switch 119 upward and downward, the rotation speed of the motor 105 can be continuously adjusted from 1% to 100%, and stepless speed regulation is performed.

[0039] like Figure 2 As shown, a first charging interface 120 is provided on the handheld portion 112 , and the first charging interface 120 is electrically connected to the circuit board 114 . The handheld fan charges the battery 115 through the first charging interface 120 .

[0040] like Figure 9 As shown, the circuit board 114 has a control chip U3, and the dial switch 119 and the lever switch 118 are connected to the control chip U3 to output signals to the control chip U3. The control chip U3 outputs signals to realize functions such as fan rotation, cooling and numerical display.

[0041] like Figure 9 As shown, the cooling circuit includes a MOS tube Q1, the control chip U3 is connected to the MOS tube Q1, and the control chip U3 outputs a signal to control the MOS tube Q1 to be turned on to control the cooling; the fan circuit includes a MOS tube Q2, the control chip U3 is connected to the MOS tube Q2, and the output signal PWM speed regulation controls the rotation of the fan motor 105.

[0042] like Figure 5-7As shown in the figure, the hand-held fan also has a base 200. A placement groove 201 is provided at the upper part of the base 200. The hand-held fan can be placed in the placement groove 201 for placement. A rotating motor 202 is provided inside the base 200. The rotating motor 202 can drive the placement groove 201 to rotate back and forth for shaking the head. A second circuit board 114 is provided inside the base 200. A conductive elastic sheet 203 is provided inside the placement groove 201. When the hand-held fan is placed in the placement groove 201, the battery 115 of the hand-held fan is electrically connected to the conductive elastic sheet 203. The conductive elastic sheet 203 is point-connected to the second circuit board 114. The battery 115 of the hand-held fan can supply power to the rotating motor 202 inside the base 200 through the conductive elastic sheet 203. The base 200 is provided with a second charging interface 204. The base 200 can charge the battery 115 of the hand-held fan through the second charging interface 204 and the conductive elastic sheet 203.

[0043] As Figure 10 shown, the circuit on the second circuit board 114; the base 200 can charge the battery 115 of the hand-held fan through the second charging interface 204 and the conductive elastic sheet 203 via the circuit. After connecting the power cord, the machine can be charged and the base 200 can be powered at the same time. The body and the base 200 are connected and powered by the conductive elastic sheet 203. The battery 115 can also supply electrical energy to the rotating motor 202 through the conductive elastic sheet 203 via the circuit. In the case of not being plugged in, the base 200 can be powered reversely by the body battery 115 for powering the rotating motor 202.

[0044] The above is only the preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structures, features, and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A handheld fan with a digital display function, comprising a handheld fan body (100), characterized in that: The handheld fan body (100) comprises: A housing, the housing having a hand-held portion (112), the hand-held portion (112) having a cavity (113) therein; A fan assembly (104), the fan assembly (104) being installed inside the housing; A semiconductor cooling sheet (111) is installed in the housing and located at the air outlet of the fan assembly (104), and the front end surface of the semiconductor cooling sheet (111) is a cooling surface; A flexible display screen (116) is arranged in the cavity (113) and fits the handheld part (112); light emitted by the flexible display screen (116) is transmitted through the handheld part (112) to the outside of the housing and outputs image information.

2. A handheld fan with digital display function according to claim 1, characterized in that: The flexible display screen (116) is provided with a plurality of LED lamp beads, and the LED lamp bead arrays are respectively.

3. The handheld fan with digital display function according to claim 1, characterized in that: The cavity (113) is provided with a circuit board (114) and a battery (115); an arc frame (117) is provided on the circuit board (114); the arc frame (117) faces the inner wall of the handheld part (112); and the flexible display screen (116) is provided in the arc frame (117).

4. The handheld fan with digital display function according to claim 1, characterized in that: The handheld part (112) is provided with a lever switch (118), and the lever switch (118) has three gears, the first gear is an off state, the second gear is a single fan on mode, and the third gear is a semiconductor cooling mode.

5. The handheld fan with digital display function according to claim 1, characterized in that: The handheld portion (112) is provided with a dial switch (119), and the dial switch (119) has three key positions. Pressing the dial switch (119) turns on the machine and quickly adjusts the wind speed of the fan assembly (104); and toggling the dial switch upward or downward adjusts the wind speed of the fan assembly (104) to achieve stepless speed regulation.

6. The handheld fan with digital display function according to claim 3, characterized in that: The handheld part (112) is provided with a charging interface, the circuit board (114) is provided with a charging circuit, the charging interface is electrically connected to the circuit board (114), and the battery (115) is electrically connected to the circuit board (114).

7. The handheld fan with digital display function according to claim 6, characterized in that: The circuit board (114) is provided with a control chip U3, the control chip U3 is electrically connected to the dial switch (119) and the lever switch (118), and the control chip U3 outputs signals to control the rotation of the fan assembly (104), the cooling of the semiconductor refrigeration plate (111) and the rotation speed of the fan assembly (104).

8. The handheld fan with digital display function according to claim 7, characterized in that: The cooling circuit on the circuit board (114) includes a MOS tube Q1, a control chip U3 is connected to the MOS tube Q1, and the control chip U3 outputs a signal to control the MOS tube Q1 to be turned on to control cooling. The fan circuit on the circuit board (114) includes a MOS tube Q2, and the control chip U3 is connected to the MOS tube Q2 to output a PWM speed control to control the rotation of the motor (105).

9. The handheld fan with digital display function according to claim 1, characterized in that: It also comprises a base (200), wherein the base (200) is provided with a placement slot (201), the handheld part (112) is placed in the placement slot (201), and a rotating motor (202) in the base (200) drives the placement slot (201) to reciprocate.

10. The handheld fan with digital display function according to claim 9, characterized in that: A conductive spring (203) is provided in the placement slot (201), and the battery (115) of the handheld fan is electrically connected to the conductive spring (203). The battery (115) supplies power to the rotating motor (202) in the oscillating base (200), and the oscillating base (200) charges the battery (115).

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