JP3111819U - Portable fan with afterimage display function. - Google Patents

Abstract

A power supply unit is made common by supplying power to a lighting control device installed in a rotating blade mounting unit through a commutator and a conductive brush, and the lighting unit is turned on simultaneously with the rotation of a driving unit. Provided is a portable electric fan having an afterimage display function capable of
A portable electric fan having a power supply unit and a drive unit inside a gripping unit, a power switch in the gripping unit, and a blade mounting unit provided at a tip of a rotating shaft rotated by the drive unit. A lighting control device including a plurality of flexible blades, a blade mounting portion having a lighting portion for arranging a plurality of lighting bodies in a circumferential direction from the center of rotation, and controlling lighting of the lighting body in the blade mounting portion A commutator that is attached to the rotating shaft and supplies power to the lighting control device, and a conductive brush that contacts the commutator and supplies power from the power supply unit built in the gripping unit to the lighting control device. did.
[Selection] Figure 1

Description

  The present invention relates to a portable electric fan having an afterimage display function.

  Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 2003-314487 “Portable Fan with Afterimage Display Function” filed by the present applicant, by providing a display function using the afterimage effect of eyes, practicality and entertainment There was a portable electric fan that had both.

However, in the conventional portable electric fan, when the battery is exhausted, the rotation speed is lowered, and the centrifugal force switch provided in the holding member becomes difficult to operate, or the battery for the light emitting side and the battery for the driving unit Since the battery is separated, it may be difficult to determine the exhausted battery, or it may be complicated to replace the button battery in the holding member.
JP 2003-314487 A

  Therefore, the present invention has been made in view of the above-described problems of the prior art, and supplies power to the lighting control device provided in the rotating blade mounting portion via a commutator and a conductive brush. Thus, it is an object to provide a portable electric fan having an afterimage display function that can share a power supply unit and turn on a lighting unit simultaneously with rotation of a driving unit.

  The invention described in claim 1 is a portable electric fan, which has a power supply unit and a drive unit inside the gripping unit and a power switch in the gripping unit, and is provided at the tip of a rotating shaft that is rotated by the drive unit. The blade mounting portion is provided with a plurality of flexible blades, and the blade mounting portion has a lighting portion that arranges a plurality of lighting bodies in the circumferential direction from the center of rotation and controls the lighting of the lighting body in the blade mounting portion. A commutator that is attached to the rotating shaft and supplies power to the lighting control device, and supplies power to the lighting control device that comes into contact with the commutator and that is built in the gripping unit. And a conductive brush.

  The invention according to claim 2 is the device according to claim 1, wherein the commutator is composed of three commutator pieces that are tripolar commutators, the conductive brush is composed of a plus pole brush and a minus pole brush, and the lighting The control device includes a three-phase full-wave rectifier circuit.

  The invention described in claim 3 is characterized in that, in claim 1 or 2, the lighting control device has a storage unit that stores a pattern of lighting and extinguishing of each lighting body of the lighting unit.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the lighting units arranged linearly in the circumferential direction and the opposite positions around the rotation axis of the driving unit are arranged. The balance weight is further provided.

  The invention described in claim 5 is characterized in that, in any one of claims 1 to 4, the plurality of lighting bodies are light emitting diodes or EL elements.

  A device according to a sixth aspect is the device according to any one of the first to fifth aspects, wherein a plurality of lighting unit control information is stored in the storage unit in advance, and the lighting unit control information is automatically switched during operation. It is characterized by having a lighting control device that lights a lighting part by executing.

  The invention described in claim 7 is the device according to any one of claims 1 to 6, wherein a plurality of lighting unit control information is stored in advance in the storage unit, and the lighting unit control information is manually switched during operation. Thus, a lighting control device for lighting the lighting unit is provided.

  According to the first aspect of the present invention, the power supply unit is made common by supplying power to the lighting control device installed in the rotating blade mounting unit through the commutator and the conductive brush, and simultaneously with the rotation of the driving unit. It is possible to provide a portable electric fan having an afterimage display function capable of turning on the lighting unit. This makes it possible to display an afterimage on the rotation trajectory of the blades, and it is possible to enjoy a pattern and an image while being cool by using it at night in sports watching or indoors with little illumination. In addition, products suitable for novelty products in summer can be provided.

  According to the invention of claim 2, the commutator is composed of three commutator pieces which are three-pole commutators, the conductive brush is composed of a plus pole brush and a minus pole brush, and the lighting control device includes: By providing the three-phase full-wave rectifier circuit, a portable electric fan having a highly durable afterimage display function can be provided.

  According to the invention of claim 3, the lighting control device has a storage unit that stores the lighting and extinguishing patterns of the respective lighting bodies of the lighting unit, so that it is possible to enjoy the afterimage display by the picture and the image.

  According to the invention of claim 4, by providing the balance weight, it is possible to prevent the blade mounting portion from rotating eccentrically and to reduce the load on the commutator and the conductive brush.

  According to the fifth aspect of the present invention, since the light emitting diode or EL element having high durability against an impact or the like is disposed on the lighting body, the electric fan which is not easily damaged by vibration or impact accompanying rotation of the blades is provided. Can be provided.

  According to the invention of claim 6, by storing control information of a plurality of lighting bodies in advance in the storage unit, it is possible to enjoy various patterns and images by displaying afterimages, and the control information is automatically transmitted during operation. Can be switched and executed.

  According to the invention of claim 7, by storing control information of a plurality of lighting bodies in advance in the storage unit, it is possible to enjoy various patterns and images by the afterimage display, and the control information is manually stored during operation. Can be switched and executed.

  A portable electric fan having a power supply unit and a drive unit inside the gripping unit, a power switch in the gripping unit, and a flexible blade mounting portion provided at the tip of a rotating shaft rotated by the drive unit It has a plurality of blades, the blade mounting portion has a lighting unit that arranges a plurality of lighting bodies in the circumferential direction from the center of rotation, and has a lighting control device that controls lighting of the lighting body in the blade mounting portion, A commutator composed of three commutator pieces, which are three-pole commutators that are attached to a rotating shaft and supply power to the lighting control device, and power from a power supply unit built in the gripping unit in contact with the commutator. A portable electric fan having a plus pole brush and a minus pole brush supplied to the lighting control device, and by turning on the power switch, It was used to apply a voltage simultaneously to the positive pole brushes and negative pole brushes in contact with the Nmiteta.

  In addition, the lighting control device includes a three-phase full-wave rectifier circuit and a storage unit that stores a lighting and extinguishing pattern of each lighting body of the lighting unit. The lighting units arranged in a straight line and balance weights arranged at opposite positions around the rotation axis of the driving unit are provided, and the plurality of lighting bodies are light emitting diodes or EL elements.

  Hereinafter, an embodiment of a portable electric fan according to the present invention will be described in detail with reference to the drawings. First, the structure of the portable electric fan will be described with reference to FIGS. FIG. 1 shows the appearance of a portable fan according to the present embodiment. 2 is an exploded perspective view of the portable electric fan shown in FIG. FIG. 3 is a diagram illustrating the connection between the commutator and the conductive brush.

  The portable electric fan 10 includes a driving unit 52 having a rotating shaft 54 and a gripping unit 50 that can be gripped by a user, and a blade attachment in which three blades 30 are fixed to the rotating shaft 54 at an equiangular position. The blade mounting portion is rotated by rotation of the rotating shaft 54 of the driving unit 52 disposed in the gripping portion 50, and wind is generated by the three blades fixed to the blade mounting portion. The wind can be sent to the front of the electric fan 10.

  The blade attachment portion is constituted by a blade support member 14, a blade support cover 16, and a weight 28, and has a lighting control device 18 provided therein and has a commutator 26 at the rear end. The blade support member 14 is formed in a substantially cylindrical shape, and a blade support plate 15 inclined so as to fix each blade 30 in a screw shape is formed on the side surface of the cylinder. A bearing 32 penetrating the bottom surface of the cylinder is formed at the center of the bottom surface of the cylinder, and the bearing 32 is attached to the rotating shaft 54. Further, the commutator 26 is fixed to the tip of the bearing 32, and the commutator 26 rotates in the same manner as the rotating shaft 54 rotates. A substrate that is the lighting control device 18 is fixed around the bearing 32 in the vicinity of the bottom surface of the cylinder that is the blade support member 14.

  The blade 30 is formed of a substantially semicircular and flexible urethane sheet, and is fixed to the blade support member 14. Even when the user touches the blade 30 by mistake when the blade 30 is rotated with the rotation of the blade mounting portion, the flexible blade 30 is deformed, but the user is injured. There is no such thing.

  The lighting control device 18 controls lighting of the lighting unit 22 composed of a plurality of lighting bodies. Further, the lighting control device 18 is provided with a storage unit 20, and the storage unit 20 stores a plurality of lighting control information storing timings and lighting times for lighting the lighting units 22 composed of a plurality of lighting bodies. .

  Next, the lighting part 22 disposed on the blade support plate 15 of the embodiment is composed of five lighting bodies 24a to 24e arranged linearly on a rod-like substrate, and is arranged in the circumferential direction from the center of rotation. It is installed. The lighting body of the embodiment is a light emitting diode, but other light emitting elements such as an EL element may be provided in addition to the light emitting diode. Moreover, in the embodiment, the lighting color of the lighting body is such that red, green, and yellow are lit, but in addition to this, the lighting body that lights blue, white, and the like is lit. You can use it.

  Next, the blade support cover 16 is formed in a substantially hemispherical shape, and is fixed so as to cover the tip of the cylinder of the blade support member 14. A weight 28 is provided in the blade support cover 16. The weight 28 is disposed at a position facing the lighting part 22 of the lighting control device 18, and can maintain the balance of the blade mounting part on the rotating shaft 54.

  The commutator 26 is a three-pole commutator formed of a metal formed of a conductive material as shown in FIG. 3, and three commutator pieces curved so as to cover the bearing 32 are inserted into an equiangular position and fixed. Has been. The commutator 26 is in contact with a pair of plus pole brush 62 and minus pole brush 64 which are conductive brushes 60 disposed in the gripping portion 50. Further, a conductive cord is connected to the three commutator pieces of the commutator 26, and the cord is connected to the lighting control device 18. Further, since the three commutator pieces of the rotating commutator 26 are alternately brought into contact with the conductive brush 60, the lighting control device 18 has a three-phase full-wave rectifier circuit that converts electricity supplied from the three cords to DC. doing.

  Next, the grip 50 will be described. The grip portion 50 is formed of a resin material in an inverted L shape, and the inside thereof is hollow. The drive portion 52, the conductive brush 60 that becomes the plus pole brush 62 and the minus pole brush 64, the power source portion 68, and the power switch 70 is installed internally. A drive unit 52 and a conductive brush 60 are installed inside one of the L-shaped gripping units 50, and a power supply unit 68 is installed inside the other, and a power switch 70 is connected from the gripping unit 50. Projected.

  The drive unit 52 is a motor that rotates the rotary shaft 54. A drive unit cover 56 that covers one end of the drive unit 52 in the axial direction is formed. Further, a brush support portion 58 having a cylindrical shape in the axial direction of the rotating shaft 54 and having one opening and a hole formed in the center of the other bottom surface is disposed, and the side surface in the cylinder is electrically conductive so as to contact the commutator 26. The brushes 60 are disposed at positions facing each other. Similarly to the brush support portion 58, a brush cover 66 that is cylindrical and has one opening and a hole formed in the center of the other bottom surface is fixed so as to cover one of the brush support portions 58 that is open.

  The positive electrode brush 62 and the negative electrode brush 64, which are the conductive brushes 60, are metal formed of a conductive material formed in a flat plate shape, and are installed in the rotating blade mounting portion by contacting the commutator 26. It becomes possible to supply power to the lighting control device 18. In the embodiment, power is supplied into the rotating blades 12 using the commutator 26 and the conductive brush 60, but other mechanisms such as a slip ring may be used.

  The power switch 70 is provided so as to protrude from the side surface of the grip portion 50, and when the user presses the power switch 70, the drive unit 52 and the lighting control device 18 are activated. When the power switch 70 of the embodiment stops pressing on the power switch 70, the power switch 70 returns and the drive unit 52 and the lighting control device 18 stop. Each time the power switch 70 is pressed, the lighting unit 22 is controlled by switching the lighting pattern stored in the storage unit 20 in the lighting control device 18.

  A power supply unit 68 is provided in the grip unit 50. In the embodiment, the power supply unit 68 is a primary battery. In addition, a rechargeable secondary battery or the like can be used.

  By supplying power to the blade mounting portion through the commutator 26 and the conductive brush 60 as described above, a battery is not required in the blade mounting portion as in the case of a conventional portable fan that displays an afterimage, and in the blade mounting portion. The switch using the centrifugal force arranged in the above is also unnecessary. Therefore, it is possible to reduce the trouble of replacing the battery in the blade 12 like a portable fan that performs conventional afterimage display. In addition, the blade mounting portion rotates at a high speed such as 5000 RPM, and the commutator 26 and the conductive brush 60 have higher component accuracy and assembly accuracy than the slip ring, and have a very long operating life. The durability of the portable fan 10 of the present invention Improves. Further, the weight of the blade mounting portion can be reduced compared to the conventional portable fan that performs afterimage display, and the load on the drive portion 52 itself is reduced. Therefore, it is the wonderful portable electric fan 10 which reduces the load of the power supply part 68 simultaneously.

  Next, an example of the display pattern and the operation timing of the lighting body will be described with reference to FIGS. 4 and 5. FIG. 4 shows an example of an afterimage display pattern. FIG. 5 shows the switching timing of turning on and off the display body in order to display the afterimage display pattern in FIG. FIG. 4 shows the light emission position of each lighting body when the blade mounting portion rotates at a constant speed, and the light emission position of each lighting body is a hatched area.

  In the embodiment, the rotation speed of the blades 30 is substantially constant because the air resistance applied to the blades 30 and the torque of the motor are balanced by the rotation of the rotating shaft 54 of the driving unit 52. Therefore, the timing for turning on and off the lighting body only needs to turn on the time corresponding to the rotation speed of the blade 30.

  Hereinafter, an example in which the blade 30 is rotating at 600 revolutions per minute (the time required for the blade 30 to make one rotation is 0.1 second) will be described. Since the lighting bodies 24b to 24e blink at an angle of approximately 2π / 30, it is sufficient to energize approximately every 0.1 / 15 seconds.

  Moreover, although the lighting bodies 24b-24e of FIG. 4 are displayed on substantially dot shape, in order to display in this way, it is necessary to adjust the lighting time of a lighting body. In order to display the lighting bodies 24b to 24e in a substantially dotted shape, the angular velocity of the lighting body 24e located on the outermost periphery moves fast, so that the lighting body 24e appears to be lit in a substantially dotted shape. In this case, the lighting bodies 24b to 24d provided on the inner periphery all look like dots.

  When the sphere diameter of the light emitting diode which is the lighting body of the embodiment is 5 mm and the distance from the center of the rotation axis to the center of the lighting body 24e is 50 mm, even if the lighting body 24e moves about 1 mm, it looks substantially spherical. From this, the time for the lighting body 24e to move by 1 mm is that the circumference of the locus drawn by the center of the lighting body 24e is about 300 mm from 2πr, and the moving distance 1 mm of the lighting body center is 1/300 * 2π in angle. Since the time required for one rotation of the blade 30 is 0.1 seconds, it is 0.1 * 1/300 seconds, that is, 1/3000 seconds.

  That is, in order to light the lighting body provided at a position 50 mm from the rotation center of the blade 30 rotating at 600 rpm, the energization time may be set within 1/3000 seconds. Therefore, in order to turn on the lighting bodies 24b to 24e as shown in the drawing, it is sufficient to energize at intervals of 0.1 / 15 seconds every 0.1 / 15 seconds. The lighting body 24a may be lit for 0.1 / 15 seconds with an interval of 0.1 / 30 seconds.

  In this way, each time the blade 30 rotates once, the lighting body is turned on or off at the same position, so that the human eye emits light at a predetermined position due to an afterimage effect and is recognized as a pattern of a predetermined shape. It will be.

  6 to 8 exemplify display patterns other than those shown in FIG. 4, and in this embodiment, the lighting control device 18 can automatically switch the display patterns at regular intervals. Further, the display pattern is switched by sequentially outputting the display patterns stored in advance in the storage unit 20, but another method may be used in which the display patterns are randomly output.

  Although the present embodiment is configured as described above, the present invention is not limited to this, and various display forms can be taken by appropriately setting the lighting and extinguishing intervals.

It is a figure which shows the external appearance of the portable electric fan which is one Example of this invention. 1 is an exploded perspective view of a portable fan according to an embodiment of the present invention. It is a figure which shows the connection of the commutator used for the portable electric fan which is one Example of this invention, and a conductive brush. It is a figure which shows an example by which the afterimage display of the portable electric fan which is one Example of this invention is displayed. It is a figure which shows the timing of lighting of each lighting body of the afterimage display which concerns on FIG. 4 which is one Example of this invention. It is a figure which shows the example of the afterimage display of the portable electric fan which is one Example of this invention. It is a figure which shows the example of the afterimage display of the portable electric fan which is one Example of this invention. It is a figure which shows the example of the afterimage display of the portable electric fan which is one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Portable fan 14 Blade support member 15 Blade support plate 16 Blade support cover 18 Lighting control device 20 Storage unit 22 Lighting unit 24a Lighting body 24b Lighting body 24c Lighting body 24d Lighting body 24e Lighting body 26 Commutator 28 Weight 30 Blade 32 Bearing 50 Holding part 52 Drive part 54 Rotating shaft 56 Drive part cover 58 Brush support part 60 Conductive brush 62 Plus pole brush 64 Negative pole brush 66 Brush cover 68 Power supply part 70 Power switch

Claims (7)

  A portable electric fan having a power supply unit and a drive unit inside the gripping unit, a power switch in the gripping unit, and a flexible blade mounting portion provided at the tip of the rotating shaft rotated by the drive unit It has a plurality of blades, the blade mounting part has a lighting unit that arranges a plurality of lighting bodies in the circumferential direction from the center of rotation, and has a lighting control device that controls lighting of the lighting body in the blade mounting part, A commutator that is attached to a rotating shaft and supplies power to the lighting control device, and a conductive brush that contacts the commutator and supplies power from a power supply unit built in the gripping unit to the lighting control device. Portable electric fan with an afterimage display function.   In Claim 1, The said commutator is comprised by the three commutator piece which is a 3 pole commutator, the said electrically conductive brush is comprised by the plus pole brush and the minus pole brush, and the lighting control apparatus has 3 phase full wave A portable fan having an afterimage display function characterized by comprising a rectifier circuit.   The portable electric fan with an afterimage display function according to claim 1, wherein the lighting control device includes a storage unit that stores a pattern of lighting and extinguishing of each lighting body of the lighting unit.   4. The lighting device according to claim 1, further comprising a balance weight disposed at opposite positions around the rotation axis of the driving unit and the lighting unit arranged linearly in the circumferential direction. 5. A portable electric fan with an afterimage display feature.   The portable electric fan with an afterimage display function according to claim 1, wherein the plurality of lighting bodies are light emitting diodes or EL elements.   6. The lighting unit according to claim 1, wherein a plurality of lighting unit control information is stored in the storage unit in advance, and the lighting unit control information is automatically switched and executed during operation. A portable electric fan having an afterimage display function characterized by being a lighting control device.   7. The lighting device according to claim 1, wherein a plurality of lighting unit control information is stored in the storage unit in advance, and the lighting unit is turned on by manually switching and executing the lighting unit control information during operation. A portable electric fan having an afterimage display function characterized by being a control device.

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