JP2013036412A - Portable fan device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable fan device that achieves improvement in safety.SOLUTION: The portable fan device is configured as follows. A blower fan is covered with a casing while a suction port for sucking air and a blowout outlet for blowing out the air are provided in the casing. The portable fan device has a structure in which a wall of a housing part for housing internal heat-generating components is also used as a wall of a ventilation path in order to cool the heat-generating part.

Description

  The present invention relates to a portable air blower including a blower fan in a portable housing.

  A conventional portable blower is disclosed in Patent Document 1. In this portable blower, a suction port is opened on the back surface of a portable thin box-shaped housing, and an air outlet is opened on the front surface. An air passage that connects the suction port and the air outlet is provided in the housing, and a blower fan including an axial fan is disposed in the air passage. Further, a rotatable stand is provided on the side surface of the housing. When the stand is rotated and brought into contact with the installation surface of the table, the case can be set up on the table by supporting the stand.

  When the blower fan is driven in a state where the casing is erected on the installation surface of the table by the stand, outside air flows into the air passage from the suction port. At this time, the rear surface of the casing is inclined to face the installation surface, and an air flow is sent obliquely upward from the front outlet toward the user's head and the like. Thereby, coolness can be obtained easily outdoors or indoors.

JP 2008-57519 A

  However, according to the above-described conventional portable blower, since the blower fan is exposed, there is a possibility that foreign matter enters the rotating portion and damages the device. In addition, no consideration is given to a control unit including a control component for driving and controlling a blower fan provided in the housing, and heat generation of a battery or the like. Furthermore, since the blower fan can be directly seen from the outside, there is a problem that it is not beautiful in appearance.

  In order to solve the above problems, the present invention provides a portable blower device having a blower fan, a housing that houses the blower fan, a suction port that sucks air into the housing, and a blower port that sends out the sucked air. A concave portion is provided in the housing to form a component storage portion, and the wall of the component storage portion is configured to serve as a separation wall that separates the interior of the housing into a ventilation path and a component storage portion.

  Here, the casing can be formed with a smooth curved appearance, is generally a rectangular parallelepiped, can be provided with a suction port in the lower part of the main body that is not directly visible from the outside, and can be provided with a blower outlet on the upper surface of the main body. Thereby, it can be made beautiful in appearance.

  On the other hand, the heat generated by the battery, control unit, blower fan, etc., which is a problem due to the case being covered, is actively cooled by these members, thereby suppressing the thermal influence and the case. The negative side by covering was compensated.

  According to the present invention, since the battery, the control unit, the blower fan and the like are cooled, overheating is prevented and continuous use until the power of the battery disappears is enabled.

  Moreover, since it was made into the structure which is not influenced by the use form, air blowing performance can fully be exhibited even when it is used on a desktop or suspended from the neck.

  Further, if the appearance portion is a casing having a smooth curve, the aesthetic appearance is achieved because the blower fan is housed inside.

The external view which looked at the portable air blower of this invention from the front. The external view which looked at the portable air blower of this invention from the back. The external view which looked at the portable air blower of this invention from the upper surface. The structure figure which removed the lid | cover of the back surface of the portable air blower of this invention. The structure figure which removed the front case and the ventilation fan of the portable air blower of this invention. Sectional drawing which shows the internal structure of the portable air blower of this invention. The external appearance schematic diagram of the ion generator used for this invention. The external appearance schematic diagram of the battery used for this invention. The external appearance schematic diagram of the ventilation fan used for this invention. The external appearance schematic diagram of the control board of this invention. The external appearance schematic diagram of the partition panel of this invention.

  Embodiments of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 is a front view showing a portable blower according to this embodiment. As an example, the portable blower 1 includes a thin box-shaped housing 2 having a substantially rectangular shape in front view, which is formed in a portable size of about 100 mm long × 80 mm wide × 30 mm thick. In the figure, a blow-out port 7, which will be described in detail later, is provided at the upper end portion of the housing 2, and the suction port 6 is hidden at the lower end portion in the state of FIG. 1. As shown in FIG. 2, the suction port 6 is provided in the lower part on the back side.

  A display unit 4 is provided on the front case 2 a that forms the housing 2. The display unit 4 displays operation information of the portable blower 1 using a display unit such as an LED. It is also preferable to display the operation status of the apparatus, the operation time, the accumulated operation time, and the remaining battery level using display means such as an LED or a liquid crystal.

  Next, FIG. 2 is the figure which looked at the portable air blower 1 from the back, and has shown the state which closed the leg 3. FIG. The rear case 2b facing the front case 2a constitutes a casing 2 that forms an external appearance part by fitting with the front case 2a. There is a lid 2g at the center of the back case 2b. The lid 2g is removed from the back case 2b to cover the built-in ion generator 18 and battery 19 in a replaceable manner.

  The leg 3 is a substantially U-shaped bar member pivotally supported on both side surfaces of the housing 2 at the center of the main body with the direction connecting the air outlet 7 and the suction port 6 as the longitudinal direction. A storage portion 2f formed as a groove-shaped recess is provided in 2b for storage. The leg 3 is stored in the lower part in the vertical direction when not in use. By providing the pivot shafts of the legs 3 at substantially the center left and right in the vertical direction of the housing 2, the legs 3 can be rotated at an angle of less than 180 ° when viewed from the stored state. The legs 3 can be held at a plurality of opening angles, and the portable air blower 1 can be installed by standing the casing 2 on the installation surface of the table by supporting the legs 3 with the legs 3 open. it can. Therefore, the leg 3 constitutes a support portion that supports the housing 2 when the portable air blower 1 is installed on the installation surface of the tabletop.

  At the lower end of the rear case 2b at the lower portion of the housing 2, a leg storage part 2f is continuous in the width direction of the back case 2b, and an outside air inlet 6 is provided so as to be continuous with the storage part 2f. Form. A net for preventing dust from being sucked in is attached to the suction port 6. The suction port 6 is always visible from the outside on the back case 2b side when the leg 3 is opened and stored, and can suck in the outside air without being affected by the opening and closing of the leg 3.

  The front case 2a and the back case 2b constituting the housing 2 are curved in the vertical direction and the horizontal direction, and a curved surface having a large radius is given to a portion corresponding to a ridge line of a normal housing. Therefore, the portable air blower 1 does not have a clear ridge line unlike a normal cuboid casing. With this configuration, the housing 2 has a shape in which the thickness direction of the center portion is greatly expanded.

  FIG. 3 is a view as seen from the upper surface of the portable blower 1, and the air outlet 7 is opened on the upper surface of the outer appearance formed by the front case 2 a and the back case 2 b. The opening is provided with a blowing grid 2d, and the center of the outlet 7 which is the opening is formed so as to be largely deviated toward the front case 2a. When the casing 2 is formed with a curved surface having a large radius and the air outlet 7 is biased toward the front case 2a, the portable blower 1 is placed directly on a desk or the like without using legs. When suspended from the neck and used, a distance is ensured between the contact surface with a desk or a human body and the center of the outlet, and airflow is sent out satisfactorily.

  Referring to FIG. 1, a power switch 5 is provided on the right side surface 2 c of the portable blower 1. When the power switch 5 is set to the [ON] position, the blower fan 17 and the ion generator 18 are energized to start operation. The display unit 4 displays operation information and operation information such as the ion generation status of the ion generator and the remaining battery status.

  FIG. 4 is an external perspective view of the portable blower 1 as seen from the back, and shows a state where the back cover 2g, the ion generator 18 and the battery 19 are removed. The back case 2b is provided with a lid 2g so as to be detachable, and the interior corresponding to the lid 2g is recessed to the front case 2a side, and an isolation chamber 22b for storing the ion generator 18 near the blowout port 7, Next to this, an isolation chamber 22c for storing the battery 19 is formed. Holes 221a and 221b for discharging ions generated by the ion generator are provided in the bottom wall of the rear case 2b of the isolation chamber 22b that houses the ion generator 18. The ion generator 18 is fitted in the ion discharge holes 221a and 221b so as to correspond to the ion discharge portions 18a and 18b of the ion generator 18 shown in FIG. The bottom wall of the back case 2b of the isolation chamber 22b constitutes a part of the air passage 8 described in detail later.

  A terminal portion 15a is exposed in the isolation chamber 22b and is connected to the control board 15 in contact with the terminal 18d of the ion generator 18 shown in FIG. The terminal portion 15a is also exposed in the isolation chamber 22c, and contacts the terminal 19b on the side surface of the main body portion 19a of the battery 19 shown in FIG.

  FIG. 5 is a view showing the internal structure of the bottom wall of the rear case 2b from which the front case 2a, the blower fan 17, and the partition panel 22 (shown in FIG. 6) are removed. On the bottom wall of the isolation chamber 22b provided in the back case 2b, three plate-shaped airflow guides 221c are installed on the surface on the air passage 8 side toward the inside of the housing. The airflow guide 221c has an effect of correcting the deviation of the blown airflow A2 (see FIG. 6) in the upper right direction on the paper surface because the blower fan 17 is a turbo fan. The inclination of the airflow guide 221c intersects the airflow sending direction. In FIG. 5, a shutter 7 a is shown inside the air outlet 7. The shutter 7 a opens and closes the air outlet 7 in conjunction with the power switch 5.

  6 is a cross-sectional view taken along line AA showing the internal structure of the portable blower 1 cut along the center line in FIG. A control board 15 on which the control circuit of the portable blower 1 is mounted is attached to the inside of the isolation chambers 22b and 22c provided in the back case 2b. As shown in FIG. 4, each of the isolation chambers 22 b and 22 c is provided with a notch portion, and a terminal portion 15 a provided on the control board 15 is fitted into the notch portion. Two terminal portions 15 a are installed in the isolation chamber 22 b for storing the ion generator 18, and one terminal portion 15 a is installed in a position where the terminal 19 a can be connected to the isolation chamber 22 c for storing the battery 19. The ion generator 18 and the battery 19 housed in the isolation chambers 22b and 22c, respectively, are connected to the control board 15 via the terminal portion 15a. The shape of the control board 15 is shown in FIG. 10 as a schematic diagram. Components are mounted on both sides of the control board 15, and a terminal portion 15a is mounted on the surface facing the back case 2b.

  Next, FIG. 7 shows a schematic external view of the ion generator 18 used in the present invention. The ion generator 18 disposed in the isolation chamber 22b has a plurality of ion emitting portions 18a and 18b facing the air passage 8. Each ion emission portion is provided with a counter electrode 181 and a needle-like discharge electrode 182. The main body portion 18c of the ion generator 18 incorporates a high-voltage electricity generation circuit, and operates by receiving power supply from the battery 19 through the terminal portion 15c from the terminal 18d provided on the side surface.

A high voltage consisting of an AC waveform or an impulse waveform is applied to the discharge electrode by the high voltage electricity generation circuit. As described above, the ion generator 18 has a plurality of discharge electrodes, a positive voltage is applied to one electrode, and ions generated by ionization are combined with moisture in the air to form mainly H ⁺ (H ₂ O) m. Positive cluster ions consisting of A negative voltage is applied to the other electrode, and ions generated by ionization are combined with moisture in the air to form negative cluster ions mainly composed of O ₂ ⁻ (H ₂ O) n. Here, m and n are arbitrary natural numbers.

The positive ions H ⁺ (H ₂ O) m and the negative ions O ₂ ⁻ (H ₂ O) n are simultaneously sent in the air to aggregate and surround them on the surface of airborne bacteria and odorous components. Then, as shown in the formulas (1) to (3), the active species [.OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are generated on the surface of floating bacteria and odor components. Destroy them.

H ⁺ (H ₂ O) m + O ₂ ⁻ (H ₂ O) n → OH + 1 / 2O ₂ + (m + n) H ₂ O (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 OH + O ₂ + (m + m ′ + n + n ′) H ₂ O (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m ′ + n + n ′) H ₂ O (3)
In the above formula, m ′ and n ′ are arbitrary natural numbers.

  A blower fan 17 is provided between the control board 15 and the front case 2a. The blower fan 17 is stopped by a boss standing from the back case 2b via a vibration isolating rubber. As shown in FIG. 9, the blower fan 17 is a double-sided suction type turbo fan, and two intake ports 17 a (one lower surface) opening in the axial direction of the housing 17 b are respectively arranged in the thickness direction of the housing 2. . The housing 17b has a substantially rectangular parallelepiped shape, and is provided with an air outlet 17c on one side surface and a lid on the other three side surfaces.

  In addition, an air passage 8 is formed inside the front case 2a by being covered with a partition panel 22 (see FIG. 11) that connects the blower fan 17 and the outlet 7. The blower fan 17 of FIG. 9 is inserted into the opening 221b of the partition panel. At this time, the blower outlet 17c of the blower fan 17 is arranged in the direction of the blower guide 221a. The partition panel 22 is a wall body having a substantially U-shaped cross section, and is combined with the bottom wall of the isolation chamber 22 b to form the air passage 8. In the air passage 8, the airflow guide 221 c described above protrudes and is installed to guide the airflow from the blower fan 17 to the air outlet 7.

  In such a structure, when the portable blower 1 of the present invention is operated, the blower fan 17 is configured to pass the air A1 sucked from the suction port 6 of the housing 2 through the gap between the control board 15 and the blower fan 17. The air is supplied through two paths, a path passing through a gap 25 formed between the front case 2a and the blower fan 17. As the air blows, one of the suction paths passes through the control board 15 and the isolation chamber 22c to cool each of the control board 15 and the bottom wall of the isolation chamber 22c and indirectly cool the battery 19. The other suction path passes through the side of the control board 15 and reaches the gap 25 with the front case to cool the control board 15.

  The air A2 sent from the blower fan 17 cools the bottom wall of the isolation chamber 22b and indirectly cools the ion generator 18 when flowing through the air passage 8. As described above, the airflow guide 221 c for rectifying the blown airflow is provided on the bottom wall of the isolation chamber 22 b toward the air passage 8. The airflow guide 221c is a plurality of plates erected on the bottom wall of the isolation chamber 22b, functions to increase the surface area of the isolation chamber 22b, and can efficiently cool the isolation chamber 22b.

  Next, the structure of the leg 3 will be described. The leg 3 is pivotally supported by the housing 2 by a hinge mechanism. Although the hinge mechanism of the leg 3 is omitted in the drawing, it includes a gear and a spring. Gears as a latch mechanism are integrally provided at both left and right ends of the U-shaped leg 3 and are inserted into the left and right through holes provided on both side surfaces of the back case 2b so as to be rotatably supported. . The gear is formed with a plurality of teeth around the entire circumference of both end shaft portions of the leg 3. A shaft is disposed between adjacent teeth of the gear. One end of the spring is hooked to a shaft and the other end is hooked to a boss standing on the rear case 2b, and constitutes a biasing means for biasing the shaft in a direction of pressing the shaft against the gear.

  The gear is rotated integrally by the rotation of the leg 3, and the shaft moves in the direction of the gear tip against the biasing force of the spring. Then, the relative movement of the shaft between the teeth in the circumferential direction allows the opening / closing angle of the leg 3 to be restricted, and coupled with the shape of the leg storage portion 2f of the housing 2, the leg 3 is appropriately opened with an opening of less than 180 °. Can be arranged at any angle. Thereby, when the leg 3 is placed on the installation surface of the table, it is possible to maintain a posture in which the back case 2b of the housing 2 is inclined to face the installation surface.

  Moreover, when the leg 3 is opened wide and the back surface of the housing 2 is directed to the desk, the posture of the portable blower 1 can be kept low, and the airflow can be blown out at an elevation angle of about 30 ° to 40 °. Furthermore, if the legs 3 are opened narrowly so that the air outlet 7 is lowered, the airflow can be blown downward, and the bed 3 is placed on the bed headboard (plate on the bed head) at bedtime. The airflow can be sent to the user.

  Next, the suction port 6 will be described. The suction port 6 is formed in the lower end part of the back case 2, as shown in FIG. A recess-shaped storage portion 2f connected to a groove shape for storing the leg 3 is formed at the lower end portion and both end portions of the back case 2b. Thereby, the leg 3 comes to follow an outer wall surface so that the external appearance of the back case 2b may not be impaired when accommodated.

  In addition, a lid 2g can be attached to and detached from the rear case 2b so that the isolation chambers 22b and 22c are exposed at the portion facing the isolation chambers 22b and 22c described above so that the ion generator 18 and the battery 19 can be replaced. Is provided. Even when the lid 2g is attached to the back case 2b, a gap is formed between the end surface of the leg 3 stored in the storage portion 2f and the lower end surface of the lid 2g, and the leg 3 is stored in the storage portion 2f ( 5), the air inlet A6 is always secured without closing the suction port 6. Further, the gap is provided over the full width of the leg 3, and the opening area does not change even when the leg 3 is opened or closed.

  Here, the suction port 6 is provided continuously at the lower end of the back case 2b and at the bottom of the groove-shaped storage portion 2f. Therefore, as shown in FIG. 6, the suction port 6 is formed in a portion that is recessed by one step with respect to the installation surface of the back case 2b. Therefore, even if the lid 2g is placed on the installation surface as shown in FIG. 6, the suction port 6 is not blocked. Therefore, the airflow A1 at the suction port 6 can always be secured. As a result, the blowing performance of the blower fan 17 is ensured both when the leg 3 is used and when it is not used.

  In such a configuration, the operation state will be described with reference to FIG. When the power switch 5 is turned [ON], the operation is started. By the operation of the blower fan 17, air A <b> 1 is sent into the housing 2 from the suction port 6 provided in the back case 2 b. The air that has passed through the blower fan 17 and circulated in the air passage 8 circulates in the air passage 8 as indicated by an arrow A2, and includes ions generated by the ion generator 18. And as shown to arrow A3, the airflow containing a positive ion and a negative ion is sent toward the upper user's head etc. from the blower outlet 7. FIG. Thereby, while being able to obtain coolness easily outdoors or indoors, disinfection around a user and odor removal can be performed.

  Furthermore, the portable air blower 1 of the present invention is provided with a mounting portion 2h for attaching a neck strap to the outside of the housing 2 and on the upper part of the rear case 2b. Can be carried by hanging from In a state where the neck strap is used, the length of the neck strap is set so that the portable blower 1 is positioned around the upper abdomen from the user's chest. Although it is self-evident, the portable blower 1 at this time is in a posture in which the air outlet 7 is directed almost directly above. When the power switch 5 is turned on while the portable blower 1 is suspended from the user's neck or held, the outside air is guided to the suction port 6 through the gap between the user and the housing 2. . Then, an air flow containing ions is sent upward from the blowout port 7. When walking or sitting, the position of the person's face is slightly forward compared to the position of the person's chest, so it is advantageous that the air outlets 7 are biased to the front of the housing 2. . Thereby, while carrying around the portable air blower 1, coolness can be obtained, and sterilization and odor removal around the user can be performed by the action of positive and negative ions.

  Further, a shutter 7a that operates in conjunction with the operation switch 5 is provided at the air outlet 7 so that foreign matter does not enter. When the portable blower 1 is used over the neck, it is predicted that the air outlet 7 faces upward. Therefore, when a user eats and drinks, food fragments and beverages may spill out and fall into the outlet 7 unfortunately. This is to prevent such unforeseen events.

  The operation switch 5 is provided with a protrusion on the back surface that penetrates the back case 2b. By operating this arm (not shown) of the shutter 7a, the protrusion 7 moves the position of the shutter 7a toward the back case 2b. . When blowing, the shutter 7a moves to the front of the isolation chamber 22b provided in the back case 2b so as not to block ventilation.

  In the above embodiment, only the negative ions may be emitted by the ion generator 18. Thereby, a user's relaxation effect can be acquired.

  According to the present invention, it can be used for a portable blower or a portable fragrance device provided with a blower fan in a portable casing.

DESCRIPTION OF SYMBOLS 1 Portable air blower 2 Case 2a Front case 2b Rear case 2c Side cover 2g Lid 22b, 22c Isolation room 3 Leg 4 Display part 5 Power switch 6 Suction port 7 Outlet 8 Air passage 17 Blower fan 18 Ion generator 19 Battery 22 Partition panel 25 Clearance

Claims (4)

In a portable air blower having a blower fan, a housing that houses the blower fan, a suction port that sucks air into the housing, and a blower port that sends out the sucked air,
A portable blower characterized in that a concave portion is provided in the housing to form a component storage portion, and a wall of the component storage portion also serves as a separation wall that separates the inside of the housing into a ventilation path and a component storage portion.   The portable blower according to claim 1, wherein the separation wall forms a part of a blower path that connects the blower outlet of the blower fan and the blower outlet of the housing.   The portable air blower according to claim 2, wherein an airflow guide for guiding an airflow blown by the blower fan is provided on a side of the separation path of the separation wall.   The component housed in the component storage unit is a heat generating component, and the heat generating component is cooled by cooling a wall of the component storage unit when the blower fan is operated. 4. The portable air blower according to claim 3.