JPH0984373A - Portable electrostatic charger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize an electrostatic charger easy-to-carry, improve opera tiveness and facilitate operation even in a narrow place. SOLUTION: A cage A consisting of a bottomed cylindrical insulated case 10 and a clamping part 11 fitted on its opening 10a stores a battery 13, a high- frequency oscillating circuit 15 which oscillates high frequency with its voltage applied, a high-frequency transformer 16 for generating high voltage at the secondary side by its oscillation, a rectifier circuit 17 for rectifying its a.c. high voltage, and a plurality of discharging pointers 18a, 19a to which the rectified high voltage is applied. The case 10 is formed with discharging holes 10c, 10e corresponding to the respective discharging pointers 18a, 19a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable charger that charges a charging target by generating a DC high voltage.
More specifically, the present invention relates to a portable charger which is suitable for use in a fine substance adsorption / collection device that adsorbs and collects fine substances such as fiber pieces and hair by static electricity.

[0002]

2. Description of the Related Art As an apparatus for picking up and absorbing fine particles using a charger, there is one described in JP-A-4-19539. FIG. 7 is a perspective view showing the fine matter adsorption / collection device.

This device for collecting and collecting fine particles collects footprints, hair, etc. that are hard to see with the naked eye left by a criminal who left at a crime scene. A plurality of discharge needles 2 are arranged at predetermined intervals in the axial direction, and a charging electrode bar 4 that can be operated with one hand using the base end portion as a grip portion 3 and a high-voltage cable 6 that connects this to the main body 1 are provided. And a flexible suction and collection sheet 7 made of an insulating material. Reference numeral 8 is a storage cylinder for storing and carrying the charging electrode bar 4, and 9 is a lid thereof.

In this device, the adsorption / collection sheet 7 is applied to the surface where the presence of fine particles is expected, a high DC voltage is applied to the discharge needle 2, and the grip portion 3 of the charging electrode bar 4 is gripped with one hand. , With this slightly separated from the adsorption collection sheet 7,
The sheet is used by moving along the surface while inducing static electricity on the surface.

[0005]

However, since the charging electrode bar 4 is a long one in which a large number of discharge needles 2 are oriented in the same direction and arranged in a line, it is suitable for charging a wide range. However, it is inconvenient to locally charge a narrow area.

Further, although the charging electrode bar 4 itself can be used with one hand, it is separated from the main body 1 having a built-in high voltage power source and is used by being connected to the main body 1 by a high voltage cable 6. , The charging electrode bar 4 and the main body 1 had to be carried at the same time, and the weight and size of these were not enough to consider portability, and there was room for improvement in operability and portability. .

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a portable charger which is compact in size so as to be conveniently carried and has improved operability and can be easily used in a narrow place.

[0008]

A portable charger according to the present invention comprises an insulating bottomed cylindrical case 10 and an opening 1 thereof.
In the exterior body A composed of the grip portion 11 attached to 0a,
A battery 13, a high-frequency oscillator circuit 15 that oscillates at a high frequency by applying the voltage, a high-frequency transformer 16 that generates a high voltage on the secondary side by the oscillation, a rectifier circuit 17 that rectifies the AC high voltage, and the rectifier A plurality of discharge needles 18a, 19a to which a high voltage is applied are stored. Further, the case 10 is formed with discharge holes 10c and 10e corresponding to the discharge needles 18a and 19a.

It is preferable that the discharge needles 18a and 19a are arranged in different directions for each required number of discharge needles. Also, the required number of the first discharge needles correspond to the discharge holes provided in the tip wall portion of the case, and the required number of the second discharge needles correspond to the discharge holes provided in the peripheral wall of the case. What you did is good. Further, it is preferable that the grip portion 11 is formed in a tubular shape with the tip closed, and the battery 13 is arranged therein.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. 1 is an external perspective view of a portable charger as one embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line I-I shown in FIG. 1, and FIG. 3 shows an electric circuit housed in an exterior body. It is a circuit diagram.

This portable charger is a single unit having a size and weight that can be easily operated and carried by grasping it with one hand, and is an opening 1 at the tip of an insulating cylindrical case 10 with the tip closed.
0a is attached with a cylindrical grip portion 11 having a closed base end,
These are used as an outer package A, and an electrical circuit described later including a power source is housed in the outer package A together with the circuit board 12 (FIG. 2).

The circuit board 12 is longer than the entire length of the case 10, and its rear end 12a is inserted into the grip portion 11. On this circuit board 12, a battery box 14 in which a battery 13 is loaded, a high frequency oscillation circuit 15, a high frequency transformer 1
6, double voltage rectifier circuit 17, each of the required number of discharge needles 1
First and second discharge needle groups 18, 19 composed of 8a, 19a
Is equipped with a battery 13 and a high frequency transformer 1
A switch SW for turning on / off the power source and a light emitting diode L which blinks in accordance with the oscillation of the high frequency oscillation circuit 15 are arranged between the switch 6 and the switch 6.

The high frequency oscillation circuit 15 is a high frequency transformer 1.
6 is connected to the primary side of the high frequency transformer 6, the self-excited oscillation occurs when the starting transistor 21 is turned on by the application of the DC voltage by the electrolytic capacitor 20 charged by the battery 13, and thereby the high frequency transformer 16 receives the high frequency. AC voltage is obtained. A connection jack for connecting an AC adapter (not shown) for converting the AC power supply to the DC power and supplying the same voltage as the battery 13 may be provided, as indicated by 21.

The voltage doubler rectifier circuit 17 has a known structure in which a diode D and a capacitor C are connected in series in several stages (six stages in the figure) to rectify and amplify the secondary voltage of the high frequency transformer 16 in several stages. The output end of this circuit is connected to the discharge needles 18a and 19a of the discharge needle groups 18 and 19 through resistors.

In the above circuit configuration, the electrolytic capacitor 20
When the high frequency oscillating circuit 15 oscillates with the discharge voltage of 1 to generate a high frequency output, this is boosted by the high frequency transformer 16. The output of the high frequency transformer 16 is rectified and amplified by the voltage doubler rectifier circuit 17, and the discharge needle group 1
8 and 19 are applied.

Each discharge needle 18a of the first group is connected to the circuit board 12
Are arranged in parallel with each other in the longitudinal direction at the tip portion 12b of each of the second groups, and the discharge needles 19a of the second group are arranged so as to hang down on the lower surface of the tip portion 12b of the circuit board 12 at a position forming a substantially triangular vertex. There is.

A substantially circular discharge hole 10c corresponding to each discharge needle 18a of the first group is formed in the tip wall 10b of the case 10, and the peripheral wall 1 of the case 10 is formed.
Near the tip of 0d, a substantially circular discharge hole 10e corresponding to each discharge needle 19a of the second group is formed. The tip of each discharge needle 18a, 19a has a corresponding discharge hole 10c,
It does not protrude from 10e and stays at its close range. The size of the discharge holes 10c and 10e is the discharge needle 18
It may be set as appropriate in consideration of the distances to a and 19a, the voltage applied to these, and the like.

The switch SW and the light emitting diode L described above.
In the peripheral wall 10d of the case 10 facing each other, a switch hole 10f and a diode hole 10 for projecting them outward.
g is formed. In addition, it is preferable that the switch SW does not protrude beyond the outer surface of the peripheral wall 10d so that the switch SW is not inadvertently operated.

A ring-shaped screw member 22 is fitted in the opening 10a of the case 10, and a female screw portion 22a (FIG. 2) screwed with the grip portion 11 is screwed on the inner surface thereof.

The grip portion 11 is made of metal, for example, and an external thread portion 11a screwed onto the screw member 22 is screwed on the outer peripheral surface of the opening edge portion thereof. At the center of the bottom wall 11b of the grip portion 11, a connection jack 2 for ground connection is provided.
3 is attached.

Further, since the battery 13 is arranged in the grip portion 11 and the grip portion 11 is formed of a metal having a large specific gravity, the center of gravity of the main charger is located near the grip portion 11 and the operability is improved. Is improving.

An example of use of the portable charger having the above structure will be described mainly with reference to FIG. First, the adsorption / collection sheet 7 is applied to a surface (for example, a floor surface) where the presence of fine particles is expected.

When the switch SW is turned on, the high frequency oscillating circuit 15 oscillates, and the light emitting diode L lights up accordingly. Further, a high DC voltage is applied to the discharge needle groups 18 and 19 through the high frequency transformer 16 and the voltage doubler rectifier circuit 17 to bring them into an operating state. The discharge from the discharge needles 18a and 19a is directed toward the outside of the case 10 to the discharge holes 10 respectively.
Since it is performed through the c and 10e, it is possible to provide the discharge concentration and directivity.

<When the main charger is used in a wide space> The grip portion 11 of the main charger is held by one hand, and the discharge hole 10e formed in the peripheral wall 10d of the case 10 is sucked and collected.
The horizontal posture (indicated by a chain double-dashed line in FIG. 6) facing the sheet is kept slightly separated from the suction and collection sheet 7, and the sheet is scanned along the surface while inducing static electricity.
The induced static electricity adsorbs a fine substance.

<When the main charger is used in a narrow space> When the adsorption / collection sheet 7 is near the wall, some parts cannot be charged when the main charger is kept in a horizontal position.
In this case, it is used as follows.

Grasping the grip portion 11 of the charger with one hand,
The discharge hole 10c formed in the front end wall 10b of the case 10 is maintained in an inclined posture (shown by a solid line in FIG. 5) toward the suction and collection sheet 7 and is slightly separated from the suction and collection sheet 7, Scan along the surface while inducing static electricity.

The present invention is not limited to the above-mentioned embodiments, but various modifications can be made within the scope of the invention.

In the above embodiment, the example in which the discharge needle is arranged toward the tip surface of the case and one of the peripheral wall has been described.
The pointing direction is not limited to this.

Although the holding part is made of metal, it may be made of plastic, wood, or the like.

In the present embodiment, the light emitting diode is caused to emit light by the oscillation of the high frequency oscillating circuit so that it is possible to judge whether or not the device is in the operating state. However, the light emitting diode or the like is not necessarily provided.

[0031]

According to the portable charger of the present invention, the discharge needle and the high-voltage power supply for applying a high DC voltage to the discharge needle are housed in a single outer casing. Further, the high-voltage power supply converts the voltage of the battery into a high frequency to boost the voltage, and then rectifies the voltage again. Therefore, even if a battery is used, a sufficiently high voltage can be obtained by the small high-frequency transformer and the rectifier circuit, and the built-in components themselves can be made small, so that the size and weight can be reduced. And by storing these in one exterior body, portability and operability can be improved.

The discharge is provided to the outside through the discharge hole provided in the case, so that the discharge can be concentrated and directed. Further, since all the circuits including the battery are incorporated in the outer package, it is not necessary to perform wiring every time it is used, and the handling is convenient. Further, since the discharge needle is housed in the case together with the power source, a storage cylinder for carrying is unnecessary.

According to the portable charger of the second aspect, the portable charging device can be used in a horizontal posture or a tilted posture depending on whether the place of use is wide or narrow. Therefore, the place of use is not limited. .

According to the portable charger of the fourth aspect, since the battery is housed in the grip portion, when replacing the dry battery, the grip portion can be easily removed from the case. It can be carried out. Furthermore, since the center of gravity can be located near the grip portion, operability can be improved.

[Brief description of drawings]

FIG. 1 is an external perspective view of a portable charger as an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II shown in FIG.

FIG. 3 is a circuit diagram showing an electric circuit housed in an exterior body.

FIG. 4 is a bottom view of the portable charger shown in FIG.

FIG. 5 is a front view showing the outer surface of the bottom wall of the case.

FIG. 6 is a perspective view showing a usage state of the portable charger of the present invention.

FIG. 7 is a perspective view showing a conventional fine matter adsorption / collection device.

[Explanation of symbols]

 10 Case 10a Opening 11 Grip 13 Battery 15 High Frequency Oscillation Circuit 16 High Frequency Transformer 17 Rectifier Circuit 18a, 19a Discharge Needle 10c, 10e Discharge Hole A Exterior Body

Claims (4)

[Claims] 1. An exterior body comprising an insulating cylindrical case having a closed tip and a grip portion attached to the base end of the case,
A battery, a high-frequency oscillation circuit that oscillates at high frequency when the voltage is applied, a high-frequency transformer that generates a high voltage on the secondary side by the oscillation, a rectifier circuit that rectifies the AC high voltage, and the rectified high voltage is applied A plurality of discharge needles are stored, and a discharge hole corresponding to each discharge needle is formed in the case, the portable charger. 2. The portable charger according to claim 1, wherein the plurality of discharge needles are oriented in different directions for each required number of discharge needles. 3. The required number of the first discharge needles correspond to the discharge holes provided in the tip wall portion of the case, and the required number of the second discharge needles are the second number.
3. The portable charger according to claim 2, wherein the discharge needle corresponds to a discharge hole provided on the peripheral wall of the case. 4. The portable charger according to claim 1, wherein the power source is housed in the grip portion.