KR20180105485A - Metal plate based ventilation member and electric·electronic device ventilation filter including thereof - Google Patents

Abstract

The metal-plate-shaped ventilation member and an electric and electronic device ventilation filter including the same are provided. A ventilation member for a ventilation filter according to an embodiment of the present invention is a ventilation member for a ventilation filter which transmits gas discharged from the inside of the housing of an electrical and electronic device to the outside and blocks liquid flowing from the outside of the housing to the inside. The ventilation member is a metal member having a plate-like shape, and has ventilation holes which are penetrates the ventilation member, has an island shape, are aligned to have an average diameter of 0.2 μm to 10 μm. According to this, a condensation preventing effect is excellent. Damage due to fluid flow can be prevented. The life of the ventilation member can be prolonged. Electromagnetic waves can be shielded, and at the same time, the sound wave transmission effect is excellent when it is applied to an acoustic device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a metal plate-type ventilation member and an electric / electronic appliance ventilation filter including the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation member in the form of a metal plate, and relates to a ventilation member and an electric / electronic appliance ventilation filter including the ventilation member.

Electricity and electronic appliances which generate a lot of heat according to use of the product increase the pressure when high heat is generated inside. On the other hand, when the operation is stopped and the temperature is lowered, the internal pressure is lowered and the outside air is strongly sucked. As the pressure increases or decreases repeatedly, the sealing of the electric / electronic appliance is broken, and contaminants such as moisture, rainwater, or dust are permeated into the outside. At this time, a condensation phenomenon occurs in the electric / electronic device due to inhaled moisture. Water vapor generated by condensation can not be exhausted out of electric and electronic devices, and it damages parts including electronic circuits in electric and electronic devices, leading to shortening of life of products.

In order to prevent the above-described phenomenon, a housing is generally provided in the electric / electronic apparatus to accommodate a component or a control board. The housing includes a hole formed at one end thereof with a through-hole, and the hole includes a ventilation filter fitted with a ventilation member. Thus, it is possible to mitigate pressure fluctuations and changes in the electric / electronic device or to ventilate the inside of the housing, thereby securing the air permeability of the inside and outside of the housing and preventing foreign matter from entering the inside of the housing.

Korean Patent Laid-Open Publication No. 1996-0007424 (hereinafter referred to as "prior patent") relates to a structure of a high permeability nonwoven fabric having excellent elasticity, wherein the ventilating member of the prior patent includes a low melting point polymer fiber, Woven fabric having a multi-layer structure. However, since the prior patent is made of polymer fibers, it has a high probability of being damaged by the flow of fluid, and has a short life. Since electromagnetic waves pass through, the human body caused by electromagnetic waves and the damage of electric / electronic devices can not be prevented.

Prior Art: Korean Patent Publication No. 1996-0007424

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an air conditioner having an excellent effect of preventing condensation from occurring due to internal heat of an electric / electronic device, And at the same time, it is an object of the present invention to provide a ventilating member in the form of a metal plate which is excellent in sound wave transmission effect when applied to an acoustic apparatus, and an electric / electronic appliance ventilating filter including the ventilating member.

According to an aspect of the present invention, there is provided a ventilation member in the form of a metal plate, which permeates the gas discharged from the inside of the housing of the electric / electronic apparatus to the outside, Shut off for liquid. The ventilation member is a metal member having a plate-like shape, and is provided with a plurality of ventilation holes penetrating the ventilation member, arranged in an island shape, and having an average diameter of 0.2 탆 to 10 탆.

In addition, the thickness of the ventilation member for the ventilation filter may be 3 탆 to 50 탆.

In addition, the vent holes may be formed by inclining at a predetermined angle with respect to the thickness direction of the ventilation member. At this time, the angle may be 10 ° to 50 °.

In addition, the ends of the vent holes may be formed so as to be smoothly connected to the inner circumferential surface of the vent hole and the surface of the vent member.

Another aspect of the present invention provides a sounder venting filter. The acoustic device ventilation filter includes the ventilation member for the ventilation filter of the present invention.

Another aspect of the present invention provides a ventilation filter for preventing ignition of a battery. The ventilation filter for preventing the ignition of the battery includes the ventilation member for ventilation filter of the present invention.

According to the metal plate-shaped ventilation member of the present invention and the electrical / electronic device ventilation filter including the same, the effect of preventing condensation due to the internal heat of the electric / electronic device is excellent, and the life of the ventilation member And can shield electromagnetic waves, and at the same time, when applied to an acoustic device, the sound wave transmission effect is excellent.

1 is a plan view of a ventilation member for a ventilation filter according to an embodiment of the present invention.
2 is a cross-sectional view of a ventilation member 100 for a ventilation filter according to an embodiment of the present invention.
3 is a cross-sectional view of a ventilation member 100 for a ventilation filter according to an embodiment of the present invention.
4 is an exploded perspective view of an electric / electronic device ventilation filter according to an embodiment of the present invention.
FIG. 5 is a cross-sectional view of a part of an air filtering filter of an electric / electronic device according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

1 is a plan view of a ventilation member for a ventilation filter according to an embodiment of the present invention.

Referring to FIG. 1, a ventilation member 100 for a ventilation filter according to an embodiment of the present invention permeates the gas discharged from the interior of the electrical / electronic apparatus housing to the outside, As well as the role of the other. At this time, the ventilation member has a plate shape and a plurality of ventilation holes 1 are provided. Accordingly, the pressure balance between the inside and the outside of the electric / electronic device is induced, and the effect of preventing the occurrence of condensation due to the internal heat of the electric / electronic device is excellent.

The ventilation filter vent member 100 is a plate-shaped metal member and may include any one of nickel (Ni), copper (Cu), and zinc oxide (ZnO). As the ventilation member is a metal member, the strength of the ventilation member is improved and the electromagnetic wave is shielded, thereby preventing the electric / electronic equipment from being damaged due to electromagnetic waves. In addition, it is possible to prevent the ventilation filter ventilation member 100 from being damaged due to the flow of the fluid passing through the ventilation filter ventilation member 100, so that when applied to an electric / electronic appliance ventilation filter, It can extend the life span and can be used semi-permanently. At the same time, electromagnetic waves are shielded to prevent harm to human body caused by electromagnetic waves and damage of electric / electronic devices. In addition, since the porous material does not accumulate such as a membrane and has a simple structure with no complicated ventilation path, the sound wave transmission effect is excellent. Accordingly, the sound quality of the acoustic apparatus can be improved when applied to the acoustic device ventilation filter.

Further, a plurality of ventilation holes 1 are formed through the ventilation member 100 for the ventilation filter, arranged in an island shape and arranged and having an average diameter of 0.2 탆 to 10 탆. The vent holes 1 may have the form of a circular, polygonal, or polygonal mesh.

When the average diameter of the vent holes is in the range of 0.2 탆 to 10 탆, the gas can pass freely but can not pass in the case of liquid or solid, thereby inducing pressure equilibrium between the inside and the outside of the electric / It is possible to prevent damage due to external moisture or pollutants. Further, when the above-mentioned average diameter range is satisfied, when the ventilation member for a ventilation filter is applied to an acoustic apparatus, the sound wave transmission effect is excellent and the electromagnetic wave shielding effect is excellent.

Equation (1) is a mathematical expression for a cut-off frequency (f _c ) which is a frequency limit value of a shieldable electromagnetic wave.

[Equation 1]

f _c = c / lambda _c

Where f _c is the cutoff frequency in Hz, c is the speed of light in m / s, and λ _c is the shielding wavelength in m.

At this time, if the shape of the vent hole (1) circular shielding wavelength (λ _c) is 3.412r (r is radius of the opening), and shield the wavelength (λ _c) if the shape of the vent hole (1) is rectangular 2a ( and a is the maximum length of the opening).

If the cutoff frequency is calculated on the assumption that the shape of the vent hole 1 is circular, it is possible to shield electromagnetic waves of about 439624.9 GHz or less when the diameter is 0.2 탆, and electromagnetic wave shielding of about 8792.5 GHz or less when the diameter is 10 탆 Is possible. That is, it can be seen that the electromagnetic wave of 8792.5 GHz or less and the electromagnetic wave of 439624.9 GHz or less can be shielded when the diameter of the vent hole 1 of the present invention is 0.2 탆 to 10 탆. It is also seen that as the diameter of the vent hole 1 becomes smaller, the frequency band of the shieldable electromagnetic wave becomes wider.

However, if the diameter of the ventilation hole 1 is less than 0.2 탆, the permeability of the vent hole 1 is low, and the gas generated in the electric / electronic device may not pass smoothly, and sound quality may be deteriorated when applied to an acoustic apparatus . If the diameter of the vent hole (1) is more than 10 mu m, wet mist may enter from the outside of the electric / electronic device, the condensation preventing effect may be lowered, the contaminant may pass, and the electromagnetic wave shielding effect may be lowered .

On the other hand, the thickness of the ventilation member 100 for a ventilation filter may be 3 탆 to 50 탆.

2 is a cross-sectional view of a ventilation member 100 for a ventilation filter according to an embodiment of the present invention. Referring to FIG. 2, the vent hole 1 may be inclined at a predetermined angle with respect to the thickness direction of the ventilation member 100 for the ventilation filter. In this case, the electromagnetic wave shielding effect can be further improved. Specifically, the extension line A 'in the direction of the vent hole 1 with respect to the extension line A in the thickness direction has a predetermined angle?.

At this time, the ventilation holes 1 may be inclined at an angle of 10 to 50 with respect to the thickness direction of the ventilation member 100 for the ventilation filter. In this case, there is an effect of excellent electromagnetic wave shielding effect and air permeability of electric / electronic devices and excellent effect of attaining sound wave when applied to acoustic equipment. When the ventilation hole 1 is inclined at less than 10 degrees with respect to the thickness direction of the ventilation filter 100, the electromagnetic wave shielding effect of the electrical / electronic device may be deteriorated. If the ventilation hole 1 is more than 50 degrees, Electrical and electronic device shielding effect may be reduced. In addition, when applied to an acoustic device, gas generated inside the acoustic device may not pass smoothly, and sound quality may be deteriorated due to poor sound transmission.

3 is a cross-sectional view of a ventilation member 100 for a ventilation filter according to an embodiment of the present invention. 3, the end of the ventilation hole 1 may be formed to be smooth so that the inner circumferential surface of the ventilation hole 1 and the surface of the ventilation member 100 for the ventilation filter are smoothly connected to each other. In this case, it is possible to prevent foreign matter from being caught in the vent hole (1), thereby preventing clogging of the vent hole.

The ventilation member 100 for a ventilation filter can be used for a large-sized LED lamp, a searchlight, a lighthouse beacon, a traffic control device, a CCTV, a solar device, a communication device, a radar, It can be used for facilities where temperature difference with the outside is large. It can be applied to portable devices such as a speaker, a smart phone, a camera, and a speaker, and electric and waterproofing machines such as automobiles and armored vehicles.

Next, an electric / electronic device ventilation filter according to an embodiment of the present invention will be described.

FIG. 4 is an exploded perspective view of an electric / electronic device ventilation filter according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view of a part of a ventilation filter of an electric / electronic device according to an embodiment of the present invention.

Referring to FIG. 4, the electrical / electronic apparatus ventilation filter according to an embodiment of the present invention includes the ventilation member 100, the body 200, and the cap 300 for the ventilation filter of the present invention.

The ventilation member 100 for aeration filter is a ventilation member for a ventilation filter according to the present invention wherein the ventilation member is a metal member having a plate shape and is formed through the ventilation member and arranged in an island shape and having an average diameter A plurality of ventilation holes 1 having a diameter of 0.2 to 10 μm are provided. The ventilation member 100 for a ventilation filter will be described in detail with reference to the above description of the ventilation member for a ventilation filter.

The body 200 is formed with a central hole 210 through which a hole formed at an arbitrary position on an outer surface of a housing (not shown) of the electric / electronic apparatus is communicated with the center hole 210, The filter vent member 100 is fixedly disposed. The body 200 may be coupled to the cap 300 by various coupling shapes. At this time, the lower end of the cap 300 contacts the inlet 220 and the cap 300 when the body 200 and the cap 300 are coupled to the end of the body 200 coupled to the cap 300, And a flange 230 protruding outward from the outer surface of the body 200. The flange 230 may further include an O-ring 240 that can seal the joint when the electrical / electronic device vent filter is coupled to the electrical / electronic device housing.

5, a ring-shaped adhesive member 101 is disposed between the flange portion 230 of the body 200 and the ventilation member 100 for the ventilation filter, The filter vent member 100 can be adhered and fixed. At this time, the adhesive member may include an acrylic resin adhesive.

4, the cap 300 includes a ventilation member 100 fixed to the inlet 220, and a cap member 300 covering the inlet 220. The cap 300 includes a ventilation member 100 fixed to the inlet 220, And can be detached from the body 200 by screw coupling, elastic engagement, or the like.

Such an electric / electronic device ventilation filter may be an acoustic device ventilation filter, or may be a ventilation filter for preventing the ignition of a battery.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: ventilation hole 100: ventilation member for ventilation filter
101: Adhesive member 200: Body
210: center hole 220: inlet part
230: flange portion 240: O-ring
300: cap

Claims (6)

A ventilation member for a ventilation filter which permeates the gas discharged from the inside of the housing of the electric / electronic device to the outside and blocks the liquid which flows into the inside from the outside of the housing,
The ventilation member is a metal member having a plate-like shape,
And a plurality of ventilation holes penetrating through the ventilation member and arranged in an island shape and arranged and having an average diameter of 0.2 탆 to 10 탆. The method according to claim 1,
Wherein the ventilation member has a thickness of 3 占 퐉 to 50 占 퐉. The method according to claim 1,
Wherein the vent hole is formed by inclining at a predetermined angle with respect to a thickness direction of the vent member. The method according to claim 1,
Wherein an end portion of the ventilation hole is formed to be smooth so that the inner circumferential surface of the ventilation hole and the surface of the ventilation member are smoothly connected to each other. An acoustic device ventilation filter comprising the ventilation member for ventilation filter according to any one of claims 1 to 4. A ventilation filter for preventing ignition of a battery, comprising the ventilation member for ventilation filter according to any one of claims 1 to 4.

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