KR100707683B1 - Apparatus for auto radiating of electronic products - Google Patents

Abstract

The present invention relates to an automatic heat dissipating device for an electronic product, comprising: a heat dissipating port (22) in which a plurality of electronic heat dissipating devices are arranged in a housing (20) of an electronic product; an opening / closing plate (30) A hinge shaft 40 connected to the central portion of each opening and closing plate 30 for turning the hinge shaft 30 to rotate and a link bar 50 connected to one end of each hinge shaft 40 and moving linearly, A bimetal 70 for rotating the rotary shaft 60 by a one-way bending phenomenon when the temperature of the electronic product rises and rotating the bimetal 70; And a return spring 90 installed to support the link bar 50 linearly moved by the bimetal 70. Accordingly, the present invention has the effect of automatically releasing a plurality of heat dissipation holes by a relatively simple operation using a bimetal when the internal heat of the electronic product is increased, thereby dissipating internal heat of the electronic product more effectively while reducing manufacturing process and cost .

Heat dissipation, ventilator, open / close plate, link bar, bimetal, fan,

Description

TECHNICAL FIELD [0001] The present invention relates to an automatic heat dissipating device for an electronic product,

Figs. 1A and 1B are side cross-sectional views of a heat discharging opening / closing apparatus of a conventional electronic product,

2 is a sectional view showing an automatic heat dissipating device of an electronic product according to the present invention,

FIGS. 3 to 4 are sectional views showing a state of use of an automatic heat dissipating device of an electronic product according to the present invention.

Description of the Related Art

20: housing 22:

30: opening and closing plate 40: hinge shaft

50: link bar 60: rotating shaft

62: Bracket 70: Bimetal

80: fan switch 82: fan

90: return spring

The present invention relates to an automatic heat dissipation device for an electronic product, and more particularly, to an electronic device capable of minimizing the influence of an electronic product due to heat generation by automatically operating a heat dissipation device To an automatic heat dissipating device.

Generally, in an electronic product such as a TV, a monitor, a video player, and a DVD player, a lot of heat is generated during operation of the internal electronic components. If such heat is not properly discharged to the outside, the function of the component weak in heat deteriorates over time , Furthermore, it is damaged, which results in shortening the life of the product.

Generally, the housing of the household appliance is formed of a pressed metal plate. When the internal temperature rises according to the operation of the product, the metal plate housing having a high thermal conductivity absorbs heat and dissipates heat to the outside with a relatively low temperature, A heat radiating hole having various shapes is formed on the rear cover itself, especially on the rear cover, so that the heat radiation to the outside is more effective.

In addition, heat is released by natural convection using a heat sink which is installed in contact with the heat generating component to remove internal heat and has a plurality of heat dissipating fins.

However, when the entire housing is formed of a metal plate, the manufacturing cost is increased, the weight of the product is increased, and in the case of forming the heat discharging port, dust and the like are introduced by the external air circulating at all times, Even if it is used, heat dissipation to the outside must be possible by heat conduction of the housing, and heat dissipating fins are similarly required for more effective heat dissipation.

In recent years, home appliances such as DVD and VCR have been used as a top cover for a plastic injection product that can be manufactured at a lower cost than a metal plate produced by press processing. Therefore, due to the characteristics of a plastic whose thermal conductivity is lower than that of a metal plate, There is a growing need for a method for releasing it to the outside.

1A and 1B are side cross-sectional views showing an embodiment of a heat-releasing opening and closing apparatus of a conventional electronic product.

1A, a conventional heat exchanger opening / closing device includes a coupling part 111 formed to be inserted into and coupled to a body 110 and a lower heat radiating port 12, A through hole 112 penetrating through the upper side to provide a path, and an opening / closing means 120 provided thereon.

The flange 11a is integrally formed with the guide rib 11a so that the flange 11a is formed integrally with the expansion plate 121. The flange 11a is formed at the upper end of the body 110, And the coupling hook 111a at the lower end is formed to be caught and fixed to the inner end of the heat dissipating port 12. [

The opening and closing means 120 provided in the through hole 112 of the body 110 includes an expansion plate 121 and a guide rib 122 for guiding the expansion plate 121 to bend only upward, The body 121 is formed of a material having a coefficient of thermal expansion greater than the thermal expansion coefficient of the body 110 and laterally positioned at the upper end of the through hole 112 so that both ends are fixed to the body 110.

The operation of the conventional heat exchanger opening / closing apparatus having the above-described configuration is as follows.

Generally, the through-hole 112 is kept completely closed by the expansion plate 121, and when heat is generated inside the product, the heat that has risen through the heat sink 12 flows through the body 110 and the expansion plate 121, the heated expansion plate 121 has a relatively high coefficient of thermal expansion, so that it expands more rapidly than the body and causes a change in shape, and such deformation occurs only upwardly by the guide ribs 122.

As a result of the upward expansion of the expansion plate 121, a gap is formed between the upper end of the body 110 in which the deformation does not occur and the gap is formed such that heat generated from the inside of the product passes through the through hole 112 And is a path of movement to the outside.

As a result, the internal heat of the electronic product can be dissipated to the outside.

As shown in FIG. 2B, the expansion plate 121 may have another shape, and may be preferably formed, for example, in a fan shape.

The plurality of fan shaped expanding ribs 221 are fixed along the periphery of the body 210 by the guide frame 222 to thereby suppress deformation of the body 210 and the fixed portion at the time of thermal expansion And is returned to the initial position when the inner heat is reduced and contracted.

The lip plate 221 is formed by contacting two kinds of metal plates 221a and 221b having different thermal expansion rates so as to be curved by heat so that the surface of the metal having a small expansion rate contracts relatively and the metal surface with a larger expansion rate And is curved with its contact surface inward as it is enlarged.

The process of heat flow through the heat dissipation hole due to the increase in heat resistance and the operation of the heat dissipation device opening / closing device are the same as described above.

However, such a heat-exchanger opening / closing apparatus has a complicated structure in which the body is fixed to the upper side of the housing on which the heat-radiating port is formed and the inflating plate is fixedly coupled to the upper flange of the body so as to conform to the guide, (Bimetal) having different coefficients of thermal expansion are formed in opposite directions, the bimetal is formed in an amount corresponding to the area to be opened. There is a problem that the cost is greatly increased.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems of the prior art, and it is an object of the present invention to provide an air conditioner which is capable of always closing a heat dissipating port to prevent dust from entering, The present invention is to provide an electronic product heat exchanger opening / closing device which can more effectively dissipate internal heat of an electronic product while reducing the manufacturing process and cost.

In order to achieve the above object, the present invention provides a heat exchanger comprising: a heat dissipation hole in which a plurality of heat dissipation holes are arranged in a housing of an electronic product; an open / close plate closely contacted with each heat dissipation opening; And a bimetal for pressing and rotating the rotary shaft due to a one-way bending phenomenon when the temperature of the electronic product rises, And a return spring installed at the other end of the link bar to help return the link bar linearly moved by the bimetal.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the most preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art.

FIG. 2 is a sectional view showing an automatic heat dissipating device of an electronic product according to the present invention, and FIGS. 3 to 4 are sectional views showing a use state of an automatic heat dissipating device of an electronic product according to the present invention.

2, an automatic heat dissipating device for an electronic product according to the present invention includes a plurality of heat dissipating openings 22 formed in a housing 20, an opening / closing plate 30 for opening / closing the respective heat dissipating openings 22, A hinge shaft 40 connected to each opening and closing plate 30, a link bar 50 connecting one end of each of the hinge shafts 40 and a rotary shaft 60 enabling linear movement of the link bar 50, And a bimetal 70 for rotating the rotary shaft 60 in accordance with the internal temperature of the housing 20.

The housing 20 is a casing of all commonly used electronic products, for example, a top cover used in a VCR, a DVD, or a combination thereof, and a side open case used in a computer.

A plurality of heat dissipation openings 22 for discharging the internal heat of the housing 20 to the outside are formed and a plurality of heat dissipation openings 22 are formed on the back surface or the side surface of the housing 20 along a straight line .

The opening and closing plate 30 which is in close contact with each of the heat radiating openings 22 and is pivotally opened and closed can be made of a metal or a lightweight plastic injection molded product and has a horizontal surface 31 covering the heat radiating port 22, And a contact surface 32 extending with a step difference therebetween.

One side of the contact surface 32 is in close contact with the outer surface of the proximity housing 20 of the heat dissipating port 22 and the other contact surface 32 is in close contact with the inside surface of the close housing 20 of the heat dissipating port 22.

 A hinge shaft 40 is connected to the center of each opening and closing plate 30 facing the inside of the housing 20 and a link bar 50 hinged to each end of each hinge shaft 40 is linearly movable Respectively.

" 처럼 절곡된 형상을 가진다.Therefore, the link bar 50 is hinged to the hinge shaft 40 at regular intervals in an elongated plate shape,

"As shown in Fig.

"의 내부측으로 접촉되는 회전축(60)은, 하우징(20)에 설치된 브라켓(62)의 중심으로부터 회전 가능하게 설치되며, 브라켓(62)을 중심으로 하는 회전축(60)의 타단 즉, 자유단 측에는, 전자제품의 온도 상승시 일방향의 휨 현상으로 회전축(60)을 가압하여 회전시키는 바이메탈(70)이 설치된다.Then, the "

Is rotatably provided from the center of the bracket 62 provided in the housing 20 and the other end of the rotating shaft 60 centered on the bracket 62, And a bimetal 70 for rotating and rotating the rotary shaft 60 due to a one-way bending phenomenon when the temperature of the electronic product rises.

"의 일단부 외측에 근접하여 팬스위치(80)가 설치되며, 팬스위치(80)의 온/오프 작동에 의하여 구동되며 하우징(20)의 내부에서 방열구(22)를 향하는 팬(fan:82)이 더 설치된다. 팬(82)은 통상적으로 전자제품에 사 용되는 소형이면 가능하다.On the other hand,

A fan 82 is provided in the vicinity of the one end of the housing 20 and driven by the on / off operation of the fan switch 80, The fan 82 is usually available in a small size for electronic products.

The distance between one end of the link bar 50 and the fan switch 80 is determined by the degree of bending of the bimetal 70 and is preferably somewhat spaced.

A return spring 90 for fixing the link bar 50 linearly moved to the other end side of the link bar 50, that is, the opposite side of the link bar 50 provided with the fan switch 80, is fixedly installed.

The operation of the automatic heat dissipating device of the electronic product having such a structure is as follows.

3, the contact surface 32 of the opening and closing plate 30 is brought into close contact with the inner and outer surfaces of the housing 20 in the vicinity of the heat dissipating port 22 to close the heat dissipating port 22 in the horizontal plane 31 And the internal heat of the electronic product is increased, the bimetal 70, which is responsive to the temperature, is bent in one direction, and such a deflection is applied to the free end of the rotary shaft 60. [

"에 접촉되어 링크바(50) 전체를 일방향으로 밀게 되며, 이에 링크바(50)는 회전축(60)의 회전 방향을 따라 직선 이동을 하게 되고, 링크바(50)에 연결된 각 힌지축(40)은 힌지 회동되어 개폐판(30)을 도시된 화살표 방향으로 회동시키게 된다.The rotary shaft 60 rotates about the bracket 62 and the other end rotates about the "

The link bar 50 is linearly moved along the rotating direction of the rotating shaft 60 and is connected to the respective hinge shafts 40 Is hingedly rotated to rotate the opening / closing plate 30 in the direction of the arrow shown.

The contact surface 32 of the opening and closing plate 30 which is in close contact with the inner and outer surfaces of the housing 20 is dropped and the heat dissipating port 22 is opened and the heat inside the housing 20 is discharged to the outside.

4, the bimetal 70 is further bent so that the free end of the rotary shaft 60 is in contact with the upper surface of the rotary shaft 60, And the rotary shaft 60 further moves the link bar 50 in one direction.

The linearly moved link bar 50 is brought into contact with the fan switch 80 at one end to turn on the fan switch 80 and the fan 82 electrically connected to the fan switch 80 according to the ON operation of the fan switch 80 The heat is rapidly discharged to the side of the heat radiating opening 22 which is opened and opened.

The opening and closing plate 30 connected to each of the hinge shafts 40 in accordance with the linear movement of the link bar 50 has a larger turning angle and a larger opening range of the heat discharging opening 22, The elastic restoring force of the return spring 90 connected to the link bar 50 is greater.

The bimetal 70 is retracted to the original position and the pressing force applied to the free end of the rotary shaft 60 is released by the elastic restoring force of the return spring 90. As a result, The link bar 50 is linearly moved to the initial position and returned, and the heat radiating port 22 is closed by the opening / closing plate 30. [

As described above, according to the preferred embodiment of the present invention, since the heat discharging opening 22 is always closed by the opening / closing plate 30, the inflow of dust and the like from the outside is prevented, The opening / closing plate 30 is automatically opened by the operation of the bimetal 70, so that effective heat radiation can be achieved.

As described above, the automatic heat dissipating device for an electronic product according to the present invention automatically opens a plurality of heat dissipating openings by a relatively simple operation using a bimetal when the internal heat of the electronic product increases, It has an effect of allowing the heat of the internal heat to be dissipated more effectively.

It is to be understood that the present invention is not limited to the above-described embodiment, and that various modifications and variations of the present invention are possible in light of the above teachings. 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.

Claims (3)

A plurality of heat dissipation openings formed in the housing of the electronic product, An opening / closing plate which is in close contact with each of the heat radiating openings and is pivotally opened / closed, A hinge shaft connected to a central portion of each of the opening and closing plates for pivotal opening and closing of the opening and closing plate, A link bar in which one end of each of the hinge shafts is connected and linearly moved, A rotation shaft installed to be in contact with one end side of the link bar, A bimetal for pressing and rotating the rotating shaft by a one-way bending phenomenon when the temperature of the electronic product rises; A return spring installed at the other end of the link bar to help return the link bar linearly moved by the bimetal, And an automatic heat dissipation device for an electronic product. The method according to claim 1, A fan switch installed close to one end of the link bar, A fan which is driven by the on / off operation of the fan switch and is directed from the inside of the housing to the heat dissipating port, Further comprising an automatic heat dissipation device of the electronic product. delete

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