JP5556093B2 - COOLING DEVICE AND ELECTRONIC DEVICE USING THE SAME - Google Patents

Description

  The present invention relates to a cooling device and an electronic apparatus using the same.

  For example, in a television receiver which is an example of an electronic device, the display unit has been increased in size, and as a result, the cooling structure has become important.

  That is, the front side of the main body case is a display unit, electronic components are arranged in the main body case, and a plurality of heat radiation fins are integrally provided on the back cover provided on the back side of the main body case. (For example, refer to Patent Document 1).

JP 7-322172 A

  The problem with the above conventional example is that the cooling effect must be further enhanced.

  That is, in the conventional example, heat generated from the electronic components in the main body case is radiated to the outside of the main body case from a plurality of heat radiation fins integrally formed on the back cover.

  To explain this point in more detail, the heat in the main body case is first transmitted to the plurality of heat radiating fins, and then radiated outside the main body case to the air rising through the ventilation path between the radiating fins. .

  However, the air rising in the ventilation path between the radiating fins immediately rises in temperature due to heat conduction from the radiating fins and becomes high temperature.

  For this reason, in the radiating fin part above it, the heat in the main body case can hardly be radiated, and as a result, the cooling effect becomes low.

  Therefore, the present invention aims to enhance the cooling effect.

And in order to achieve this object, the cooling device of the present invention includes a heat exchanger having one side to be cooled and the other side to the outside air side, and a blower for performing forced convection on the one side of the heat exchanger. A plurality of long groove air passages are formed on the other surface side of the heat exchanger, and the long groove air passage on the other surface side is divided into a longitudinal direction of the air passage. A partition is provided, and a plurality of the long-slot air passages are formed on one surface side of the heat exchanger, and the heat exchanger has a triangular wave plate shape that alternately protrudes from the cooled device side and the outside air side. The air exchange path between the protrusions adjacent on one surface side of the heat exchanger is the ventilation path on the cooled device side, and the air flow path between the protrusions adjacent on the other surface side of the heat exchange body is the heat exchange. The body is composed of a synthetic resin plate or a metal plate, and the first partition is Formed by long plate, this in the longitudinal direction of one side of the long plate, provided an inrush piece enters the heat exchanger ventilation path of the outdoor air provided to the other side of, thereby, achieve the intended purpose To do.

As described above, the cooling device of the present invention includes a heat exchanger that has one surface on the cooled device side and the other surface on the outside air side, and a blower that performs forced convection on the one surface side of the heat exchanger, The heat exchanger has a plurality of long groove air passages on the other surface side, and the long groove air passage on the other surface side is provided with a first partition that divides the longitudinal direction of the air passage. A plurality of the long groove-shaped ventilation paths are formed on one surface side of the heat exchange body, and the heat exchange body has a triangular wave plate shape alternately projecting to the cooled device side and the outside air side, and the heat exchange Between the projections adjacent on one side of the body is the ventilation path on the cooled device side, and between the projections adjacent on the other side of the heat exchange body is the ventilation path on the outside air side , the heat exchange body is synthesized It is composed of a resin plate or a metal plate, and the first partition is formed by a long plate. This in the longitudinal direction of one side of the long plate, is provided with a rush piece enters the outside air side of the air passage in which is provided on the other surface of the heat exchanger, it is possible to enhance the cooling effect.

  That is, in the present invention, on one side of the heat exchanger (cooled equipment side), forced convection is performed by a blower to increase the thermal conductivity to the heat exchanger, and the other side of the heat exchanger. Since the side is the outside air side, the heat transmitted to the heat exchanger can be radiated by the outside air rising on the ventilation path on the other surface side of the heat exchanger.

  In addition, the long groove-like ventilation path on the other surface side of the heat exchanger is provided with the first partition that divides the longitudinal direction of the ventilation path, so that the air rising the ventilation path between the radiating fins The temperature immediately rises due to heat conduction from the heat radiating fins, and even if the temperature becomes high, it is released out of the ventilation path by the first partition.

  For this reason, the heat radiation of the radiating fins above it is performed by outside air newly entering from outside the ventilation path, and as a result, the cooling effect can be enhanced.

The perspective view which shows (Embodiment 1) of this invention Exploded perspective view Rear view of the main part Rear view Partial cutaway perspective view of the main part Sectional view taken along line VI-VI in FIG. Cross section of the main part Cross section of the main part (A) is the principal part sectional view (b) is the B part enlarged sectional view of (a) Rear view of the main part (A) is the principal part sectional drawing of (Embodiment 2) of this invention (b) is the B partial expanded sectional view of (a). Exploded perspective view showing (Embodiment 3) of the present invention (A) is the principal part sectional view (b) is the B part enlarged sectional view of (a) The disassembled perspective view which shows (Embodiment 4) of this invention (A) is the principal part sectional view (b) is the B part enlarged sectional view of (a)

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 shows an example in which the present invention is applied to a display device 1 as an example of an electronic device, and the display device 1 is suspended under an eaves 3 of a store 2.

  As shown in FIGS. 1 to 4, the display device 1 includes a display unit 4 on the front side, a main body case 6 in which an electronic component mounting substrate 5 is disposed on the back side, and a back side of the main body case 6. The cooling device 7 arranged, the heat exchanger cover 8 arranged on the back side of the cooling device 7, and the back cover 9 arranged on the back side of the heat exchanger cover 8 are provided.

  Since the display device 1 is of an outdoor installation type, the display unit 4 and the cooling device 7 are both attached to the main body case 6 in a watertight manner.

  Further, since the display unit 4 and the cooling device 7 are watertightly attached to the main body case 6, heat in the main body case 6 (mainly heat generated from the display unit 4 and the electronic components of the mounting substrate 5). Needs to be effectively discharged out of the main body case 6 by the cooling device 7.

  Therefore, in order to effectively release the heat in the main body case 6 to the outside of the main body case 6 by the three cooling devices 7 arranged on the left and right, the following configuration is adopted in the present embodiment.

  As shown in FIGS. 5 to 8, each cooling device 7 is alternately arranged on the side to be cooled (in the present embodiment, the display unit 4 or the mounting substrate 5 side) and on the outside air side (in the present embodiment, the back cover 9). A projecting triangular wave plate-shaped heat exchanger 10 and a blower 11 for performing forced convection on the one surface side of the heat exchanger 10 (in the present embodiment, the display unit 4 on the cooled device side and the mounting substrate 5 side). It is the composition provided with. The heat exchanger 10 may have a corrugated shape that alternately protrudes from the cooled device side and the outside air side. Such a corrugated shape and a triangular corrugated shape can be easily formed by a synthetic resin plate or a metal plate. Even if it is formed of a synthetic resin plate or a metal plate, the heat dissipation effect by ventilation can be sufficiently ensured.

  And by setting it as the above structure, in the to-be-cooled apparatus side of the said heat exchange body 10, as shown to FIG. 6, FIG. As shown in FIG. 10, the air blown by the blower 11 flows from the top to the bottom. That is, the heat of the display unit 4 and the mounting substrate 5 that are trapped in the main body case 6 is transmitted to the heat exchanger 10 through the ventilation path 12 by the blower of the blower 11.

  On the other hand, as shown in FIGS. 5, 6, and 8, an air passage 13 having a longitudinal groove shape and a long groove shape is formed on the outside air side of the heat exchanger 10. As a result, outside air flows from the bottom to the top. That is, the heat of the display unit 4 and the mounting substrate 5 is transmitted to the inside of the heat exchange body 10, and on the outside air side of the heat exchange body 10, the outside air rises by natural convection in the ventilation path 13 from the bottom to the top Therefore, heat is dissipated by the outside air, and as a result, the display unit 4 and the mounting substrate 5 are effectively cooled.

  Further, in order to allow outside air to flow to the back cover 9 side of the heat exchanger 10, the heat exchanger cover 8 includes an outer periphery of the heat exchanger 10 and a back cover as can be understood from FIGS. It is formed in a frame shape in which a sufficient space is formed on the 9 side.

  Furthermore, as can be understood from FIGS. 2 and 4, the rear cover 9 is also formed with a plurality of vent holes 14.

  As shown in FIGS. 2, 5, and 6, the present embodiment is characterized in that a partition 15 that divides the long groove-like ventilation path 13 extending in the vertical direction in the vertical direction, which is the longitudinal direction, is provided. It is.

  The partition 15 is formed of a long plate, and on one side of the long plate in the longitudinal direction (on the heat exchange body 10 side), as shown in FIG. 6, the outside air side provided on the other surface side of the heat exchange body 10 An intrusion piece 16 that rushes into the ventilation path 13 is provided so that the long groove-shaped ventilation path 13 extending in the vertical direction is divided by the partition 15 in the vertical direction that is the longitudinal direction.

  Therefore, when the temperature of the heat exchanger 10 rises due to heat generated from the display unit 4 and the electronic components of the mounting substrate 5, the outside of the heat exchanger 10 rises from the bottom to the top in the ventilation path 13. Natural convection occurs, and heat is released by the outside air. As a result, the display unit 4 and the mounting substrate 5 are effectively cooled.

  At this time, since the long groove-shaped ventilation path 13 is divided by the partition 15 in the vertical direction, which is the longitudinal direction, the outside air rising from the ventilation path 13 below the partition 15 is separated from the partition. 15 flows out of the ventilation path 13.

  As a result, fresh outside air flows into the ventilation path 13 above the partition 15 and rises in the ventilation path 13.

  Also in the ventilation path 13 above, heat is radiated by this outside air, and as a result, the display unit 4 and the mounting substrate 5 are effectively cooled.

  On the other hand, when the inside of the ventilation path 13 is not divided in the vertical direction, the temperature of the outside air sufficiently rises in the course of its rise, and after that, the state where it does not contribute much to the cooling of the heat exchanger 10. Become.

  As shown in FIG. 6, a drain opening 17 is provided between the tip of the entry piece 16 and the other surface side of the heat exchange element 10, so that rainwater or the like infiltrated from the vent hole 14 of the back cover 9. Flows through the drain opening 17 in the ventilation path 13 from the upper side to the lower side and flows out of the back cover 9 again.

  Further, as understood from FIGS. 9 and 2, the heat exchanger cover 8 portion facing the partition 15 has a frame (an example of an air passage dividing bar) 8 a, and the partition 15 A recess 18 into which the other side of the rear cover 9 side enters is provided. Further, in the frame constituting the heat exchanger cover 8, a convex portion 20 that protrudes into the concave portion 19 of the back cover 9 is provided at a portion facing the partition 15 (back cover) as shown in FIG. 9 is a wind path dividing bar).

  For this reason, the inside of the ventilation path 13 in the part of the partition 15 is ensured in a vertically divided state up to the outside of the back cover 9. Therefore, in the ventilation path 13 above and below the partition 15, respectively. The entered outside air rises in the ventilation path 13, and thereby the heat exchanger 10 is dissipated, so that the display unit 4 and the mounting substrate 5 are effectively cooled.

  Also, as shown in FIGS. 5 and 6, in order to improve the cooling effect when the main body case 6 is installed vertically, on the other surface side (back cover 9 side) of the central heat exchanger 10 arranged in a row of three sheets. A partition 21 formed by a long plate orthogonal to the partition 15 is provided. The partition 21 is provided in the ventilation path 13 of the heat exchanger 10 along the ventilation path 13.

  That is, the main body case 6 is horizontally long as shown in FIG. 1 and FIG. 2, and is normally used in this horizontally long state, but may be used in a vertically long state. Is used to divide the upward / downward direction of the outdoor air so that effective cooling can be performed.

  Of course, the heat exchanger cover 8 facing the partition 21 has a frame (an example of an air passage dividing bar) 8b as shown in FIG. A recess (not shown) into which the other side of the body 21 on the back cover 9 side enters is provided. Further, in the frame constituting the heat exchanger cover 8, a convex portion (not shown) that enters a concave portion (not shown) of the back cover 9 is provided at a portion facing the partition 21 (becomes an air passage dividing bar). Z).

(Embodiment 2)
FIG. 11 shows (Embodiment 2) of the present invention, in which the concave portion 18 and the convex portion 20 of the frame facing the partition body 15 shown in FIG. 9 are eliminated, and cushion bodies 22 and 23 are provided in that portion. is there.

  Specifically, a cushion body 22 is provided between the partition 15 and the heat exchange body cover 8, and a cushion body 23 is provided between the heat exchange body cover 8 and the back cover 9.

(Embodiment 3)
12 and 13 show (Embodiment 3) of the present invention, in which the heat exchanger cover 8 used in (Embodiment 1) is eliminated.

  Therefore, the end of the back cover 9 of the partition 15 is directly inserted into the recess 19 of the back cover 9.

(Embodiment 4)
FIG. 14 and FIG. 15 show (Embodiment 4) of the present invention, and the heat exchange element 24 in this Embodiment 4 is a flat plate 25, a radiating fin 26 protruding to the mounting substrate 5 side and the back cover 9 side. Are provided at predetermined intervals, and the space between the adjacent radiating fins 26 on the back cover 9 side of the flat plate 25 is used as an outside air ventilation path.

  Of course, such a heat exchanger 24 also has a drain opening 27.

  In (Embodiments 2 to 4), only different portions from (Embodiment 1) are described, and the basic structure is the same as (Embodiment 1).

  As described above, the cooling device of the present invention includes a heat exchanger having one surface on the side to be cooled and the other surface on the outside air side, and a blower that performs forced convection on the one surface side of the heat exchanger, The heat exchanger has a plurality of long groove air passages formed on the other surface side, and the long groove air passage on the other surface side is provided with a first partition that divides the longitudinal direction of the air flow passage. Therefore, the cooling effect can be enhanced.

  That is, in the present invention, on one side of the heat exchanger (cooled equipment side), forced convection is performed by a blower to increase the thermal conductivity to the heat exchanger, and the other side of the heat exchanger. Since the side is the outside air side, the heat transmitted to the heat exchanger can be radiated by the outside air rising on the ventilation path on the other surface side of the heat exchanger.

  In addition, the long groove-like ventilation path on the other surface side of the heat exchanger is provided with the first partition that divides the longitudinal direction of the ventilation path, so that the air rising the ventilation path between the radiating fins The temperature immediately rises due to heat conduction from the heat radiating fins, and even if the temperature becomes high, it is released out of the ventilation path by the first partition.

  For this reason, the heat radiation of the radiating fins above it is performed by air newly entering from outside the ventilation path, and as a result, the cooling effect can be enhanced.

  Therefore, for example, it can be used for an outdoor installation type electronic apparatus.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Shop 3 House 4 Display part 5 Mounting board 6 Main body case 7 Cooling device 8 Heat exchanger cover 8a Frame (an example of an air-path division | segmentation crosspiece)
8b Frame (an example of an airway breaker)
DESCRIPTION OF SYMBOLS 9 Back cover 10 Heat exchanger 11 Blower 12, 13 Ventilation path 14 Vent hole 15 Partition body 16 Entry piece 17 Drain opening 18, 19 Concave part 20 Convex part 21 Partition body 22, 23 Cushion body 24 Heat exchanger 25 Flat plate 26 Heat radiation Fin 27 Drain opening

Claims (5)

A heat exchanger having one side to be cooled and the other side to the outside air side, and a blower for performing forced convection on the one side of the heat exchanger, the heat exchanger having a long groove on the other side A plurality of shaped air passages are formed, and the long groove-like air passage on the other surface side is provided with a first partition that divides the longitudinal direction of the air passage, and the long groove is formed on one surface side of the heat exchanger. A plurality of shaped air passages are formed, and the heat exchange element has a triangular wave plate shape that alternately protrudes to the cooled device side and the outside air side, and between the adjacent protrusions on one surface side of the heat exchange element A ventilation path on the cooled device side, an outside air ventilation path between adjacent projections on the other surface side of the heat exchange body, the heat exchange body is made of a synthetic resin plate or a metal plate, one partition body is formed by long plate in the longitudinal direction of one side of the long plate, before Cooling device provided with a rush piece enters the outside air side of the air passage in which is provided on the other surface of the heat exchanger. The cooling device according to claim 1 , wherein a drain opening is provided between the tip of the rush piece and the other surface side of the heat exchange element. The cooling device according to any one of claims 1 and 2, wherein a second partition body formed by a long plate, which is orthogonal to the first partition body, is provided on the other surface side of the heat exchange body. The cooling device according to claim 3 , wherein the second partition is provided along the ventilation path in the ventilation path on the other surface side of the heat exchanger. The heat exchange body cover is provided on the other surface side of the heat exchange body, and a first air path dividing bar is provided on a portion of the heat exchange body cover facing the first partition. The cooling device according to claim 4 .

Images