JP5556351B2 - Heat dissipation unit and electronic device using the same - Google Patents

Description

  The present invention relates to a heat dissipating unit used for an electronic device installed outdoors, for example, and an electronic device incorporating the same.

  In an electronic device, for example, a television receiver, a display unit is provided on the front side of the main body case, the control unit of the display unit is provided inside the main body case, and the rear side of the control unit is covered with a partition plate. It was.

  In some cases, the electronic device is used by being suspended from a ceiling (for example, Patent Document 1).

JP-A-7-322172

  In recent television receivers, the display portion has become extremely large. Therefore, efforts have been made to utilize the high display effect and install it outdoors as an advertising device.

  In this case, in order to use it outdoors, it is necessary to take a sealed structure so that rainwater does not enter the main body case. For this reason, the front opening of the main body case is a display section, and the rear opening is a partition. Each plate was sealed.

  However, if such a sealed structure is adopted, it is not possible to sufficiently dissipate heat from the back side of the display unit, which is an inner part of the main body case, and the control unit.

  Therefore, conventionally, the partition plate provided on the back side of the main body case is made of metal, and a plurality of metal fins are provided on the outside of the partition plate, and the air in the main body case is agitated with a blower in this state. Was configured.

  That is, by stirring the air in the main body case with a blower, first, the heat in the main body case is transmitted to the fins in the main body case, and then the heat is transferred from the fins to the partition plate by heat conduction, Thereafter, heat is transferred to the fins outside the main body case by heat conduction, and then heat is radiated from the fins outside the main body case to the outdoor air.

  However, such a heat dissipation structure, that is, a structure in which a plurality of metal fins are provided outside the metal partition plate, as is well known, becomes extremely heavy. John's receiver itself is also heavy, and as a result, it is not preferable for installation at high altitudes outdoors.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce the weight of a heat dissipation unit and an electronic device using the same.

In order to achieve this object, a heat dissipation unit of the present invention is mounted on one surface of an electronic device, and partitions a partition between the inside and the outside of the electronic device, and an external side of the electronic device of the partition plate. The partition plate has first and second vent holes, and the heat exchanger has the first vent on the outside of the electronic device of the partition plate. A hot air passage body in which an opening and a second ventilation port are connected, and air on the inside of the electronic device of the partition plate is connected to the outside of the electronic device of the partition plate. A blower that blows air from the mouth side to the second vent side through the hot air passage body is provided, and the hot air passage body connects the first vent hole and the second vent hole in a bridge shape. The part of the warm air passage body between the first vent and the second vent is the partition plate of the electronic device. And a heat dissipation unit that is a shape having a convection passage between the parts side, thereby is to achieve the intended purpose.

As described above, the heat dissipating unit of the present invention is mounted on one surface of an electronic device, and partitions a partition between the inside and the outside of the electronic device, and a heat exchanger disposed on the outside of the electronic device of the partition plate. The partition plate has first and second vent holes, and the heat exchanger is configured such that the first vent hole and the second vent hole are provided outside the electronic device of the partition plate. Are connected to the outside of the electronic device of the partition plate, and the air inside the electronic device of the partition plate is connected to the hot air passage from the first vent hole side. A blower that blows air to the second vent through the body is provided , and the hot air passage body connects the first vent and the second vent in a bridge shape, A convection passage between the first vent and the second vent is provided between the partition plate and the outside of the electronic device. Since is obtained by the heat dissipating unit has a shape having, it is possible to reduce the weight of the heat-dissipating unit and an electronic apparatus using the same.

  That is, in the present invention, the heat inside the main body case can be transferred to the heat exchanger outside the main body case by the blower of the blower without providing heat dissipation fins inside the main body case of the electronic device as in the prior art. Since it can be moved and effectively dissipated, it is possible to reduce the weight of the heat dissipating unit and the electronic equipment using the heat dissipating unit.

  Further, in the present invention, a hot air path body constituting a heat exchanger, and a blower that blows air from the first vent side of the partition plate to the second vent side through the hot air path body, Since the partition plate is provided on the outer side of the electronic device, the degree of freedom in design and arrangement of the control unit of the electronic device disposed on the inner side of the partition plate is improved.

The perspective view which shows the example of installation of the electronic device of Embodiment 1 of this invention. Perspective view of the back side Exploded perspective view of the back side Rear perspective view of the heat dissipation unit (A) Front view of the heat dissipation unit (b) Top view (c) Side view (d) Bottom view (A) Sectional view (b) Sectional view (A) The perspective view (b) The perspective view which changed the arrangement state

  Hereinafter, the present embodiment will be described with reference to the drawings.

(Embodiment 1)
In FIG. 1, reference numeral 1 denotes a display device used as an example of an electronic device. In addition to the function as a television receiver, an outdoor advertising display can be performed.

  Therefore, in FIG. 1, the display device 1 is installed under the eaves 3 of the store 2, that is, outdoors, and the horizontally long and rectangular (an example of a quadrilateral) display unit 4 is exposed to the front side. ing.

  As shown in FIGS. 2 and 3, the display device 1 is disposed in a watertight state so as to cover a horizontally long and rectangular main body case 5 having an open front surface and a rear surface, and a front opening portion of the main body case 5. The display unit 4, the control unit 6 that controls the display unit 4, and the rear opening of the main unit case 5 are divided into the display unit 4 and the rear side of the display unit 4. 4 (a plurality of examples) of the heat dissipating units 7 that are covered in a watertight state, and a breathable back cover 8 that covers the back side of the heat dissipating unit 7 in a vented state.

  In this embodiment, as understood from FIG. 3, the four heat radiating units 7 are arranged side by side so that the back opening of the main body case 5 is covered with the four heat radiating units 7 in a watertight state. It is said.

  The four heat radiating units 7 are attached to the rear opening of the main body case 5 constituting the display device 1 as shown in FIGS. 4 and 5, respectively, and partition the inside and the outside of the main body case 5 in a watertight state. A vertically long, rectangular metal partition plate 9, a heat exchanger 10 disposed outside the main body case 5 of the partition plate 9, and a blower disposed outside the main body case 5 of the partition plate 9. 11.

  In addition, although the partition plate 9 of the four heat radiating units 7 has a vertically long rectangular shape in the present embodiment, it can be formed in a horizontally long rectangular shape or a square shape depending on the shape of the main body case 5 or the like. For example, when the four heat radiating units 7 are made into one heat radiating unit 7, the partition plate 9 becomes one horizontally long rectangular shape.

  As is understood from FIGS. 3 and 4, the four partition plates 9 are each provided with an upper vent 12 on the inner side (lower side) of the upper side, and on the lower side inner side (upper side) facing the upper side. Is provided with a lower vent 13.

  Further, as shown in FIGS. 4 to 6, the heat exchanger 10 has the upper vent 12 and the lower vent 13 connected to the partition plate 9 on the outer side of the main body case 5 with a plurality of vertically long hot air. The road body 14 is connected in a bridge shape in the vertical direction.

  That is, the hot air passage body 14 is made of synthetic resin and has a cylindrical shape, and the upper vent 12 and the lower vent 13 are in communication with each other on the outside of the main body case 5.

  Further, the upper vent 12 side and the lower vent 13 side of the plurality of hot air passage bodies 14 are gathered together, and in this gathered state, the upper is connected to the upper vent 12 and the lower is the lower vent. 13.

  And the said air blower 11 is arrange | positioned in the lower collection cylinder 14a of the some hot air path body 14. FIG.

  At this time, in this embodiment, the blower 11 is previously attached to the lower vent 13 portion of the partition plate 9, and in that state, the lower collecting cylinder 14a of the warm air passage body 14 is covered so as to cover the outer periphery of the blower 11. I am doing so.

  In addition, a ventilation space 15 is provided between the adjacent hot air passage bodies 14 in the plurality of hot air passage bodies 14.

  Further, in the present embodiment, the upper vent 12 and the lower vent 13 are connected in a bridge shape in the vertical direction by the vertically long hot air passage 14 so that the upper air vent 12 of the hot air passage 14 is provided. A ventilation path 16 is formed between the partition plate 9 and the outside of the main body case 5 between the lower vent 13 and the lower vent 13.

  Further, the back cover 8 is in a multi-opening state that allows ventilation in the vertical and horizontal directions.

  In the above configuration, the main body case 5 is covered with the display unit 4 at the front opening and the partition opening 9 at the rear opening in a watertight state, so that the heat of the display unit 4 and the control unit 6 is absorbed. It will be buried in the main body case 5.

  Therefore, in the present embodiment, the above-described heat radiating unit 7 is provided, and when the blower 11 is driven, the heat in the body case 5 is warm air as indicated by the arrow A in FIG. From the main body case 5 to the warm air passage body 14.

  Then, the warm air passage 14 is moved downward to the lower vent 13 and is blown out again into the main body case 5 by the blower 11.

  At this time, as shown in FIG. 6 (a), the outside air that has entered as indicated by the arrow B from the multi-open rear cover 8 that can be vertically and horizontally ventilated rises along the outer surface of the warm air passage body 14. Thus, heat exchange is performed with the hot air descending in the hot air path body 14, and as a result, the hot air descending in the hot air path body 14 is cooled.

  And this cooling wind is blown by the air blower 11 from the lower vent 13 to the high temperature part of the control part 6, and this is cooled effectively.

  In the present embodiment, the hot air passage body 14 is formed of a synthetic resin. However, since the plate thickness is thin, even if the thermal conductivity of the synthetic resin is smaller than that of the metal, the heat exchange action by convection The heat exchange is sufficient.

  Further, since the warm air passage body 14 of the present embodiment is provided with the air passage 16 on the partition plate 9 side as described above, the outside air that has entered from the back cover 8 also enters the air passage 16 as indicated by the arrow C. As a result, heat exchange between the outside air and the warm air in the warm air passage body 14 can be sufficiently performed.

  7A shows a state in which the horizontally long main body case 5 is installed in the horizontally long state, while FIG. 7B shows a state in which the horizontally long main body case 5 is installed in the vertically long state.

  That is, in order to enhance the display effect, the horizontally long main body case 5 may be installed in a vertically long state as described above.

  When the horizontally long main body case 5 is installed in the vertically long state as described above, the outside air rises linearly in the ventilation passages 16 of the hot air passage bodies 14. Heat exchange with the warm air in the warm air passage body 14 can be sufficiently performed.

  As described above, in the present embodiment, the heat of the display unit 4 and the control unit 6 confined in the main body case 5 is conveyed to the outside of the main body case 5 by the heat radiating unit 7 and is effectively cooled by the outside air. It will be.

  Moreover, since the warm air path body 14 of the heat radiating unit 7 is provided only outside the main body case 5, it is easy to reduce the weight.

  That is, in the present embodiment, the heat inside the display device 1 can be transferred to the outside of the display device 1 by the air blown by the blower 11 without providing heat radiation fins for heat radiation measures inside the display device 1 as in the prior art. Since it can be moved to the heat exchanger 10 arranged on the side to effectively dissipate heat, it is possible to reduce the weight of the heat dissipating unit and the electronic equipment using the heat dissipating unit.

  Moreover, in this embodiment, since the air blower 11 was arrange | positioned in the main body case 5 outer side of the partition plate 9, since the inner side of the main body case 5 of the partition plate 9 will be a mere planar state, the design arrangement | positioning freedom degree of the control part 6 is possible. Get higher.

  Furthermore, since the blower 11 is configured to blow cooling air from the lower vent 13 into the main body case 5, the blowing resistance to the blower 11 does not increase, and a large amount of cooling air can be blown to the control unit 6. And the cooling effect can be enhanced.

  Further, if the cooling air from the lower vent 13 is jetted to the high temperature part of the control unit 6, the cooling effect of the control unit 6 can be further enhanced.

  Furthermore, since the air after cooling passes also for this air blower 11, the lifetime will also be extended.

  On the other hand, when the blower 11 is provided on the upper vent 12 side and air is sucked into the warm air passage body 14 from the upper vent 12 by the blower 11, the ventilation resistance is higher than that in the main body case 5. Since the blown air is pushed into the hot air passage body 14, the amount of blown air is reduced, and as a result, the cooling effect of the control unit 6 is low.

  At this time, since the air whose temperature has increased in the main body case 5 passes through the blower 11, the life of the blower 11 is shortened.

  As described above, the heat dissipating unit of the present invention is mounted on one surface of an electronic device, and partitions a partition between the inside and the outside of the electronic device, and a heat exchanger disposed on the outside of the electronic device of the partition plate. The partition plate has first and second vent holes, and the heat exchanger is configured such that the first vent hole and the second vent hole are provided outside the electronic device of the partition plate. Are connected to the outside of the electronic device of the partition plate, and the air inside the electronic device of the partition plate is connected to the hot air passage from the first vent hole side. Since the blower that blows air to the second vent side through the body is provided, it is possible to reduce the weight of the heat radiating unit and the electronic device using the same.

  In other words, in the present invention, the heat inside the electronic device is transferred to the heat exchanger on the outside of the electronic device by the blower of the blower without providing the heat dissipation fins inside the electronic device as in the prior art. Therefore, it is possible to effectively dissipate heat, and thus it is possible to reduce the weight of the heat dissipating unit and the electronic apparatus using the heat dissipating unit.

  Further, in the present invention, a hot air path body constituting a heat exchanger, and a blower that blows air from the first vent side of the partition plate to the second vent side through the hot air path body, Since the partition plate is provided on the outer side of the electronic device, the design flexibility of the control unit of the electronic device disposed on the inner side of the electronic device of the partition plate is improved.

  Therefore, it is expected to be widely used in outdoor installation type electronic devices.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Shop 3 House 4 Display part 5 Main body case 6 Control part 7 Radiation unit 8 Back cover 9 Partition plate 10 Heat exchanger 11 Blower 12 Upper ventilation hole 13 Lower ventilation hole 14 Hot air path body 14a Lower collecting cylinder 15 Ventilation Space 16 Ventilation path

Claims (13)

A partition plate mounted on one surface of the electronic device and separating the inside and the outside of the electronic device; and a heat exchanger disposed on the outside of the electronic device of the partition plate, the partition plate comprising: The heat exchanger is configured by a hot air passage body that connects the first vent and the second vent on the outside of the electronic device of the partition plate. On the outside of the electronic device of the partition plate, the air inside the electronic device of the partition plate is passed through the hot air passage body from the first vent side to the second vent side. The warm air passage body is connected to the first ventilation port and the second ventilation port in a bridge shape, and the first ventilation port and the second ventilation air of the warm air passage body are provided. A heat radiating unit having a shape having a convection passage between the partition plate and the outside of the electronic device. The heat dissipating unit according to claim 1, wherein the blower is disposed on the second vent side of the warm air passage body. The heat dissipating unit according to claim 2, wherein the blower is disposed in the second vent side of the warm air passage body. The heat dissipation unit according to any one of claims 1 to 3, wherein the first vent hole and the second vent hole of the partition plate are connected by a plurality of hot air passage bodies. The heat radiating unit according to claim 4, wherein the second air vent side of the plurality of warm air passage bodies is gathered, and a blower is disposed on the gathered second vent side. The heat radiating unit according to any one of claims 1 to 5, wherein the blower is attached to the outside of the electronic device of the partition plate. The partition plate has a quadrangular shape, the first vent is disposed on one side inside the partition plate, and the second vent is disposed on the other side facing the one side. The heat dissipation unit described in 1. From the main body case which arrange | positioned the display part in the front side, the control part arrange | positioned in the back side of the said display part of this main body case, and the back surface opening part of the main body case of the back side of this control part. An electronic device comprising the heat dissipation unit according to claim 7 . The electronic device according to claim 8 , wherein a plurality of heat dissipating units are disposed in a back opening of the main body case. The electronic device according to claim 9 , wherein outer surfaces of the plurality of heat radiation units are each covered with a breathable back cover. The electronic device according to any one of claims 8 to 10 , wherein a high temperature part of the control unit is provided in the vicinity of the second vent of the heat dissipation unit. The electronic device according to any one of claims 8 to 11 , wherein the main body case has a horizontally long rectangle, the first vent hole is disposed above the main body case, and the second vent hole is disposed below the main body case. machine. The main body case is a vertically long rectangle, and the first vents are placed on the left and right sides of the main body case.
The electronic device according to any one of the second vents disposed claim 8 to 11 to the other of the left and right of the main body case.

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