JP5516291B2 - 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 such as 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 broken.

  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.

  In such a heat dissipation structure, only the sensible heat is released from the metal fin to the outside. That is, the moisture content inside such an electronic device is not released to the outside due to its sealing structure, and in some cases, condensation occurs in the electronic device, which may adversely affect the electronic device. .

  SUMMARY OF THE INVENTION The present invention aims to reduce the weight of a heat dissipation unit and an electronic device using the heat dissipation unit, to efficiently exchange heat, and to recover the humidity present in the electronic device.

  In order to achieve this object, the heat radiating unit of the present invention is mounted on one surface of an electronic device, partitions a partition between the inside and the outside of the electronic device, and the electronic device outside the partition plate. The partition plate has first and second vent holes, and the heat exchanger has the first vent port on the outside of the electronic device of the partition plate. It comprises a plurality of hot air passage bodies connected in a cross-linked manner to the second ventilation port, and the air inside the electronic device inside the partition plate is connected to the outside of the electronic device on the partition plate. A blower that blows air from the vent side to the second vent side through the warm air passage body is provided, and is provided on the inner surface side of at least one of the first vent and the second vent. A moisture trap groove is provided on the lower side of the air passage body so that the desired It is intended to achieve the purpose.

  As described above, the heat dissipation unit of the present invention is mounted on one surface of an electronic device, and includes a partition plate that partitions the inside and the outside of the electronic device, and a heat exchanger that is 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 bridges the first vent port and the second vent port outside the electronic device of the partition plate. A plurality of hot air passage bodies connected in a shape, and on the outside of the electronic device of the partition plate, the air inside the electronic device of the partition plate is supplied from the first vent side to the hot air. A blower is provided for blowing air to the second vent through the road body, and is on the inner surface side of at least one of the first vent and the second vent, and below the hot air path body Since the moisture trap groove is provided on the side where the Reducing the weight of an electronic apparatus using the, strive to efficient heat exchange, it is possible to recover the moisture content in the electronic device.

  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 outside of the electronic device, the degree of freedom in design and arrangement of the control unit of the electronic device disposed on the inside of the partition plate is improved.

  In addition, when moisture enters the electronic device, the moisture containing air is cooled and condensed when it passes through the hot air passage body. However, the condensed moisture is trapped in the moisture trap groove provided in the first or second vent, and the adverse effect of moisture on the electronic device is reduced.

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 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) Upper vent cutaway view of the heat radiating unit (b) Upper vent perspective view (A) Lower vent cutaway view of the heat radiating unit (b) Lower vent perspective view (A) Rear perspective view showing the outside air ventilation direction of the heat radiating unit (b) Perspective view with changed 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 shown in FIG. 3 that controls the display unit 4 and is disposed on the back side of the display unit 4 inside the main body case 5, and the back surface of the main body case 5 It includes ten (a plurality of examples) heat dissipating units 7 that cover the opening in a divided state and are arranged 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. ing.

  In this embodiment, as can be understood from FIG. 3, ten heat radiating units 7 are arranged side by side on the back surface of the main body case 5, and the rear opening of the main body case 5 is formed by these ten heat radiating units 7. It is configured to cover in a watertight state.

  Further, the ten heat radiating units 7 are attached to the rear opening of the body case 5 constituting the display device 1 as shown in FIGS. As shown in FIGS. 3 and 4, the heat radiating unit 7 includes a vertically long, rectangular metal partition plate 9 that partitions the inside and outside of the main body case 5 in a watertight state, and the main body case 5 of the partition plate 9. The heat exchanger 10 disposed on the outside of the main body case 5 and the blower 11 disposed on the outside of the main body case 5 of the partition plate 9 are also provided.

  In addition, although the partition plate 9 of the heat radiating unit 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 ten heat radiating units 7 are made into one heat radiating unit 7, the partition plate 9 becomes one horizontally long rectangular shape.

  Further, as can be understood from FIG. 3, each of the ten partition plates 9 is provided with an upper vent 12 serving as a first vent on the inner side (lower side) of the upper side and opposed to the upper side. A lower vent 13 serving as a second vent is provided on the inner side (upper side) of the lower side.

  Further, as shown in FIGS. 4 to 6, the heat exchanger 10 has an upper vent 12 and a lower vent 13 formed by a plurality of vertically long hot air passages 14 on the outside of the main body case 5 of the partition plate 9. It is structured to be connected in a bridge shape in the vertical direction.

  That is, the warm 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 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.

  Further, in the plurality of hot air passage bodies 14, an air passage 16a is provided between the adjacent hot air passage bodies 14 respectively.

  Furthermore, 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 A ventilation path 16 b is formed between the lower vents 13 and the outside of the main body case 5 of the partition plate 9.

  Furthermore, the back cover 8 is in a multi-opened 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, as described above, the warm air passage body 14 of the present embodiment is provided with the air passage 16b on the partition plate 9 side, so that the outside air that has entered from the back cover 8 also enters the air passage 16b 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.

  FIG. 9A shows a state in which the horizontally long main body case 5 is installed in the horizontally long state. FIG. 9B shows a state in which the horizontally long main body case 5 is installed in a 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 16b of the hot air passage bodies 14, and in this case as well, the outside air And 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 arrangement design freedom degree of the control part 6 is provided. 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.

  Here, other characteristic parts of the present embodiment will be described.

  That is, as shown in FIGS. 7 and 8, a plurality of hot air passage bodies 14 are provided so as to merge at the portion of the lower collecting cylinder 14 a. A blower 11 is provided inside the joined lower collecting cylinder 14a.

  FIG. 7 is a detailed view of the lower vent 13.

  As described above, the blower 11 is attached to the lower vent 13 provided in the partition plate 9, and further, the lower collecting cylinder 14 a of the heat exchanger 10 is provided so as to cover the blower 11. A moisture trap groove 17a is provided inside the lower collecting cylinder 14a.

  According to such a configuration, the warmed air passes through the hot air passage body 14 from the upper vent 12 to the lower vent 13 in the display device 1. And the air which passes the inside of the warm air path body 14 is cooled when external air passes the ventilation path 16a and the ventilation path 16b. At this time, the water that has entered the display device 1 is cooled to the outside air and becomes condensed water in the hot air passage body 14. This condensed water travels along the inner wall surface of the hot air passage body 14 and accumulates in the moisture trap groove 17a.

  That is, moisture condensed in the hot air passage body 14 is not returned to the display device 1 again, and stable operation of the display device 1 is performed. In addition, the moisture trap groove 17a is provided in the vicinity of the lower vent 13 on the downstream side in the hot air passage body 14, and the moisture moves along the air flow in the hot air passage body 14, so that the display is efficiently performed. Water in the device 1 can be recovered.

  Furthermore, moisture trap grooves 17b may be provided on both side surfaces of the lower collecting cylinder 14a. In this case, as shown in FIG. 9B, moisture can be trapped even when the display device 1 is installed vertically.

  Further, the moisture trap groove 17a and the moisture trap groove 17b may be filled with a hygroscopic agent. By filling the hygroscopic agent, moisture is surely captured.

  Further, a drain plug may be provided in the moisture trap groove 17a and the moisture trap groove 17b. By removing this drain plug at the time of maintenance, it becomes possible to discharge the moisture collected in the moisture trap groove 17a and the moisture trap groove 17b to the outside of the apparatus.

  Further, as shown in FIG. 8, not only the lower vent 13 but also the water trap groove 18a and the moisture trap groove 18b may be provided in the hot air passage body 14 near the upper vent 12. Depending on the layout of the control unit 6 in the display device 1, the heat radiating unit 7 may be mounted so that the upper vent 12 is on the lower side.

  In this case, although the flow of air in the hot air passage body 14 is reversed, a moisture trap groove 18a and a moisture trap groove 18b are provided in the upper vent 12 so that the dew condensation water flowing downward is trapped. And good.

  The moisture trap groove 17a, the moisture trap groove 17b, the moisture trap groove 18a, and the moisture trap groove 18b are provided on the outer peripheral side of the hot air passage body 14, and are not provided on the surface facing the ventilation passage 16b. This is because, in the upper vent, the groove is provided only on the top surface side or the side surface side, and moisture does not accumulate on the upper side.

  As described above, the heat dissipation unit of the present invention is mounted on one surface of an electronic device, and includes a partition plate that partitions the inside and the outside of the electronic device, and a heat exchanger that is 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 bridges the first vent port and the second vent port outside the electronic device of the partition plate. A plurality of hot air passage bodies connected in a shape, and on the outside of the electronic device of the partition plate, the air inside the electronic device of the partition plate is supplied from the first vent side to the hot air. A blower is provided for blowing air to the second vent through the road body, and is on the inner surface side of at least one of the first vent and the second vent, and below the hot air path body Since the moisture trap groove is provided on the side where the Reducing the weight of an electronic apparatus using the, strive to efficient heat exchange, it is possible to recover the moisture content in the electronic device.

  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 the heat dissipating fins inside the opposite 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 outside of the electronic device, the degree of freedom in design and arrangement of the control unit of the electronic device disposed on the inside of the partition plate is improved.

  In addition, when moisture enters the electronic device, the moisture containing air is cooled and condensed when it passes through the hot air passage body. However, the condensed moisture is trapped in the moisture trap groove provided in the first or second vent, and the adverse effect of moisture on the electronic device is reduced.

  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 16a Ventilation Channel 16b Ventilation channel 17a Moisture trap groove 17b Moisture trap groove 18a Moisture trap groove 18b Moisture trap groove

Claims (11)

A partition plate mounted on one surface of the electronic device and separating the inside and the outside of the electronic device;
A heat exchanger disposed outside the electronic device of the partition plate,
The partition plate has first and second vent holes,
The heat exchanger is configured by a plurality of hot air passage bodies in which the first vent and the second vent are connected in a cross-linked manner on the outside of the electronic device of the partition plate,
On the outside of the electronic device of the partition plate, air inside the electronic device of the partition plate is moved from the first vent side to the second vent side through the hot air passage body. A heat dissipating unit provided with a blower for blowing air, and provided with a moisture trap groove on the inner surface side of at least one of the first vent and the second vent and on the side below the air passage of the hot air passage body . 2. The heat radiating unit according to claim 1, wherein the moisture trap groove is provided in the warm air passage and in the vicinity of both the first vent and the second vent. The heat radiating unit according to claim 1, wherein a moisture absorbent is filled in the moisture trap groove. The heat release groove according to any one of claims 1 to 3, wherein the moisture trap groove is provided on a surface of the first vent hole and / or the second vent hole except for a bridging inner side of the warm air passage body. unit. The heat dissipation unit according to any one of claims 1 to 4, wherein a drain plug is provided in the moisture trap groove. 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 5. The electronic device according to claim 6, wherein a plurality of heat radiation units are arranged in a back opening of the main body case. The electronic device according to claim 7, 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 6 to 8, wherein a high-temperature portion of the control unit is provided in the vicinity of the second vent of the heat dissipation unit. 10. The electronic device according to claim 6, wherein the main body case has a horizontally long rectangle, the first air vent is disposed above the main body case, and the second air vent is disposed below the main body case. machine. 11. The main body case has a vertically long rectangle, and a first vent is disposed on one of the left and right sides of the main body case, and a second vent is disposed on the left and right of the main body case. Electronic equipment described in one.

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