JP5347931B2 - 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, and a control unit for 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 years, the display portion of a television receiver has become extremely large. Therefore, efforts to install it outdoors as an advertising device using the high display effect have been activated.

  In this case, in order to use it outdoors, it is necessary to take a sealed structure so that water does not enter the main body case. For this reason, the back side of the main body case is sealed with a partition plate.

  However, if such a sealed structure is adopted, the display unit and the control unit cannot sufficiently dissipate heat.

  Therefore, conventionally, the partition plate provided on the rear side of the main body case is made of metal, and a plurality of metal fins are provided inside and 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, the air in the main body case is agitated with a blower to first transfer the heat in the main body case to the fins and the partition plate in the main body case, and then to the fins outside the main body case by the heat conduction of the partition plate. Then, heat is dissipated 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.

  And in order to achieve this object, the heat radiating unit of the present invention is mounted on one surface of an electronic device, and partitions the interior and the exterior of the electronic device, and the partition plate external to the electronic device. A heat exchanger disposed on the side and a blower disposed on the inner side of the electronic device of the partition plate, the partition plate having a plurality of upper vents at predetermined intervals in the lateral direction above the partition plate, A plurality of lower vent holes are provided at predetermined intervals in the lateral direction below, and the heat exchange body has the plurality of upper vent holes and a plurality of lower vent holes on the outside of the electronic device of the partition plate. Each of the openings is connected to each other in the form of a bridge in the vertical direction by a hot air passage body, and the space between the upper and lower ventilation holes of the hot air passage body is between the outside of the electronic device of the partition plate. The first air passage is established in the It is intended to achieve the target.

  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, a heat exchanger disposed on the outside of the electronic device of the partition plate, A blower disposed on the inner side of the electronic device of the partition plate, and the partition plate has a plurality of upper vents at a predetermined interval in the lateral direction above the partition plate, and a predetermined interval in the lateral direction below the partition plate. The heat exchanger has a plurality of upper vents and a plurality of lower vents vertically connected by hot air passages on the outside of the electronic device of the partition plate. The first air passage is provided between the upper air vent and the lower air vent of the warm air passage body and the outside of the electronic device of the partition plate. Therefore, the heat dissipation unit and the electronics using this It is possible to reduce the weight of the vessel.

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

The perspective view which shows the example of installation of Embodiment 1 of this invention Perspective view of the back side Exploded perspective view of the back side (A) Rear side exploded perspective view showing the configuration of the heat dissipation unit (b) Front side exploded perspective view showing the configuration of the heat dissipation unit (A) and (b) are cross-sectional views of the same heat dissipation unit (A) Perspective view explaining the horizontal installation state (b) Perspective view explaining the vertical installation state The disassembled perspective view which shows Embodiment 2 of this invention (A) and (b) are cross-sectional views of the same heat dissipation unit (A) Rear side exploded perspective view showing the configuration of the heat dissipation unit (b) Front side exploded perspective view showing the configuration of the heat dissipation unit Perspective view showing the configuration of the heat dissipation unit

  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, which can display advertisements in addition to the function as a television receiver.

  Accordingly, in FIG. 1, the display device 1 is installed under the eaves 3 of the store 2, that is, outdoors, and the horizontally long display unit 4 is exposed in the outdoors.

  As shown in FIGS. 2 and 3, the display device 1 includes a horizontally long main body case 5 having an open front surface and a rear surface, the display portion 4 disposed in a watertight state in a front opening portion of the main body case 5, A control unit 6 that is disposed inside the main body case 5 and controls the display unit 4, a plurality of heat radiation units 7 that are disposed in a watertight state in the rear opening of the main body case 5, and the heat radiation unit 7 And a back cover 8 that covers the back side of the back in a ventilation state. In the present embodiment, as shown in FIG. 3, the three heat radiation units 7 are arranged side by side so that the back opening of the main body case 5 is covered with a plurality of heat radiation units 7 in a watertight state.

  Further, as shown in FIGS. 4 and 5, the three heat radiating units 7 are mounted on the rear opening of the main body case 5 constituting the display device 1, and partition the inside and the outside of the main body case 5 in a watertight state. In a vertically long state, a metal partition plate 9, a plurality of heat exchangers 10 disposed on the outside of the main body case 5 of the partition plate 9, and a plurality of heat exchangers 10 disposed on the inner side of the main body case 5 of the partition plate 9. The blower 11 is provided. In addition, although the partition plate 9 of the three heat radiating units 7 is a vertically long rectangle 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 three heat radiating units 7 are made into one heat radiating unit 7, the partition plate 9 becomes one horizontally long rectangular shape.

  As shown in FIG. 4, the partition plate 9 is provided with a plurality of upper vents 12 at predetermined intervals in the lateral direction above it, and in the lateral direction below it as can be understood from FIG. A plurality of lower vent holes 13 are provided at predetermined intervals.

  Further, as shown in FIGS. 3 to 5, the heat exchanger 10 includes the plurality of upper vents 12 and the plurality of lower vents 13 on the outside of the main body case 5 of the partition plate 9. Each of them has a structure in which a vertically long hot air passage body 14 is connected in a bridge shape in the vertical direction.

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

  In addition, as shown in FIG. 5, the blower 11 blows air inside the main body case 5 in order from the upper vent 12 of the partition plate 9 to the inside of the hot air passage body 14 and to the lower vent 13. In order to reduce the ventilation resistance in this case, the lower vent 13 has a larger opening area than the upper vent 12.

  Further, as shown in FIG. 4B, when the upper vent 12 of the partition plate 9 is formed, the partition plate 9 corresponding to the upper vent 12 is placed on the main body case along the vertical center line. 5, the protruding guide body 15 is formed between the adjacent upper vents 12.

  That is, since the number of the upper vents 12 is larger than the number of the blowers 11, the guide body 15 is formed in order to effectively distribute the warm air from the smaller blowers 11 to the larger upper vents 12.

  Note that the lower vent 13 is adjacent to the lower vent 13 by cutting up the partition plate 9 corresponding to the lower vent 13 to the inside of the main body case 5 along the vertical center line. A projecting guide body 15 is formed between the lower vents 13.

  That is, the air blown out from the lower vent 13 can be prevented from increasing the airflow resistance due to the rapid expansion of the flow path by the guide body 15 provided in the vicinity of the lower vent 13.

  Further, in the present embodiment, between the upper vent 12 and the lower vent 13 of the warm air passage body 14, between the upper side of the main body case 5 of the partition plate 9 and the lower vent 12. The ventilation passage 16 is provided by connecting the vent hole 13 in the longitudinal direction by a vertically long hot air passage body 14.

  Further, the back cover 8 is in a multi-opened state allowing ventilation in the vertical and horizontal directions, and a ventilation path 17 is provided between the back cover 8 and the hot air path body 14 as shown in FIG.

  Note that the mounting plate 18 in FIG. 4 is a plate provided at the top and bottom to integrate the plurality of upper vents 12, and is not shown in portions corresponding to the upper vents 12 and the lower vents 13. Is provided with an opening.

  In the above configuration, the main body case 5 has the front opening covered with the display unit 4 and the rear opening covered with the partition plate 9 in a watertight state. It will be confined in case 5.

  Therefore, in the present embodiment, the above-described heat radiating unit 7 is provided, and when the blower 11 is driven, as shown in FIG. 5B, the heat in the body case 5 is heated as hot air from the upper vent 12 to the hot air passage body. 14, that is, conveyed outside the main body case 5.

  Thereafter, the air cooled in the hot air passage body 14 is conveyed from the lower vent 13 into the main body case 5, and the control unit 6 is thereby cooled.

  As shown in FIG. 5 (a) and FIG. 6 (a), the warm air passage body 14 is cooled by the outside air that has entered from the back cover 8 in a multi-open state that allows ventilation up and down and left and right. It is performed by ascending along the surface of the body 14.

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

  Moreover, since the warm air path body 14 of this embodiment is provided with the ventilation path 16 on the partition plate 9 side, it seems that only the ventilation path 16 cannot separate the rising path, but the upward flow of the outside air Since this is due to a draft action due to a temperature rise, a sufficient draft action can be obtained with this hot air passage body 14, and as a result, heat exchange between the outside air and the hot air in the hot air passage body 14 can be sufficiently performed. It becomes.

  FIG. 6B 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 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.

(Embodiment 2)
7 to 10 show (Embodiment 2) of the present invention, and the same parts as those in the above (Embodiment 1) are denoted by the same reference numerals to simplify the description.

  In this (Embodiment 2), as shown in FIG. 7 to FIG. 10, between the upper vent 12 and the lower vent 13 of the warm air passage body 14, between the outside of the main body case 5 of the partition plate 9. A plurality of rectifying guides 19 that are substantially perpendicular to the warm air passage body 14 are provided in the ventilation passage 16 formed at a predetermined interval.

  That is, as shown in FIG. 6B, when the horizontally long main body case 5 is installed in the vertically long state, the outside air that rises linearly in the ventilation path 16 of each warm air passage body 14 is rectified by the rectification guide 19. Under the action, it raises smoothly.

  The rectifying guide 19 is made of metal, and the heat of the main body case 5 is also conducted from the metal partition plate 9, so that the heat dissipation effect can be enhanced.

  Moreover, in this embodiment, as shown in FIG. 8, the heat conductor 20 which conducts heat from the control part 6 to the metal partition plate 9 is provided, and the heat dissipation effect can be enhanced.

  Further, since the hot air passage body 14 is made of synthetic resin as described above, the tip of the rectifying guide 19 provided at the central portion between the upper vent 12 and the lower vent 13 of the hot air passage 14 is shown in FIG. As shown in (b), the hot air passage body 14 made of synthetic resin can be prevented from being deformed by heat by contacting and supporting the hot air passage body 14.

  The tip of the rectifying guide 19 provided on both sides of the central portion of the warm air passage body 14 between the upper vent 12 and the lower vent 13 is connected to the warm air passage 14 as shown in FIG. Is in a non-contact state, thereby preventing the upper and lower ends of the warm air passage body 14 from floating from the upper vent 12 and the lower vent 13.

  Further, the width of the rectifying guide 19 is made smaller than the width in the direction perpendicular to the upper vent 12 and the lower vent 13 of the warm air passage body 14.

  In other words, when the rectifying guide 19 extends between the left and right hot air passage bodies 14, when the main body case 5 is placed horizontally as shown in FIG. Since the ascending force is weakened, the width of the rectifying guide 19 is made smaller than the width of the warm air passage body 14 in the direction perpendicular to the upper vent 12 and the lower vent 13 in order to avoid this.

  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. And a blower disposed on the inner side of the electronic device of the partition plate, and the partition plate has a plurality of upper vents with a predetermined interval in the upper lateral direction and a predetermined interval in the lower lateral direction. A plurality of lower vents, and the heat exchanger has a plurality of upper vents and a plurality of lower vents on the outside of the electronic device of the partition plate. The first air passage is connected to the outside of the electronic device of the partition plate between the upper vent and the lower vent of the warm air passage body. Because it is provided, the heat dissipation unit and this Weight of electronic equipment using can be achieved.

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

  Therefore, it is widely used for outdoor 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 15 Guide body 16,17 Ventilation path 18 Mounting plate 19 Rectification guide 20 Thermal conductor

Claims (15)

A partition plate that is attached to one surface of the electronic device and partitions the inside and the outside of the electronic device, a heat exchanger disposed outside the electronic device of the partition plate, and the electronic device of the partition plate The partition plate has a plurality of upper vents with a predetermined interval in the lateral direction above it and a plurality of lower vents with a predetermined interval in the lateral direction below it. In the heat exchanger, on the outside of the electronic device of the partition plate, the plurality of upper vents and the plurality of lower vents are respectively connected in a bridge shape in the vertical direction by hot air passage bodies. A heat dissipating unit having a first air passage between the upper vent and the lower vent of the warm air passage body between the partition plate and the outside of the electronic device. The heat dissipation unit according to claim 1, wherein the partition plate is rectangular or square. The blower is configured to blow air inside the electronic device from the upper vent of the partition plate into the warm air passage, and the lower vent has a larger opening area than the upper vent. Or the thermal radiation unit of 2. Between the upper vent and the lower vent of the hot air passage body, the first air passage formed between the partition plate and the outside of the electronic device has a plurality of air passages substantially perpendicular to the hot air passage body. The heat dissipation unit according to any one of claims 1 to 3, wherein the rectifying guides are provided at predetermined intervals. The heat dissipation unit according to any one of claims 1 to 4, wherein the warm air passage body is made of a synthetic resin, and the rectifying guide is made of metal. The heat dissipation unit according to claim 5, wherein the partition plate is made of metal. 7. The heat dissipation unit according to claim 5, wherein a tip of a rectifying guide provided at a central portion between an upper vent and a lower vent of the hot air passage is in contact with the hot air passage. The heat dissipation unit according to claim 7, wherein tips of the rectifying guides provided on both sides of the central portion between the upper and lower vents of the hot air passage body are not in contact with the hot air passage body. . The heat radiating unit according to any one of claims 4 to 8, wherein a width of the rectifying guide is smaller than a width in a direction perpendicular to the upper vent and the lower vent of the warm air passage body. The number of upper vents is larger than the number of blowers, and a partition plate portion corresponding to the upper vent portion is cut and raised on the inner side of the electronic device on the inner side of the upper vent electronic device. The heat dissipation unit according to any one of claims 1 to 9, wherein the protruding guide body is provided. The number of lower vents is larger than the number of blowers, and the partition plate part corresponding to the lower vent part is cut and raised on the inner side of the electronic equipment on the inner side of the electronic equipment of the lower vent The heat dissipation unit according to any one of claims 1 to 10, wherein the protruding guide body is provided. The heat dissipation unit according to any one of claims 1 to 11, wherein the partition plate is brought into contact with a heat-generating component of the electronic device via a heat conductor. 13. The heat dissipation according to claim 1, wherein an opening is provided on the back side of the main body case provided with a display unit on the front side, a control unit for the display unit on the inside, and the opening on the back side. An electronic device in which the units are arranged so that the hot air path body of the heat radiating unit is on the outer surface side of the main body case. The electronic device according to claim 13, wherein a back cover that covers a side of the hot air path body opposite to the opening of the main body case is provided, and a second ventilation path is provided between the back cover and the hot air path body. . The electronic device according to claim 13 or 14, wherein the opening provided on the back side of the main body case covers the partition plates of the plurality of heat radiation units side by side.

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