JP2006140415A - Heat dissipation structure of electrical apparatus, and recording reproducing device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the heat dissipation structure of an electrical apparatus which can effectively dissipate heat inside a housing even if a plurality of heat generators are installed inside the housing. <P>SOLUTION: A DVD device 6, a BD device 7, a card reader 8, an HD device 9 or the like are installed inside a housing 1 as a plurality of heat generators. The housing 1 has a division plate 18 which divides an inner space into a plurality of divisions 20, 21. A plurality of heat generators are disposed inside a plurality of divisions, and fans 22, 23 are installed as a heat dissipation means for each of a plurality of divisions. The BD device 7 which is at least one of a plurality of heat generators has an individual fan 25 as an individual heat dissipation means for carrying out heat dissipation of the heat generator itself. Heat dissipation exhaust exhausted from an individual fan is introduced to an outside of the housing 1 by a duct 27 constituting a heat dissipation path, and is exhausted from an exhaust hole 26. The duct is connected via a cushioning material 28 to the exhaust hole 26 of the individual fan and/or the housing. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heat dissipation structure of an electric device in which a heating element is installed in a casing, and in particular, when there are a plurality of devices that serve as heating elements in the casing, a plurality of devices that can efficiently dissipate heat and are installed. The present invention relates to a heat radiating structure of an electrical apparatus that can stably operate a plurality of devices by preventing thermal interference, and a recording / reproducing apparatus using the heat radiating structure.

  Conventionally, as an electrical apparatus in which a plurality of devices serving as heating elements are installed in a housing, for example, there is a twin deck type audio device described in Patent Document 1. This audio device has a playback-only deck and a recording-only deck, and both the decoding circuit for the playback-only deck and the encoding circuit for the recording-only deck are integrated into one circuit. Dedicated decks are installed horizontally in the housing.

Japanese Patent Laid-Open No. 2003-287771

  By the way, in the audio apparatus having the above structure, the reproduction-dedicated deck and the recording-dedicated deck are arranged as two heating elements in the casing, and there is a possibility that the temperature in the casing rises. In addition, since the two devices have different heat dissipation depending on the operating state, that is, during standby or during operation, a temperature difference is generated in the housing, causing thermal interference with each other and performing various functions of the audio device. There is a risk of malfunction. In particular, when the heating value of one heating element is large, the heating element having a small heating value may be affected.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an electrical device that can efficiently dissipate heat in the housing in an electrical device in which a plurality of heating elements are installed in the housing. It is to provide a heat dissipation structure. In addition, in the case of providing individual heat dissipating means mounted on the heat generating body itself among a plurality of heat generating elements, the heat of the individual heat dissipating means is dissipated outside the housing through another heat dissipating passage to prevent the temperature inside the housing from rising. The object is to provide a heat dissipation structure for electrical equipment.

  In order to achieve the above object, a heat dissipation structure for an electrical device according to the present invention is a heat dissipation structure for an electrical device in which a plurality of heating elements are installed in the internal space of the housing, and the housing includes a plurality of internal spaces. A partition material that is divided into sections is provided, and a heat radiating means is provided for each of the plurality of sections. The plurality of heating elements include a substrate on which a CPU or the like is fixed, in addition to devices such as a DVD device, a BD device, an HD device, and a card reader. As a partition material, a plate-shaped partition plate is preferable. Moreover, it is preferable that the heat radiating means determine the capacity in accordance with the amount of heat generated by the heating element installed in the compartment. The partition member does not need to divide the internal space of the housing into a plurality of compartments in a sealed state, and the air flow by the heat radiating means may be limited so that the air flow in one compartment does not enter another compartment.

  The heat dissipating structure of the electric device of the present invention configured as described above is installed in a certain compartment because the internal space of the housing is divided into a plurality of compartments by a partitioning material and heat is radiated by the heat radiation means for each compartment. The heat generated by the heating element is dissipated by the heat dissipating means installed in the compartment, so that thermal interference between the plurality of heating elements installed in the housing can be prevented, and efficient heat dissipation becomes possible. As a result, the temperature rise in the housing can be suppressed and the operation and various functions of the electrical equipment can be executed stably. Even when a plurality of heating elements are installed in one section, it is only necessary to provide a heat dissipating means corresponding to the heat dissipation amount of the plurality of heating elements.

  Moreover, as a preferable specific aspect of the heat dissipation structure of the electrical equipment according to the present invention, at least one of the plurality of heat generating elements includes individual heat dissipating means such as a heat dissipating fan that dissipates heat of the heat generating element itself. The heat radiation exhaust discharged from the individual heat radiation means is guided to the outside of the housing by a heat radiation passage passing through the housing. According to this configuration, when the device itself serving as a heating element has individual heat radiating means, the heat exhausted by the individual heat radiating means is not directly exhausted outside the housing to increase the temperature inside the housing, so that efficient heat radiation is achieved. Is possible.

  Furthermore, as another preferable specific aspect of the heat dissipation structure for an electrical device according to the present invention, the heat dissipation passage is constituted by a duct that communicates the individual heat dissipation means and the exhaust hole of the housing. ing. The duct is preferably a pipe. According to this configuration, the exhaust discharged from the individual heat dissipating means provided in the device that is a heating element is not discharged into the casing of the electric device, but is discharged directly to the outside of the casing through the duct. The heat generated in can be efficiently radiated.

  When the heating element having the individual heat radiating means is floatingly supported by the casing, the duct is preferably connected to the exhaust hole via a buffer. In other words, when a device that is a heating element is vulnerable to shock and vibration and is floated and supported from the housing for the purpose of buffering, the duct and the heat generation are sandwiched with a cushioning body such as a rubber cushion or a resin foam. It is preferable to connect the body and / or the housing. With this configuration, even when an impact is applied to the housing or the like, the impact is not directly transmitted to the device that is a heating element via the duct, and the function of the floating supported device is not hindered.

  Moreover, when the heating element having the individual heat radiating means is floatingly supported by the casing, the duct is preferably formed of a flexible material. A bellows-like pipe or a flexible pipe such as rubber is particularly preferable. According to this configuration, the device that is a heating element is not susceptible to shock or vibration, and even when the device is floatingly supported by floating from the housing for buffering purposes, the movement of the device is not hindered. The apparatus can be stably operated without being directly transmitted to the apparatus that is a heating element through the duct.

  A recording / reproducing apparatus according to the present invention is a recording / reproducing apparatus using the heat dissipation structure for an electric device described above. In this recording / reproducing apparatus, for example, a DVD device, an HD device, a BD device or the like is installed as a heating element. According to this configuration, the heat generated from each of the DVD device, the HD device, the BD device, etc., which are heating elements, is kept in the compartment divided by the partition material and does not enter the adjacent compartment, and each compartment Since the heat is dissipated outside the housing by the heat dissipating means installed in the housing, the heat interference between the heat generating devices can be prevented and efficient heat radiation can be achieved.

  The heat dissipating structure of the electric device according to the present invention is configured such that when a device or the like that becomes a plurality of heating elements is installed in a casing, the casing is divided into a plurality of sections, and the heating elements are arranged in each section, and heat is radiated for each section. Since heat radiating means such as a fan is provided, it is possible to efficiently radiate heat by reducing thermal interference between the plurality of heating elements. Further, in the case where the device itself as a heating element includes individual heat radiating means for radiating heat, the efficiency can be further improved by exhausting the exhaust from the heat radiating means directly outside the housing.

  Hereinafter, an embodiment of a heat dissipation structure for an electrical device according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a recording / reproducing apparatus as an electric apparatus using the heat dissipation structure of the electric apparatus according to the present embodiment. FIG. 2 is a perspective view of a state in which a lid on the front surface of the recording / reproducing apparatus of FIG. 3 is a perspective view with the upper plate showing the internal structure of FIGS. 1 and 2 removed, FIG. 4 is a cross-sectional view of the main part along the line AA in FIG. 3, and FIG. FIG. 6 is a perspective view of a state where the upper plate schematically showing FIG. 5 is removed, FIG. 7 is an exploded perspective view of the heat radiation passage portion, and FIG. FIG.

  1 to 6, a recording / reproducing apparatus D of the present embodiment has a plurality of devices that serve as heating elements in a housing 1. A lid 2 is supported on the front surface of the casing so as to be openable and closable. The lid 2 includes display units 3A, 3B, and 3C as display units that indicate an operation state on the front side, and various operation switches 4A, 4B, and 4C on the back side. Various display units 5A, 5B, 5C, a connector unit, and the like are arranged on the front surface of the housing 1 with the lid 2 opened.

  Inside the housing 1, four devices, a DVD (Digital Versatile Disk) device 6, a BD (Blue-ray Disk) device 7, a card reader 8, and an HD (Hard Disk) device 9 are installed as heating elements. . When the lid 2 is opened, an insertion port 6a for inserting a disc into the DVD device 6, an insertion port 7a for inserting a disc into the BD device 7, and an insertion port 8a for inserting a card into the card reader 8 are provided. The card reader 8 is installed below the BD device 7, and the HD device 9 is installed below the DVD device 6. The left display unit 3A displays the operating state of the DVD device 6, the right display unit 3C displays the operating state of the BD device 7, and the central display unit 3B displays the operating state of the HD device 9.

  The housing 1 has receiving portions 1a and 1b whose left and right ends protrude forward, and the lid body 2 is supported in a state of being sandwiched between the left and right receiving portions, and the front surface of the receiving portions 1a and 1b. The front surface of the lid 2 is flat at the same height. The lid 2 is held by a lock mechanism (not shown) in the right receiving portion 1b. When the lock 1c (see FIG. 2) is released, the lid 2 rotates by its own weight, and an opening / closing mechanism in the left receiving portion 1a. (Not shown), the opening / closing speed is controlled by a damper mechanism to open to a horizontal state.

  An appropriate mechanism is used as the lock mechanism of the lid 2, and an appropriate mechanism such as a mechanism that is manually released by pressing a push button or a mechanism that is operated by a remote controller or the like to rotate and open a motor can be used. A power switch 1A is installed in the receiving part 1a, and an open / close switch 1B for the lid 2 is installed in the receiving part 1b. Instead of the open / close switch, the push button may be pushed to release the lock, and the lid 2 may be opened.

  The recording / reproducing apparatus D includes a flat rectangular parallelepiped casing 1, and the casing 1 is provided with a lid 2 including display units 3A, 3B, and 3C on the front surface, a bottom surface portion 11, and left and right side surface portions. 12 and 13, and a back surface portion 14, and an upper surface plate 15 covering the upper portion. Then, as shown in FIG. 5 with the top plate 15 removed and the upper portion of the housing 1 opened, a large number of circular intake holes 11a are arranged in a row at the front portion of the bottom surface portion 11 as intake ports. Is formed. Note that an oval or rectangular intake slit may be formed as the intake port.

  As described above, the recording / reproducing apparatus D includes the DVD apparatus 6, the BD apparatus 7, the card reader 8, and the HD apparatus 9 as a plurality of heating elements in the housing 1. When the four devices are turned on, they enter a standby state, become a heating element, raise the temperature of the device itself, and heat adjacent spaces and contacting members. In this embodiment, the DVD device 6 is installed on the upper left side as viewed from the front, and the HD device 9 is installed on the lower left side. The DVD device 6 and the HD device 9 are fixed by frames F1 and F2. A BD device 7 is installed on the upper right side, and a card reader 8 is installed on the lower right side. The BD device 7 is floatingly supported by the frames F3 and F4.

  That is, since the BD device 7 is a device that is easily affected by vibration and impact, as shown in FIG. 4, the frame F3 and F4 in the housing 1 are interposed via a cushion material 16 such as a spring or rubber. For example, it is supported by four bolts and nuts 17, and the BD device 7 is supported in a state of floating from the frames F 3 and F 4 of the housing 1. With this configuration, the BD device 7 can move slightly in the horizontal direction with respect to the housing 1, and even if an impact or the like is applied to the housing 1, the impact is not directly transmitted to the BD device 7. It is configured.

  A partition plate 18 that divides the internal space into two right and left compartments is disposed vertically between the DVD device 6 and the BD device 7 in the housing 1, and the inside of the housing 1 is divided into left and right partitions by the partition plate 18. It is divided into 20, 21. As a result, the DVD device 6 and the HD device 9 are installed in the left compartment 20, and the BD device 7 and the card reader 8 are installed in the right compartment 21. The partition plate 18 is formed in a rectangular shape from a synthetic resin plate material, and is partly cut away in order to avoid a part where the rear lower part is installed. The length of the partition plate 18 is about two-thirds of the length in the front-rear direction of the housing, the rear end is close to the back surface portion 14, and the front end has a front space between the front surface portion. A main board or the like is located in the front space.

  The back surface portion 14 is formed of a metal plate material, and heat radiating fans 22 and 23 are fixed as exhaust type heat radiating means corresponding to the respective sections 20 and 21. Therefore, the heat discharged from the DVD device 6 and the HD device 9 installed in the left compartment 20 is radiated from the exhaust slit on the back surface through the left heat radiating fan 22, and the BD installed in the right compartment 21. The heat discharged from the device 7 and the card reader 8 is radiated from the exhaust slit on the back surface through the right heat radiating fan 23.

  Further, the BD device 7 installed at the upper part of the right compartment 21 is provided with an individual fan 25 for radiating heat of the device itself on the back surface side, and this individual fan radiates heat inside the BD device 7 to the outside of the device. To do. An exhaust hole 26 formed of a plurality of slits is formed on the back surface portion 14 at a position facing the fan 25 of the BD device 7, and a duct 27 connects the exhaust hole and the fan 25. With this configuration, the heat radiated exhaust discharged from the fan 25 of the BD device 7 is guided to the outside of the housing 1 through the heat radiating path including the duct 27 and the exhaust hole 26.

  As shown in detail in FIGS. 7 and 8, the duct 27 connecting the exhaust hole 26 of the housing 1 and the individual fan 25 fixed to the BD device 7 is a rectangular tube having a rectangular cross section and an intermediate portion. The shape is shifted in parallel. The duct 27 is fixed to the frame or the like of the housing 1 via the frame 27a. The duct 27 is fixed in a state where a cushion material 28 formed of a cushioning material is sandwiched between the inlet portion and the outlet portion and the back surface portion 14 having the fan 25 and the exhaust hole 26. In other words, the contact portion between the inlet and the outlet of the duct 27 is joined in close contact with the cushion material 28 so as to be movable, and has a structure that does not hinder the relative movement between the housing 1 and the BD device 7, and is radiated and exhausted. It is the composition which does not leak.

  With this configuration, even when an impact is applied to the housing 1, the impact is prevented from being transmitted to the BD device 7 from the duct 27 connected to the back surface portion 14 of the housing 1 by a cushion material 28 such as rubber. Further, since the BD device 7 is floatingly supported by the frames F2 and F3 via the cushion material 16, and the impact is not directly transmitted, the BD device can be stably operated. The exhaust gas discharged from the BD device 7 is discharged outside the housing without leaking into the housing 1, and the temperature in the compartment 21 of the internal space does not rise due to heat radiation of the BD device 7.

  The operation of the heat dissipating structure of the electric device according to this embodiment configured as described above will be described below. In the heat dissipation structure of the recording / reproducing apparatus D of the present embodiment configured as described above, when the power is turned on and the DVD device 6, the BD device 7, the card reader 8, and the HD device 9 become operable, the back surface portion 14. The fans 22 and 23 fixed to the fan are activated, and the heat discharged from the devices 6 to 9 as the four heating elements is discharged outside the housing 1. That is, the heat generated in the compartment 20 by the activation of the DVD device 6 and the HD device 9 is exhausted to the outside of the housing 1 by the fan 22, and is generated in the compartment 21 by the activation of the BD device 7 and the card reader 8. Heat is exhausted to the outside of the housing 1 by the fan 23, and fresh air is supplied from the intake holes 11 a of the bottom surface portion 11. Further, the heat radiation exhaust discharged from the inside by the activation of the BD device 7 is directly discharged from the exhaust hole 26 to the outside of the housing 1 through the duct 27 by the individual fan 25 attached to the BD device main body.

  As described above, the heat generated when the DVD device 6, the BD device 7, the card reader 8, and the HD device 9, which are a plurality of heating elements, are activated by the fans 22 and 23 installed in the respective sections 20 and 21. Since fresh air is supplied to the outside of the body 1 and is supplied from the air intake holes 11a formed in the bottom surface portion 11 of the housing, there is no mutual heat interference in the right and left compartments within the housing, and the efficiency It is well evacuated and does not generate a high temperature area in the housing, so that the operating state of the electrical equipment is stabilized. In particular, in the left compartment 21 where the two devices of the BD device 7 and the card reader 8 are arranged, the heat generated from the BD device is exhausted by the fan 25 in the device, and through the dedicated duct 27 through the exhaust hole 26. Since it is discharged to the outside of the body 1, it is not exhausted into the housing and does not raise the temperature of the left compartment 21.

  That is, when there is no partition plate 18 that divides the inside of the housing 1 into two compartments 20 and 21, heat generated from each of the four DVD devices 6, the BD device 7, the card reader 8, and the HD device 9, which are heat sources. Since it enters and affects the section where the adjacent device is located, efficient exhaust cannot be performed. In the heat dissipation structure of the housing 1 of the present embodiment, the DVD device 6 and the HD device 9 serving as heating elements are located in the compartment 20, and the BD device 7 and the card reader 8 are located in the compartment 21. Since the fans 22 and 23 are attached to each other, heat can be exhausted without mutual interference of heat. Since the BD device 7 is exhausted through the duct 27 to the outside of the housing 1 by the individual fans 25 attached to the device, there is no influence of heat in the housing.

  Next, another embodiment of the present invention will be described in detail with reference to FIG. FIG. 9 is a perspective view in which a main part showing another embodiment of the heat dissipation structure for an electric device according to the present invention is disassembled. Note that this embodiment is different from the above-described embodiment in that a duct that constitutes a heat radiation path that guides exhaust discharged from individual fans installed in the heating element to the outside of the housing is formed from a flexible bellows tube. It is configured. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 9, the individual fans 25 included in the BD device 7 that is a heating element and the exhaust holes 26 of the housing 1 are connected by a bellows tube 30. The bellows tube 30 is formed by, for example, coating a coiled metal wire with a film or the like, and fixing plates 31 and 32 fixed to both ends are connected to the case of the BD device 7 on the individual fan 25 side and the exhaust of the housing 1. It is fixed to the back surface portion 14 so as to surround the hole 26. With this configuration, heat in the BD device 7 is discharged to the outside of the housing 1 through the bellows tube 30. The bellows tube 30 has flexibility, and the fixed plate 31 at the entrance and the fixed plate 32 at the exit are flexibly connected at an intermediate coil-shaped portion. For this reason, the movement of the BD device 7 supported in a floating state from the housing 1 is not hindered, and an impact applied to the housing 1 is not directly transmitted to the BD device 7.

  In the heat radiating structure of this embodiment, the two sections are radiated by the heat radiating fans installed in the respective sections, and the exhaust from the individual fans 25 passes through the bellows tube 30 from the exhaust hole 26 to the housing 1. It is discharged outside. As described above, the plurality of sections are radiated by the heat dissipating fans installed in the respective sections, and the exhaust from the individual fans 25 mounted on the BD device 7 is not discharged into the housing 1 but directly in the housing. Since the air is discharged from the exhaust hole 26 to the outside of the body, it is possible to prevent thermal interference between a plurality of devices that are heating elements, to efficiently dissipate heat, and to stabilize the functions of the plurality of devices.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed. For example, the flexible duct that connects the device fan, which is an individual heat dissipation means, and the exhaust hole of the housing may be formed of a soft rubber pipe material.

  Although an example has been described in which the exhaust holes of the housing for exhausting heat discharged from individual heat dissipating means installed in the heating element are formed on the back surface of the housing, they may be formed on the side surface or top surface of the housing. . Further, the intake holes formed in the bottom plate of the housing may be slits or the like. Although an example of an exhaust type heat radiating fan has been shown as the heat radiating means, it may be configured to radiate heat from an exhaust slit or an exhaust hole using an intake type heat radiating means. A sirocco fan may be used as the heat dissipation fan. The shock absorber sandwiched between the connecting portion between the duct and the housing and the connecting portion between the duct and the heating element may be formed of a ring-shaped sponge.

  As an example of use of the present invention, a heat dissipation structure in which a partition plate is fixed as a partition material in a housing and the interior is divided into a plurality of compartments, and applied to a housing such as a personal computer incorporating a hard disk device, a DVD device, etc. it can.

The perspective view of one Embodiment of the recording / reproducing apparatus provided with the thermal radiation structure of the electric equipment which concerns on this invention. The perspective view of the state which opened the cover body of FIG. The perspective view seen from the front side of the state which removed the upper plate of the housing | casing of FIG. The principal part sectional view which follows the AA line of FIG. 3 which shows the part by which the heat generating body is floating-supported. The perspective view seen from the back side of the state which removed the upper plate of the housing | casing of FIG. The perspective view of the state which removed the upper board which shows FIG. 5 typically. The perspective view which decomposes | disassembles and shows a thermal radiation channel | path part. Sectional drawing of the principal part of the thermal radiation passage part of FIG. The perspective view of the state which decomposed | disassembled the principal part which shows other embodiment of the recording / reproducing apparatus provided with the thermal radiation structure of the electric equipment which concerns on this invention.

Explanation of symbols

  1: Housing, 11a: Intake hole, 6: DVD device (heating element), 7: BD device (heating element), 8: Card reader (heating element), 9: HD device (heating element), 16: Cushion material ( 18): Partition plate (partition material), 20, 21: Partition, 22, 23: Heat radiation fan (heat radiation means), 25: Individual fan (individual heat radiation means), 26: Exhaust hole, 27: Duct (heat radiation) 28) Cushion material (buffer), 30: Bellows tube (duct)

Claims (6)

A heat dissipation structure for an electrical device in which a plurality of heating elements are installed in the internal space of the housing,
The housing includes a partition member that divides an internal space into a plurality of sections, and a heat radiating unit is installed in each of the plurality of sections.   At least one of the plurality of heating elements is provided with individual heat radiating means for radiating heat from the heat generating body itself, and radiated exhaust exhausted from the individual heat radiating means is guided to the outside of the casing by a heat radiating passage. The heat dissipation structure for an electric device according to claim 1.   The heat dissipation structure for an electric device according to claim 2, wherein the heat dissipation path is configured by a duct that allows the individual heat dissipation means and the exhaust hole of the housing to communicate with each other.   The heating element having the individual heat radiating means is floatingly supported by the casing, and the duct is connected to the individual heat radiating means and / or an exhaust hole of the casing via a buffer. Item 4. A heat dissipation structure for electrical equipment according to Item 3.   4. The heat dissipation structure for an electrical device according to claim 3, wherein the heating element having the individual heat dissipation means is floatingly supported by the casing, and the duct has flexibility.   6. A recording / reproducing apparatus using the heat dissipation structure for an electric device according to claim 1.

Images