JP2005123472A - Electronic device having load element support structure striking balance between durability and heat radiation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic device which has a support structure that strikes a balance between durability and heat radiation when supporting a load element to be spaced from a circuit board by a predetermined distance. <P>SOLUTION: In an electronic device 10, a load element 20 is supported to be spaced from a circuit board 30. The device 10 comprises a support structure 40 with the compatible durability and heat radiation, wherein an angle support member supports the load element at its both sides, load support steps 44 are formed to be projected toward inward of the load element, and a plurality of ventilation openings are formed in the upright surface of at least one of the left and right load support steps projected toward inward of the load element to enable air circulation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electronic device including a support structure for a load element that achieves both durability and heat dissipation, and in particular, in a composite electronic device incorporating a DVD (Digital Versatile Disk) device or a VCR (Video Cassette Recorder) device. The present invention relates to an electronic apparatus provided with a support structure for a DVD device that achieves both durability and heat dissipation when the DVD device is supported on a DVD control circuit board at a predetermined distance. In the present invention, the “load element” is a functional element having a predetermined load, such as a DVD device in the above-mentioned composite electronic device, and an element to be supported at a predetermined distance from the circuit board. That means.

  Of course, it is obvious that the present invention can be easily applied to other than those described in the embodiments without departing from the spirit of the invention.

  Conventionally, in this type of composite electronic device, when the load element is supported at a predetermined distance from the circuit board, for example, when the DVD device is supported on the DVD control circuit board, both of the DVD control circuit boards are supported. In general, an L-shaped angle member is provided on the side, the DVD device is separated from the DVD control circuit board by an appropriate distance, and is supported by being fixed to the left and right L-shaped angle members with a plurality of screws.

However, in such a load element support method, since the DVD device is only screwed to the L-shaped angle member, the DVD device should be securely supported when an electronic device is accidentally dropped. In the worst case, the DVD device may be broken or broken, and the DVD device may be broken from the support of the L-shaped angle member.
Further, in such a load element supporting method, a substantially rectangular closed space is created by the L-shaped angle members on both sides, the upper DVD device, and the lower DVD control circuit board. Circulation did not occur, heat was trapped therein, and even if a cooling fan or the like was provided, it was difficult to sufficiently circulate the cooling air.

  In the conventional load element support method as described above, it is possible to circulate sufficient air to the control circuit board on the lower surface to achieve both heat dissipation while ensuring the support of the load element and improving the durability of the equipment. It was difficult.

  The present invention provides an electronic device including a support structure that achieves both durability and heat dissipation when supporting a load element at a predetermined distance from a circuit board in the electronic device. In particular, a composite electronic device incorporating a DVD device or a VCR device has a support structure that achieves both durability and heat dissipation when the DVD device is supported on a DVD control circuit board at a predetermined distance. Electronic equipment is provided.

  The present invention provides an electronic device that supports a load element at a predetermined distance from a circuit board, and includes an angle support member that supports the load element from both sides, and the angle support member protrudes inward of the load element. A plurality of load supporting steps, and in addition, a plurality of air circulations in an upright surface of at least one of the left and right load supporting steps projecting inward of the load element. The present invention provides an electronic device provided with a support structure having both durability and heat dissipation provided with a ventilation opening.

  Furthermore, the present invention provides a support structure that achieves both durability and heat dissipation by forming a plurality of ventilation openings that enable air circulation in an upright surface of a load support step located at an outer portion of an electronic device. The electronic device provided with this is provided.

  Furthermore, in addition to the angle support member, the present invention includes a support structure that achieves both durability and heat dissipation by combining the support reinforcement member with the angle support member in order to achieve a strong support structure. Electronic equipment.

  Furthermore, the present invention provides an electronic device provided with a support structure in which the angle support member and the support reinforcing member are combined with each other by screwing or spot welding so as to achieve both durability and heat dissipation. It is.

  Further, according to the present invention, the plurality of ventilation openings formed in the angle support member preferably have a ratio (opening ratio) between an additional opening length of the ventilation opening and a depth dimension of the member between 5% and 15%, particularly preferably. It is an object of the present invention to provide an electronic device provided with a support structure that achieves both durability and heat dissipation of 10%.

  The present invention provides an electronic device for supporting a load element at a predetermined distance from a circuit board, by an angle support member formed with a load support step portion protruding from both sides toward the inside of the load element. By providing a plurality of ventilation openings for supporting and circulating air in the upright surface of at least one of the load supporting steps, the load element can be reliably supported and the air can be circulated. Therefore, it is possible to provide an electronic device provided with a support structure that achieves both durability and heat dissipation.

  Furthermore, the present invention can achieve a stronger support structure by stacking and combining support reinforcing members on the angle support member, thereby achieving both durability and heat dissipation. It is possible to provide an electronic apparatus provided with the support structure.

  Further, according to the present invention, the plurality of ventilation openings formed in the angle support member preferably have a ratio (opening ratio) between an additional opening length of the ventilation opening and a depth dimension of the member between 5% and 15%, particularly preferably. By setting the ratio to 10%, the air used for cooling the circuit board can be kept circulated without reducing the strength of the angle support member, and an electronic device having a support structure that achieves both durability and heat dissipation. Equipment can be provided.

  Hereinafter, an embodiment as the best mode for carrying out the present invention will be described with reference to the drawings. In this embodiment, the electronic device is a composite electronic device in which a DVD device and a VCR device are incorporated, and in particular, a support structure when the DVD device is supported on a DVD control circuit board at a predetermined distance. An electronic device having a body will be described as a target.

  FIG. 1 is a front view in which a part of a composite electronic device 10 incorporating a DVD device 20 and a VCR device (although not shown) arranged side by side with the DVD device 20 in the embodiment of the present invention is broken. FIG. The front of the composite electronic device 10 is provided with a video cassette medium insertion port for the VCR device, various switches, input / output terminals, device operating status and time display devices, and the like, which are not relevant to the present invention. Not shown.

  The DVD device 20 of the composite electronic device 10 has a predetermined load and corresponds to the load element of the present invention. The DVD device 20 that is the load element is separated from the DVD control circuit board 30 by a predetermined distance h. Then, it is supported by support structures 40, 40 from both sides.

  FIG. 2 is a top view in which a part of the composite electronic device 10 according to the embodiment of the present invention is broken, as in FIG. The composite electronic device 10 has an outer surface formed by a top plate 70 that covers other than the front and back surfaces of the device, and the top plate 70 has a DVD control circuit board 30 of the DVD device 20 as shown in detail in FIG. An outside air suction port 71 (not shown in FIG. 2) for taking in air to be cooled from the outside is formed. A fan 60 for achieving air circulation in the composite electronic device 10 is provided on the back panel behind the DVD device 20 of the composite electronic device 10. By driving the fan 60, the outside air is sucked from the outside air suction port 71 of the top plate 70, and the inside from the ventilation openings 41, 41... 41 (detailed explanation in FIG. 3) of the support structure 40. It circulates and cools the DVD control circuit board 30 and is discharged from the fan 60 to the outside air. The air flow at this time is indicated by a streamline S.

  In FIG. 2, a plurality of ventilation openings 41, 41... 41 that enable air circulation are provided in an upright plane 45 of a load support step 44 located on the outer side (right side in FIG. 2) of the electronic device 10. Although the flow line S is illustrated as the air flow (as will be described in detail later), ventilation openings 41, 41... 41 are formed and supported on both sides in order to share the left and right parts. It is also possible to use the structure 40 as a common part. At that time, a slight inflow of air also occurs from the left support structure 40 in FIG.

  3 shows an air circulation flow in which the outside air sucked from the outside air suction port 71 of the top plate 70 of the composite electronic device 10 according to the embodiment of the present invention is circulated so as to cool the DVD control circuit board 30 by the fan 60. It is a side view of the relationship of arrangement. As a result, the outside air is sucked from the outside air suction port 71 of the top plate 70 and flows downward a little while cooling the side surface of the DVD device 20, and is supported from the ventilation openings 41, 41... 41 of the support structure 40. It flows into the body 40, cools the DVD control circuit board 30, and is drawn by the fan 60 from behind to dissipate heat to the outside air. FIG. 4 shows a perspective view of the top plate 70 of the composite electronic device 10 and shows the formation of the outside air suction port 71 more clearly. As shown in the drawing, the outside air suction port 71 is preferably formed by arranging a large number of slit-shaped openings in multiple stages. In addition, it is not arranged uniformly in the depth direction of the device, but rather than being arranged in front and formed on the back surface portion, the outside fan 60 is circulated through the device by sucking outside air from the front. A longer air circulation path can be achieved in the equipment.

  FIG. 5 illustrates a state in which the DVD device 20 of the composite electronic device 10 according to the embodiment of the present invention is supported by the support structures 40 and 40 from both sides, separated from the DVD control circuit board 30 by a predetermined distance h, from the back side. Accordingly, the side wall of the top plate 70 can be seen on the left side of FIG. The support structure 40 is configured by overlapping and combining an angle support member 42 and a support reinforcing member 43. In the figure, the support reinforcing member 43 is hatched with a thick line so that these members can be easily identified. The drawing of this embodiment shows an example in which the left and right support structures 40 are made into common parts. Of course, there are many cases where the left and right support structures 40 cannot always be made into a common component due to the position of the mounting hole for mounting the substrate, etc. However, in order to cope with this, it is only necessary to make a design change.

  In this case, the flow of air sucked from the outside air suction port 71 of the top plate 70 is as shown in the drawing.

  FIG. 6 is a side view of the support structure 40 configured by aligning and supporting the angle support member 42 and the support reinforcing member 43 in an overlapping manner. Thus, by configuring the support structure 40 by combining the angle support member 42 and the support reinforcing member 43, the support structure 40 having extremely high strength can be obtained. In the illustrated support structure 40, the support reinforcing member 43 first takes in air sucked from the outside air suction port 71 of the top plate 70, but the ventilation opening provided in the support reinforcing member 43 at that time There are seven parts 41, 41... 41, and the diameter is d. FIG. 7 is a top view of the support structure 40 configured by aligning and supporting the angle support member 42 and the support reinforcing member 43 in an overlapping manner.

  8 is a side view of the angle support member 42, FIG. 9 is a top view of the angle support member 42, and FIG. 10 is a rear view of the angle support member 42.

  In the embodiment shown in FIG. 8, a plurality (five in the figure) of ventilation openings 41, 41... 41 are formed in the upright surface 45 of the load support step 44 to enable air circulation with a diameter d. ing. If this diameter dimension is increased and the number of ventilation openings 41 is increased, the air flow increases and the heat dissipation effect of the DVD control circuit board 30 increases. However, if the diameter dimension of the ventilation openings 41 is increased and the number thereof is increased in this way, the angle support member 42 is weakened accordingly, and sufficient resistance may not be obtained.

  The bent load support step 44 of the angle support member 42 mounts a DVD device as a load element thereon, and further has five ventilation openings 41 in an upright surface 45 bent in the vertical direction. 41 ... 41 are formed (see FIGS. 8 and 10). In FIG. 8, 46 is a screw-fastening hole, and the position coincides with the screw-fastening hole 46 of the support reinforcing member 43. In FIG. 8, reference numeral 47 denotes an alignment convex portion, which coincides with the alignment hole 48 of the support reinforcing member 43. As a result, the angle support member 42 and the support reinforcing member 43 can be aligned and combined. Of course, a rivet or spot welding method may be used for the combination. In the figure, the three shaded lines in the circle are shown so that the convex portions can be easily understood visually.

  In FIG. 8, the ventilation opening 41 is not provided so much in the front part (the left side in FIG. 8, the front side of the electronic device) in the upright surface 45 of the load support step 44 in the case of a DVD device. Since relatively heavy parts such as a drive motor are arranged on the front side of the device, the opening is avoided from the viewpoint of maintaining strength. This can also be changed according to design requirements.

  In FIG. 9 and FIG. 10, 49 is a hole for attaching a substrate, and 50 is a hole for attaching the entire DVD device to the chassis.

  Here, although it is a problem of the diameter and number of the ventilation opening 41, the inventors repeat experiment and form five ventilation openings 41 with a diameter of 4 mm with respect to the angle support member 42 with a depth dimension of 190 mm. However, it was concluded that the durability of the support structure and the heat dissipation of the DVD control circuit board 30 can both be achieved.

  Further, when the depth dimension is L, the diameter of the ventilation opening 41 is d, and the number thereof is n, the ratio between the added opening length (d × n) of the ventilation opening and the depth dimension (L) of the member ( The aperture ratio is preferably between 5% and 15%, particularly preferably 10%.

  In the present embodiment, the ventilation opening 41 is formed as a circular opening, but needless to say, it is not necessarily limited to a circle. For example, any shape such as an elliptical opening, a rhombus opening, a polygonal opening, a slit opening, etc. may be used depending on the design. However, in any case, the opening ratio is preferably between 5% and 15%, particularly preferably 10%.

  11 is a side view of the support reinforcing member 43, FIG. 12 is a top view of the support reinforcing member 43, FIG. 13 is a rear view of the support reinforcing member 43, and FIG. 11) It is sectional drawing.

  In FIG. 11, reference numeral 46 denotes a screw-fixing hole, which is aligned with the screw-fixing hole 46 of the angle support member 42. In FIG. 8, reference numeral 48 denotes an alignment hole, which coincides with the alignment convex portion 47 of the angle support member 42.

  In the embodiment of FIG. 11, seven ventilation openings 41 having a diameter d are formed in the support reinforcing member 43.

  In the embodiment of the present invention, the support reinforcing member 43 has seven ventilation openings 41 having a diameter d, and the angle support member 42 has five ventilation openings 41 having a diameter d. The reason is that it is desired to introduce as much outside air as possible to the DVD control circuit board 30. Therefore, the number of ventilation openings 41 is larger than the angle support member 42 (inside, the side farther from the outside air suction port 71 of the top plate 70) than the support reinforcing member 43 (outside, the side closer to the outside air suction port 71 of the top plate 70). This is what more people have formed.

  Furthermore, the formation position of the first head of those ventilation openings 41 (the front side of the device, the left side in FIG. 6) is higher than that of the first ventilation opening 41 of the angle support member 42. The foremost vent opening 41 is formed from the forefront side of the device, that is, from the left side of FIG. This is also because it is desired to introduce as much outside air as possible to the DVD control circuit board 30.

The partially broken front view of the composite electronic device of the Example of this invention The partially broken top view of the composite electronic device of the embodiment of the present invention Side view showing air circulation flow for cooling DVD control circuit board The perspective view which shows the top plate of the composite electronic device of the Example of this invention. Rear view showing a state in which the DVD device is supported by the support structure from both sides Side view of support structure Top view of support structure Side view of angle support member Top view of angle support member Rear view of angle support member Side view of support reinforcement member Top view of support reinforcement member Rear view of support reinforcement member AA cross-sectional view of support reinforcing member

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Composite electronic device 20 DVD apparatus 30 DVD control circuit board 40 Support structure 41 Ventilation opening part 42 Angle support member 43 Support reinforcement member 44 Load support step part 60 Fan 70 Top plate 71 Outside air suction port

Claims (5)

  In an electronic device that supports a load element at a predetermined distance from a circuit board, the load element includes an angle support member that supports the load element from both sides, and the angle support member protrudes inward of the load element. A plurality of ventilation openings that allow air circulation in the upright surface of at least one of the left and right load support steps that form a step and project inward of the load element An electronic device comprising a support structure that has both durability and heat dissipation.   The durability and heat dissipation properties of claim 1, wherein a plurality of ventilation openings that enable the air circulation are formed in an upright surface of a load support step located outside the electronic device. Electronic equipment provided with a supported support structure.   3. The durability and heat dissipation according to claim 1, wherein a support reinforcing member is combined with the angle support member in order to achieve a strong support structure in addition to the angle support member. An electronic device with a support structure that balances performance.   4. The support structure according to claim 3, wherein the angle support member and the support reinforcing member are combined in an integrated manner by screwing or spot welding or the like. Electronics. The plurality of ventilation openings formed in the angle support member have a ratio (opening ratio) between the additional opening length of the ventilation opening and the depth dimension of the member (opening ratio) of 5% to 15%, particularly preferably 10%. An electronic apparatus comprising a support structure that achieves both durability and heat dissipation according to one of the claims.