JP2007208731A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of conventional electronic equipment in which a post process such as machining and painting is required for a shell since the shell which is integrally formed from magnesium die casting is exposed on the surface of an equipment body, resulting in higher manufacturing cost for diseconomy, while sense of high grade that a metal provides is not offered even by a post process such as clear coating. <P>SOLUTION: There are provided a packaging member 31 which is formed of magnesium alloy by die casting and covers at least a part of an electronic equipment body, and a decorative member 32 that has a shape corresponding to the packaging member 31. The almost entire surface of the packaging member 31 is covered with the decorative member 32 by overlapping the decorative member 32 on the packaging member 31. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic device in which an electronic device main body formed of various electronic components, electrical components, electronic devices, and single or a combination of electrical devices is covered with an exterior member, and in particular, magnesium die casting is used for at least a part of the exterior member. It relates to electronic equipment.

  Conventional electronic devices of this type include those described in Patent Document 1, for example. Patent Document 1 describes an electronic device that is configured by housing an electronic circuit unit and various mechanism units in an outer casing. The electronic device described in Patent Document 1 has “a main chassis formed of magnesium die casting, and the main chassis constitutes at least a part of the outer shell portion of the outer casing, It holds the member housed in the "."

According to the electronic device described in Patent Document 1 having such a configuration, “it is possible to have a so-called high-class feeling as a light appearance having sufficient strength while being lightweight (paragraph [0063] Etc.) is expected.
Japanese Patent Laid-Open No. 8-236951

  However, the electronic device described in Patent Document 1 includes a main chassis integrally formed by magnesium die casting, and the main chassis is configured to appear on the surface of the device body. In general, a magnesium alloy has a high viscosity and poor fluidity in a molten state. Therefore, the surface of the molded product is rough and the appearance of the surface is not so good. In order to increase the yield of such a main chassis, a surface treatment is required. For the surface treatment, for example, machining or painting is required. Therefore, there has been a problem that the post-processing such as machining and painting increases the manufacturing cost and is uneconomical.

  In general, when a metal is used as an exterior member in a high-class electronic device, a hairline process is performed on the surface, and then a clear coat treatment is performed to give a high-class feeling, or a plastic is used as the exterior member. In some cases, a metallic coating was applied to give a metallic appearance and create a high-class feeling. However, in the case of a magnesium alloy, it is difficult to provide a high-class metallic feeling even by applying a clear coat treatment, metallic coating, or the like, and it has been difficult to provide an electronic device having a high-class feeling.

  On the other hand, from the high-quality feeling of the aluminum alloy, when the exterior member is formed of the aluminum alloy alone without using the magnesium alloy, a metallic feeling and a high-class feeling can be obtained, but the strength of the aluminum alloy itself is low, so There is a problem that it is difficult to maintain a predetermined strength.

  The problem to be solved is that when a magnesium alloy is used as an exterior member of an electronic device, post-processing such as machining or painting is necessary, which increases manufacturing costs and is uneconomical. Further, it is not possible to give a high-class feeling to the metal even by performing a post-treatment such as a clear coat treatment. On the other hand, when an aluminum alloy is used as an exterior member, it can give a high-class feeling to the metal, but because its own strength is low, it is difficult to ensure the strength required for the exterior member. That is the point.

  An electronic device of the present invention includes an exterior member that is formed by die casting using a magnesium alloy and covers at least a part of an electronic device main body, and a decorative member that has a shape corresponding to the exterior member, and the decorative member is the exterior member The most important feature is that substantially the entire surface of the exterior member is covered with the decorative member by superimposing on the surface.

  According to the electronic device of the present invention, since the exterior member formed by die casting using a magnesium alloy does not appear on the surface as the outer shell portion of the device, post-processing such as painting and surface processing on the exterior member is reduced. be able to. As a result, the yield of the exterior member can be increased and the production efficiency can be increased.

  By forming the exterior member by die-casting with a magnesium alloy and covering the exterior member with a decorative member made of a metal material, the yield of the exterior member can be improved and the production efficiency can be increased, and the metal feeling can be increased. An electronic device with a high-class feeling was realized with a simple configuration.

  1 to 17 illustrate examples of embodiments of the present invention. That is, FIG. 1 is a perspective view of a digital video camera showing a first embodiment of an electronic apparatus according to the present invention as seen from the front side, FIG. 2 is a perspective view of the same as seen from the back side, and FIG. 4 is a perspective view of the decorative member shown in FIG. 3, FIG. 5 is a perspective view of the external member shown in FIG. 3, and FIG. 6 is a decorative member. FIG. 7 is an AA cross-sectional view of FIG. 3, illustrating the arrangement of adhesive paper or the like that joins the exterior member.

  8 is a perspective view of the lens device and the heat transfer means of the digital video camera shown in FIG. 1 as seen from the back side, FIG. 9 is a longitudinal sectional view of the heat transfer means shown in FIG. 8, and FIG. 11 is an explanatory diagram viewed from the rear side of the image sensor substrate disposed behind the lens device, FIG. 12 is an explanatory diagram viewed from the front side, and FIG. 13 is an explanatory diagram showing an image sensor attached to the image sensor substrate. FIG. 14 is a first explanatory view for explaining a mounting state of the second heat transfer plate of the heat transfer means, FIG. 15 is an explanatory view showing a main part of FIG. 14, and FIG. 16 is a second transfer of the heat transfer means. FIG. 17 is an explanatory view showing a main part of FIG. 16.

  1 and 2 show a digital video camera 1 applied as a first embodiment of an imaging apparatus showing a specific example of the electronic apparatus of the present invention. This digital video camera 1 uses a tape-like storage medium (for example, a tape cassette) in which a magnetic tape is housed in a cassette case as a specific example of an information storage medium, and an optical image is captured by a CMOS image sensor or the like. The image signal is converted into an electrical signal by an image sensor and recorded on a tape-shaped storage medium or displayed on a display device including a flat panel such as a liquid crystal display. However, the information storage medium is not limited to the tape storage medium of this embodiment, and a disk storage medium such as an optical disk, a magneto-optical disk, a magnetic disk, or a semiconductor storage medium can also be used.

  The digital video camera 1 travels and drives an outer case 2 showing a specific example of the camera body, and a magnetic tape of a tape cassette as an information storage medium that is housed in the outer case 2 and is detachably mounted. A tape drive device (mechanical deck) that records (writes) and reproduces (reads) information signals, a control circuit that controls the drive of the tape drive device, and a CMOS image sensor that captures the subject image as light. The lens device 3 that leads to the imaging element 5 and the display device 4 that is rotatably attached to the exterior case 2 are configured.

  As shown in FIGS. 1 and 2, the exterior case 2 is formed of a substantially cylindrical hollow casing, and is used in a state where the axial direction is set to the front-rear direction. The display device 4 is attached to one side surface of the outer case 2 so that the posture can be changed. The display device 4 includes a panel case 11 in which a flat panel made of a flat liquid crystal display or the like is accommodated, and a panel support portion 12 that supports the panel case 11 with respect to the exterior case 2 so that the posture can be changed. Yes.

  The panel case 11 is formed of a flat casing that is a substantially rectangular parallelepiped, and the display surface of the flat panel is exposed on the surface facing the one side surface of the exterior case 2. The panel support unit 12 includes a horizontal rotation unit that allows the panel case 11 to rotate approximately 90 degrees in the horizontal direction about the vertical axis, and the panel case 11 in the front-rear direction about the horizontal axis. In addition to being able to rotate approximately 180 degrees, it further includes a front-rear rotating part that can rotate approximately 90 degrees in the vertical direction and can rotate approximately 270 degrees in total.

  As a result, the display device 4 is stored in the side surface of the exterior case 2 as shown in FIG. 1 and the like, and although not shown, the panel case 11 is rotated 90 degrees horizontally to face the flat panel backward. A state in which the panel case 11 is rotated 180 degrees from that state and the flat panel is opposed to the front, and a state in which the flat panel is opposed to the rear is further rotated 90 degrees to the rear and the flat panel It is possible to take a state in which the is directed downward and an arbitrary state (posture) between these positions.

  Further, a gripping portion 14 for gripping the exterior case 2 is provided on the side surface of the exterior case 2 opposite to the display device 4. The gripping portion 14 also serves as a cover member of a mechanical deck that is housed in the gripping portion 14 and does not appear in the drawing. By opening the upper portion of the gripping portion 14 outward, the cassette insertion slot of the built-in mechanical deck is exposed, and the tape cassette can be attached and detached.

  A power switch 15 that also serves as a mode selection switch, a shutter button 16 that captures a still image, and an image are continuously enlarged (tele) or reduced (wide) within a predetermined range behind the grip 14. A zoom button 17 is provided. The power switch 15 has a function of switching the power on / off by a turning operation and a function of switching so as to repeat a plurality of function modes by turning the power while the power is turned on. Below the power switch 15, a recording button 18 for taking a moving image is provided.

  Further, a hand belt 21 is attached to the lower portion of the gripping portion 14 so as to be bridged in the front-rear direction, and a hand pad 22 is attached to the hand belt 21. The hand belt 21 and the hand pad 22 support the user's hand holding the grip 14 of the outer case 2 and prevent the digital video camera 1 from being removed.

  As shown in FIG. 2, a battery housing portion 23 to which a battery device 24 as a portable power source is detachably attached is provided on the back surface of the outer case 2. The battery housing portion 23 is configured as a concave portion that is continuous from the center portion to the lower surface on the back surface of the exterior case 2. Above the battery storage unit 23, a viewfinder device 25 having a half-moon-shaped dome shape is disposed.

  The battery storage unit 23 includes a rectangular recess having a size substantially equal to that of the battery device 24, and four engagement claws (not shown) that are slidable in the vertical direction are provided in the recess. ing. The battery device 24 is detachably attached to the four engaging claws and is held in the battery storage portion 23.

  As shown in FIG. 1, a stereo microphone 26 is provided in the lower part of the front surface of the outer case 2. A light emitting unit 27 of the flash device is disposed on the upper part of the front surface of the lens device 3.

  An accessory shoe (not shown) on which an accessory such as a video light or an external microphone is detachably mounted is provided on the top of the outer case 2. The accessory shoe is disposed above the lens device 3 and is normally detachably covered with a shoe cap 28. Furthermore, an operation unit 29 having a plurality of operation buttons is provided on the upper side of the display device 4 housed on the side surface of the exterior case 2.

  As shown in FIG. 3, the upper portion of the exterior case 2 is composed of an exterior member 31 and a decorative member 32 that covers the surface of the exterior member 31. The exterior member 31 is formed by die casting using a magnesium alloy, that is, so-called magnesium die casting, and has a substantially semicircular cross-sectional shape as shown in FIG. A shoe opening 33 for exposing the accessory shoe is provided at one end in the longitudinal direction of the exterior member 31. The shoe opening 33 of the exterior member 31 is formed in a substantially elliptical shape, and a shoe holder 34 is attached to the shoe opening 33.

  The shoe holder 34 has a holder body 35 having a substantially oval shape corresponding to the shoe opening 33. The holder body 35 of the shoe holder 34 is formed with a cap recess 35a that is recessed so that the shoe cap 28 can be fitted, and the accessory shoe is fitted in the approximate center of the cap recess 35a. A substantially square fitting hole 35b is provided. In addition, fixing protrusions 36 a and 36 b are provided at both ends of the holder body 35 in the major axis direction. The fixing protrusions 36 a and 36 b are fixed to the outer case 31 by fixing screws 37 and 37, whereby the shoe holder 34 is attached to the outer case 31.

  Furthermore, an engagement receiving portion 31a is provided at one end in the arc direction forming the semicircular shape of the exterior member 31, and an engagement claw 43 (to be described later) of the decorative member 32 is engaged with the engagement receiving portion 31a. Is done. Further, a mounting bracket 38 is attached to the other end in the arc direction forming the semicircular shape of the exterior member 31 by fixing means such as a fixing screw.

  The mounting bracket 38 is interposed between the exterior member 31 and a member (not shown) that is positioned below the exterior member 31 and constitutes a part of the exterior case 2. An engagement receiving portion 38a is provided at an end of the mounting bracket 38 opposite to the exterior member 31, and an engagement claw 44 (to be described later) of the decorative member 32 is engaged with the engagement receiving portion 38a. Is done. Further, the mounting bracket 38 is provided with a plurality of button exposure holes 39 for exposing a plurality of operation buttons of the operation unit 29.

  As shown in FIG. 5, the decorative member 32 has substantially the same shape as the exterior member 31, and is set so that the semicircular curvature radius of the cross-sectional shape substantially matches the curvature radius of the exterior member 31. . The decorative member 32 is provided with a shoe through hole 41 at a position corresponding to the shoe opening 33 of the exterior member 31, and a button through hole at a position corresponding to the button exposing hole 39 of the mounting bracket 38. 42 is provided. Further, engagement claws 39 and 40 are provided at both ends of the decorative member 32 in the arc direction forming the semicircle, and these engagement claws 43 and 44 are attached to the engagement receiving portion 31a of the exterior member 31. The brackets 38 are respectively engaged with the engagement receiving portions 38a.

  As shown in FIG. 7, each of the engaging claws 43 and 44 is formed by bending the end of the decorative member 32 toward the inner surface, and has stepped portions 43 a and 44 a that are recessed from the semicircular surface. Have. The step portions 43a and 44a are engaged so as to cover a member (not shown) that is located below the exterior member 31 and constitutes a part of the exterior case 2. Thereby, after the exterior case 2 is assembled, it is possible to reliably prevent the decorative member 32 from being detached from the exterior member 31.

  In the present embodiment, an aluminum alloy having high thermal conductivity is applied as the material of the decorative member 32. As a result, a metallic luster can be generated in the decorative member 32 to give a high-class feeling, and heat generated inside the outer case 2 can be efficiently radiated to the outside via the outer member 31 and the decorative member 32. Can do. However, the material of the decorative member according to the present invention is not limited to the aluminum alloy, and it is possible to apply metal materials such as titanium alloy and stainless steel and other materials, and of course, efficiently dissipate heat. When this is not taken into consideration, synthetic resins such as polycarbonate (PC) and acrylonitrile / butadiene / styrene resin (ABS) can also be applied.

  The decorative member 32 and the exterior member 31 as described above are bonded together by interposing double-sided adhesive papers 46a and 46b indicating a specific example of the bonding member between the surfaces facing each other. These double-sided adhesive papers 46a and 46b are each affixed to the surface of the exterior member 31, and then the exterior member 31 is covered with the decorative member 32, thereby interposing between the facing surfaces of the exterior case 31 and the decorative member 32. Has been.

  As shown in FIGS. 6 and 7, the double-sided adhesive papers 46 a and 46 b are arranged so as to sandwich the shoe opening 33 on one side in the longitudinal direction of the exterior member 31. As a result, a non-adhesive surface 47 with an appropriate interval is formed between the shoe openings 33 and the double-sided adhesive papers 46a and 46b. The non-adhesive surface 47 is provided to prevent the engaging claws 44 of the decorative member 32 from interfering with the double-sided adhesive paper 46a and 46b when the decorative member 32 is joined to the exterior member 31. Thereby, the exterior member 31 and the decorative member 32 can be easily joined, and workability | operativity can be improved.

  On the other hand, heat insulating sheets 48 a and 48 b showing a specific example of the heat insulating member are attached to the other side in the longitudinal direction of the exterior member 31. These heat insulating sheets 48a and 48b have the same thickness as the double-sided adhesive papers 46a and 46b, and in addition to the role of suppressing heat conduction, the role of spacers that fill the gap between the exterior member 31 and the decorative member 32 Also have. In the present embodiment, polyethylene terephthalate (PET) is applied as the material of the heat insulating sheets 48a and 48b. However, the material of the heat insulating sheet according to the present invention is not limited to this. For example, polypropylene (PP), soft vinyl chloride resin, acrylonitrile / styrene resin (AS), acrylonitrile / butadiene / styrene resin. (ABS) can be applied, and other materials having a heat insulating effect can also be applied.

  As shown in FIG. 1, the position where the heat insulating sheet 48 b is attached is a position corresponding to the contact portion T where the fingertip of the hand holding the exterior case 2 comes into contact. Thereby, it is possible to make it difficult to transfer the heat generated inside the outer case 2 to the contact portion T, and it is possible to prevent the contact portion T from becoming hot. As a result, it is possible to perform shooting comfortably even when shooting for a long time.

  As shown in FIGS. 1 and 2, a lens device 3 is disposed in the front portion of the exterior case 2. As shown in FIGS. 8 and 10, the lens device 3 includes a lens barrel 51 that forms a substantially rectangular cylinder, and a plurality of objective lenses 52 (see FIG. 1) are included therein. The lens is supported so as to be fixed or movable. Further, with the surface of the lens barrel 51 where the objective lens 52 is exposed as the front, the left frame member 54, the right frame member 55, and the upper frame member 56 are fixed to the left and right side surfaces and the upper surface by fixing means such as fixing screws, respectively. Has been.

  As shown in FIG. 14, the left frame member 54 includes a left frame body 54a made of a thin plate extending parallel to the left side surface of the lens barrel 51, and an engaging portion 54b continuous with the left frame body 54a. Etc. The left frame body 54 a of the left frame member 51 is set to a size that covers substantially the entire left side surface of the lens barrel 51, and the engaging portion 54 b is provided so as to protrude rearward of the lens barrel 51. Yes. The left engaging protrusion 88 of the heat transfer plate mounting plate 81 is engaged with the engaging portion 54b.

  As shown in FIG. 10, the right frame member 55 includes a right frame body 55a made of a thin plate extending in parallel with the right side surface of the lens barrel 51, and an engaging portion 55b continuous to the right frame body 55a. Etc. The right frame body 55 a of the right frame member 55 is set to a size that covers substantially the entire right side surface of the lens barrel 51, and the engaging portion 55 b is provided so as to protrude rearward of the lens barrel 51. Yes. A right engagement protrusion 89 (to be described later) of the heat transfer plate mounting plate 81 is engaged with the engagement portion 55b.

  The upper frame member 56 includes an upper frame main body 56a made of a thin plate having a substantially L-shaped planar shape, a fixing portion 56b that extends substantially perpendicularly to one end of the upper frame main body 56a, and the like. Yes. The upper frame body 56 a of the upper frame member 56 is disposed so as to cover the rear portion of the upper surface of the lens barrel 51, and the fixing portion 56 b is parallel to the rear surface of the lens barrel 51. A mounting portion 83 of a heat transfer plate mounting plate 81 to be described later is fixed to the fixing portion 56b by fixing means such as a fixing screw.

  On the rear surface of the lens barrel 51, there are an image sensor substrate 58 to which the image sensor 5 (not shown in FIG. 10) is attached, a heat transfer means 59 for transmitting heat generated in the image sensor 5 to the exterior member 31, and the like. Has been placed. The heat transfer means 59 has a configuration as shown in FIGS. 9 to 13. The heat transfer means 59 is configured to transfer the heat transferred to the first heat transfer plate 61 in contact with the imaging element 5, the second heat transfer plate 62 in contact with the exterior member 31, and the first heat transfer plate 61. A heat transfer member 63 that transmits to the second heat transfer plate 62 is provided.

  As shown in FIGS. 11 and 12, the image pickup device substrate 58 is formed of a vertically long plate body having a substantially rectangular shape, and the image pickup device 5 is disposed above the surface (the surface shown in FIG. 12) facing the lens barrel 51. Is mounted by soldering. The image sensor substrate 58 is attached to the lens barrel 51 of the lens device 3 via a first heat transfer plate 61 joined to the image sensor 5.

  As shown in FIG. 13, the image pickup device 5 includes an element main body 65 having a flat rectangular parallelepiped shape, and a pair of terminal portions that protrude substantially perpendicularly to two sides facing the vertical direction of the element main body 65. 66, 66, etc. Each of the pair of terminal portions 66 and 66 is provided with a plurality of terminal pins 66 a, and these terminal pins 66 a are soldered to the imaging element substrate 58. And the 1st heat exchanger plate 61 is joined to the surface by which the pair of terminal parts 66 and 66 of the element main-body part 65 protrude by the adhering means, such as an adhesive agent.

  The first heat transfer plate 61 is formed of a horizontally long plate body having a substantially rectangular shape, and the material thereof is a material having high thermal conductivity such as an aluminum alloy. Attachment holes 61 a and 61 b for attachment to the lens barrel 51 are provided at one corner of the first heat transfer plate 61 facing in the diagonal direction. In addition, positioning holes 61c and 61d are provided at the corners facing the other diagonal direction, and these positioning holes 61c and 61d are provided on the back surface of the lens barrel 51 as shown in FIG. The positioning protrusions 51a and 51b are fitted.

  As shown in FIG. 11, an opening window 67 penetrating the front and back surfaces is provided at a position corresponding to the image sensor 5 of the image sensor substrate 58. The opening window 67 of the image pickup device substrate 58 is formed of a square hole having a substantially rectangular shape, and a part of the first heat transfer plate 61 is exposed by the opening window 67. Further, through holes 68 and 69 and a notch 70 are provided at positions corresponding to the mounting holes 61 a and 61 b and the positioning holes 61 c and 61 d of the first heat transfer plate 61 of the image pickup device substrate 58. The through holes 68 and 69 and the notch 70 are escapes through which the positioning protrusions 51 a and 51 b of the lens barrel 51 and the fixing screws 94 and 94 are inserted when the first heat transfer plate 61 is attached to the lens barrel 51. It is considered to be a part.

  As shown in FIG. 10, the second heat transfer plate 62 is formed by bending a plate material having a high thermal conductivity such as an aluminum alloy, and includes a base portion 71 facing the image sensor substrate 58, a lens mirror, and the like. An upper surface portion 72 opposed to the upper surface of the cylinder 51, a right side surface portion 73 opposed to the right side surface, a contact portion 74 that protrudes on the opposite side to the imaging element substrate 58 and contacts the exterior member 31 (see FIG. 9), etc. It is made up of.

  Positioning holes 71 a and 71 b are provided at one corner of the base portion 71 of the second heat transfer plate 62 facing in the diagonal direction. Two positioning projections of the heat transfer plate mounting plate 81 are fitted in the positioning holes 71a and 71b, respectively. Further, the contact portion 74 of the second heat transfer plate 62 is extended in a horizontal direction continuously to one side of the base portion 71, and extends substantially vertically continuously to the extended piece 76. The contact piece 78 includes a rising piece 77 and a contact piece 78 that is continuous with the rising piece 77 in the same direction as the development piece 76, and the upper surface of the contact piece 78 is in contact with the exterior member 31.

  The second heat transfer plate 62 is fixed to the heat transfer plate attachment plate 81 by an adhering means such as an adhesive, and is attached to the upper frame member 56 via the heat transfer plate attachment plate 81. The heat transfer plate mounting plate 81 includes a plate main body 82 to which the second heat transfer plate 62 is fixed, an attachment portion 83 that is continuous with the plate main body 82, and is attached to the fixing portion 56b of the upper frame member 56. ing.

  The plate body 82 of the heat transfer plate mounting plate 81 is formed of a substantially rectangular plate body, and is provided with a rectangular hole 85 that forms a horizontally long rectangle at the top. The contact portion 74 of the second heat transfer plate 62 is inserted into the square hole 85. Further, although not shown, two positioning projections are provided on the surface of the plate body 82 that is joined to the second heat transfer plate 62. Positioning holes 69 a and 69 b of the second heat transfer plate 62 are fitted into these two positioning projections, and thereby the second heat transfer plate 62 is positioned with respect to the heat transfer plate mounting plate 81. In addition, a reinforcing piece 86 having a substantially lattice shape and a gripping piece 87 for gripping the heat transfer plate mounting plate 81 are provided on the surface of the plate body 82 opposite to the surface to be joined to the second heat transfer plate 62. Is provided.

  As shown in FIG. 14 and FIG. 15, a left engagement protrusion 88 is provided at the lower part of the left side as viewed from the front side with the surface joined to the second heat transfer plate 62 of the plate body 82 as the front. ing. The left engagement protrusion 88 is engaged with the engagement portion 54 b of the left frame member 54 when the heat transfer plate attachment plate 81 is attached to the upper frame member 56. Further, as shown in FIGS. 16 and 17, a right engagement protrusion 89 is provided at the lower part of the right side surface of the plate body 82. The right engagement protrusion 89 is engaged with the engagement portion 55 b of the right frame member 55 when the heat transfer plate attachment plate 81 is attached to the upper frame member 56.

  The mounting portion 83 of the heat transfer plate mounting plate 81 is expanded so as to be inclined to the front side continuously to the upper side of the plate body 82 and to be parallel to the plate body 82 continuously to the inclined piece 91. The fixed piece 92 is made up of. The heat transfer plate mounting plate 81 is attached to the upper frame member 56 by bringing the fixing pieces 92 into contact with the fixing portions 56b of the upper frame member 56 and fixing them by fixing means such as fixing screws.

  Such a heat transfer plate mounting plate 81 is preferably made of a material having low thermal conductivity so that the heat transferred to the second heat transfer plate is efficiently transferred to the exterior member 31, for example, polycarbonate (PC), A synthetic resin such as acrylonitrile / butadiene / styrene resin (ABS) is preferred. However, the material of the heat transfer plate mounting plate 81 is not limited to synthetic resin, and other materials having low thermal conductivity can be used.

  As shown in FIGS. 9 and 10, the heat transfer member 63 is interposed between the first heat transfer plate 61 and the second heat transfer plate 62 through the opening window 67 of the image sensor substrate 58. ing. The heat transfer member 63 has a flat rectangular parallelepiped shape, and one flat surface is in contact with the first heat transfer plate 61 and the other flat surface on the opposite side is in contact with the second heat transfer plate 62. . The heat transfer member 63 is formed by, for example, forming a resin containing silicon-based resin, ceramic particles, or the like, and has a high thermal conductivity and insulation by containing a heat conductive filler or the like. .

  Furthermore, the heat transfer member 63 has elasticity, and when the heat transfer means 59 is assembled, it is compressed by the first heat transfer plate 61 and the second heat transfer plate 62 and is slightly crushed. ing. As a result, the heat transfer member 63 can be brought into close contact with the first heat transfer plate 61 and the second heat transfer plate 62 and the contact area can be increased, and heat can be transferred efficiently.

  The heat transfer means 59 having the above-described configuration can be easily assembled as follows, for example. First, as shown in FIG. 13, the first heat transfer plate 61 is fixed to the surface of the image sensor 5 on the side from which the pair of terminal portions 66, 66 protrudes by an adhering means such as adhesive. Then, the imaging element 5 to which the first heat transfer plate 61 is fixed is soldered and mounted on the imaging element substrate 58. Thus, a substrate assembly 101 as shown in FIGS. 11 and 12 is configured.

  Next, as shown in FIG. 10, the substrate assembly 101 is attached to the back surface of the lens barrel 51 of the lens device 3. At this time, first, the positioning holes 61 c and 61 d provided in the first heat transfer plate 61 of the substrate assembly 101 are fitted into the positioning protrusions 51 a and 51 b of the lens barrel 51. Thereby, the substrate assembly 101 can be positioned with respect to the lens barrel 51. Thereafter, the first heat transfer plate 61 is fixed to the lens barrel 51 with fixing screws 94 and 94.

  Next, the second heat transfer plate 62 is fixed to the heat transfer plate mounting plate 81 by an adhering means such as an adhesive. Thus, a heat transfer plate assembly in which the second heat transfer plate 62 and the heat transfer plate mounting plate 81 are integrated is configured. The assembly work of the heat transfer plate assembly may be performed before the substrate assembly 101 is attached to the lens device 3 or before the substrate assembly 101 is assembled.

  Next, the electrothermal member 58 is inserted into the opening window 67 provided on the imaging element substrate 58 of the substrate assembly 101, and the heat transfer plate assembly assembled as described above is attached to the lens device 3. At this time, first, the left and right engagement protrusions 84 and 85 provided on the heat transfer plate mounting plate 81 of the heat transfer plate assembly are respectively connected to the engagement portions 54 b provided on the left and right frame members 50 and 51 of the lens device 3. , 51b. Then, the mounting portion 83 of the heat transfer plate mounting plate 81 is fixed to a fixing portion 56b provided on the upper frame member 56 of the lens device 3 by fixing means such as a fixing screw. Thereby, the assembly work of the heat transfer means 59 is completed.

  As shown in FIG. 9, when the assembly work of the heat transfer means 59 is completed, the heat transfer member 63 is interposed between the first heat transfer plate 61 and the second heat transfer plate 62, and both heat transfer plates It will be in the state compressed moderately by 61,62. Accordingly, the heat transfer member 63 can be securely adhered to both the heat transfer plates 61 and 62 and the contact area can be expanded, and the heat transferred to the first heat transfer plate 61 can be transferred to the second heat transfer plate 62. Can be transmitted reliably.

  Further, the imaging second heat transfer plate 62 is not fixed to the opposing image element substrate 58 but is attached to the lens device 3 via the heat transfer plate attachment plate 81, so that For example, it is possible not to apply stress such as tightening torque of the fixing screw. As a result, there is no fear that the image pickup device 5 soldered to the image pickup device substrate 58 is peeled off or the position is shifted, and a high photographing performance can be realized.

  According to the heat transfer means 59 having such a configuration, for example, heat generated in the image sensor 5 can be transmitted to the exterior case 31 as follows. When shooting is started using the digital video camera 1, the image sensor 5 is driven to convert the light transmitted through the lens device 3 into an electric signal, and heat is generated in the image sensor 5 at this time.

  The heat of the image sensor 5 generated in this way is transmitted from the element body 65 of the image sensor 5 to the first heat transfer plate 61. The heat transmitted to the first heat transfer plate 61 is transmitted to the second heat transfer plate 62 via the heat transfer member 63, and is transmitted from the contact portion 74 of the second heat transfer plate 62 to the exterior case 31. The Then, heat is radiated to the outside through the decorative member 32 that covers the exterior case 31. Thereby, the temperature rise of the image pick-up element 5 can be prevented, the image pick-up element 5 does not have to worry about being influenced by heat, and can fully exhibit its performance, function, and the like.

  In the present embodiment, the heat insulating sheet 48b interposed between the exterior member 31 and the decorative member 32 is disposed at a position corresponding to the contact portion T of the decorative member 32. However, the heat insulating sheet (heat insulating member) according to the present invention is not limited thereto. The position is not limited to this, and can be arranged at a desired position. For example, the position of the heat insulating sheet may be a position corresponding to the portion of the exterior member 31 with which the contact portion 74 of the second heat transfer plate 62 is contacted. In this case, it is possible to prevent the surface portion of the decorative member 32 corresponding to the portion of the exterior member 31 described above from temperature rising locally.

  As described above, according to the imaging apparatus showing a specific example of the electronic apparatus of the present invention, the exterior member that forms a part of the camera body is formed by magnesium die casting, and the surface of the exterior member is covered with the decorative member. Due to the configuration, it is possible to realize a camera body that is lightweight but has sufficient strength. In addition, since the exterior member does not appear as the surface of the camera body, post-processing such as machining or painting on the exterior member can be reduced. As a result, the yield of the exterior member can be increased and the production efficiency can be increased.

  Furthermore, by forming the decorative member with an aluminum alloy having high thermal conductivity, it is possible to give a metallic feeling to the surface of the camera body to give a high-class feeling to the image pickup device, and to dissipate the heat generated inside the camera body. Heat can be efficiently radiated to the outside through the member and the decorative member. Moreover, since a bonding member having high thermal conductivity and a heat insulating member that suppresses heat conduction are interposed between the exterior member and the decorative member, for example, the surface of the decorative member that comes into contact with the fingertip of the hand that holds the camera body Therefore, it is possible to provide a user with a comfortable shooting state.

  The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, an example in which a digital video camera showing a specific example of an imaging apparatus is applied as an electronic apparatus has been described. However, the present invention is applicable to a magnetic recording / reproducing apparatus, a disk recording / reproducing apparatus, a projector apparatus, and other various electronic apparatuses. Applicable.

It is the perspective view which looked at the display apparatus side of the digital video camera (imaging apparatus) which shows the 1st Example of the electronic device of this invention from the front side. It is the perspective view which looked at the display apparatus side of the digital video camera which shows the 1st Example of the electronic device of this invention from the back side. FIG. 2 is a perspective view of a part of the exterior case of the digital video camera shown in FIG. 1 with a decorative member attached to the exterior member. It is a perspective view of the decorative member shown in FIG. It is a perspective view of the exterior member shown in FIG. FIG. 6 is an explanatory diagram for explaining the arrangement of adhesive paper or the like for joining a decorative member, as seen from the information of the exterior member shown in FIG. 5. It is sectional drawing of the AA line part of the exterior member and decorative member shown in FIG. It is the perspective view which looked at the lens apparatus and heat-transfer means of the digital video camera shown in FIG. 1 from the back side. It is a longitudinal cross-sectional view of the heat transfer means shown in FIG. It is a disassembled perspective view of the heat-transfer means shown in FIG. It is explanatory drawing which looked at the image pick-up element board | substrate arrange | positioned at the back of the lens apparatus shown in FIG. 8 from the back side. It is explanatory drawing which looked at the image pick-up element board | substrate arrange | positioned at the back of the lens apparatus shown in FIG. 8 from the front side. It is explanatory drawing of the state which fixed the 1st heat exchanger plate to the image pick-up element attached to the image pick-up element board | substrate shown in FIG. It is the 1st explanatory view for explaining the state where the 2nd heat transfer plate of the heat transfer means shown in Drawing 8 was attached to the lens device. FIG. 15 illustrates an essential part of FIG. 14 and is an explanatory diagram illustrating an engagement state between a heat transfer plate mounting plate and a left frame member. It is the 2nd explanatory view for explaining the state where the 2nd heat transfer plate of the heat transfer means shown in Drawing 8 was attached to the lens device. FIG. 17 shows an essential part of FIG. 16 and is an explanatory diagram showing an engagement state between the heat transfer plate mounting plate and the right frame member.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Digital video camera (electronic device), 2 ... Exterior case, 3 ... Lens apparatus, 4 ... Display apparatus, 5 ... Imaging device, 31 ... Exterior member, 32 ... Cosmetic member, 33 ... Shoe opening, 41 ... Shoe Through hole for 42, 42 through hole for button, 43, 44 ... Through hole for button, 46a, 46b ... Double-sided adhesive paper (joining member), 47 ... Non-adhesive surface, 48a, 48b ... Insulating sheet (insulating member), 51 DESCRIPTION OF SYMBOLS ... Lens barrel, 58 ... Imaging device board | substrate, 59 ... Heat-transfer means, 61 ... 1st heat-transfer plate, 62 ... 2nd heat-transfer plate, 63 ... Heat transfer member, 67 ... Opening window, 74 ... Contact part 81 ... Heat transfer plate mounting plate, 101 ... Board assembly, T ... Contact part

Claims (9)

An exterior member formed by die casting using a magnesium alloy and covering at least a part of the electronic device main body;
A decorative member having a shape corresponding to the exterior member,
An electronic apparatus, wherein the decorative member is overlaid on the exterior member to cover substantially the entire surface of the exterior member with the decorative member.   The electronic device according to claim 1, wherein the decorative member is formed of a metal material having high thermal conductivity. The electronic device is an imaging device that can convert light from a subject into an electrical signal and take it out as information,
The electronic device according to claim 1, wherein the exterior member is a member that covers a lens device of the imaging device.   The exterior member and the decorative member are bowl-shaped members having a substantially semicircular cross-sectional shape, and the curvature radii of both members are substantially matched so that the decorative member is fitted to the outside of the exterior member. The electronic device according to claim 1.   The electronic device according to claim 1, wherein engagement claws for engaging with the exterior member are provided at both ends of the decorative member in the arc direction forming the semicircle.   Between the facing surfaces of the exterior member and the decorative member, there are provided a joining member having high thermal conductivity for joining both members and transferring heat, and a heat insulating member for suppressing heat conduction between the two members. The electronic device according to claim 1. The imaging device has an imaging element that converts light transmitted through the lens device into an electrical signal;
The first heat transfer plate that is bonded to the image sensor, the second heat transfer plate that is in contact with the exterior member, and the image sensor substrate on which the image sensor is mounted, and the first heat transfer plate. 4. The electronic apparatus according to claim 3, further comprising a heat transfer member that transfers heat transferred to the plate to the second heat transfer plate.   8. The electronic apparatus according to claim 7, wherein the heat transfer member is interposed in a compressed state between the first heat transfer plate and the second heat transfer plate.   The image pickup device substrate is attached to the lens device via a first heat transfer plate joined to the image pickup device, and the second heat transfer plate is attached to the lens device via an attachment member. The electronic device according to claim 7.

Images