JP2015106736A - Intercom device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intercom device capable of restricting temperature in a body case from rising.SOLUTION: A heat dissipation member 31 to have contact with a main substrate 22, a sub-substrate 23, and a front case 2 is attached to the inside of a body case 4. Attachment leg parts 32, 32 formed in belt shapes are arranged in the heat dissipation member 31, and notches 37, 37, ... where connection parts 33a, 33a, ... can be arranged are arranged in a water-proof rib 12. The connection parts 33a, 33a, ... are arranged inside the notches 37, 37, ... and also the attachment leg parts 32, 32 are fitted between a front side outer peripheral wall 11 and the water-proof rib 12. Then, the heat dissipation member 31 is attached to the inside of the body case 4.

Description

  The present invention relates to an interphone device such as an interphone handset that is installed at a front door and is used by a visitor to call a resident.

  Conventionally, as an example of an interphone device, there is an intercom slave as described in Patent Document 1, for example. The intercom handset has a synthetic resin main body case in which a front case and a rear case are assembled, and a CPU for controlling a calling operation for calling the interphone main unit in the main body case, Various electronic boards such as a main board on which a CPU for controlling the operation of the camera is mounted are accommodated.

JP 2009-152794 A

  In recent years, intercom equipment having a function of continuously operating a camera for a long time has been devised. In such an intercom device, for example, there is a problem that the temperature in the CPU itself or the main body case tends to increase due to heat generated from a CPU or the like that controls the operation of the camera.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide an intercom device that can suppress a temperature rise in the main body case.

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention includes various types of main body cases in which the front of the rear case is covered with a front case formed in a box shape that opens rearward. A waterproof rib extending along the outer peripheral wall protrudes rearward at a position on the rear surface side of the front case and on the inner side by a predetermined distance from the outer peripheral wall of the front case. On the other hand, the intercom device is provided with a waterproof recess into which a front end portion of the waterproof rib can be fitted on the front side of the rear case, and the contact portion that contacts at least a part of the substrate in the main body case And a metal heat dissipating member having an attachment portion that can be fitted between the outer peripheral wall and the waterproof rib, and a connecting portion that connects the contact portion and the attachment portion. In the rib or the waterproof recess, the Characterized in that a placement part for disposing the imaging unit.
According to this configuration, the main body case includes an abutting portion that abuts at least a part of the substrate, an attaching portion that can be fitted between the outer peripheral wall and the waterproof rib, and the abutting portion and the attaching portion. Since it has a metal heat dissipating member having a connecting portion to be connected, the heat generated in the substrate can be efficiently dissipated outside the main body case, and the local temperature rise of the substrate is suppressed, and as a result Temperature rise in the internal space can be suppressed. Moreover, since the heat radiating member is positioned on the outer side of the main body case with respect to the waterproof rib, the heat dissipation effect is higher than that when the heat radiating member is positioned inside the waterproof rib. Furthermore, it is possible to attach the heat radiating member very easily because the radiating member can be attached simply by fitting the mounting portion between the outer peripheral wall and the water proof rib while arranging the connecting portion in the waterproof rib or the waterproof concave portion. Can do. In addition, it is not necessary to separately provide a mounting portion or the like for mounting the heat radiating member in the main body case, so that it can be easily retrofitted to a ready-made product, and the space in the main body case can be used effectively.

According to a second aspect of the present invention, in the first aspect of the present invention, a heat dissipation sheet containing a heat conductive resin is attached to the outer surface of the mounting portion, and the mounting portion is connected to the outer peripheral wall and the waterproof. When fitted between the ribs, the heat dissipation sheet is in contact with the inner surface of the outer peripheral wall.
According to this configuration, when the heat radiating sheet containing the heat conductive resin is attached to the outer surface of the mounting portion, and when the mounting portion is fitted between the outer peripheral wall and the waterproof rib, the heat radiating sheet is attached to the outer peripheral wall. Since it is in contact with the inner surface, the heat in the main body case can be radiated to the outside of the main body case more efficiently.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a heat radiator including a heat conductive resin is attached to the substrate, and the heat radiator contacts the inner surface of the main body case. A contact portion is provided.
According to this configuration, the radiator including the heat conductive resin is attached to the substrate, and the contact portion with which the radiator is in contact is provided on the inner surface of the main body case. Can be suppressed.

  According to the present invention, the main body case includes an abutting portion that abuts at least a part of the substrate, an attaching portion that can be fitted between the outer peripheral wall and the waterproof rib, and the abutting portion and the attaching portion. Since it has a metal heat dissipating member having a connecting portion to be connected, the heat generated in the substrate can be efficiently dissipated outside the main body case, and the local temperature rise of the substrate is suppressed, and as a result Temperature rise in the internal space can be suppressed. Moreover, since the heat radiating member is positioned on the outer side of the main body case with respect to the waterproof rib, the heat dissipation effect is higher than that when the heat radiating member is positioned inside the waterproof rib. Furthermore, it is possible to attach the heat radiating member very easily because the radiating member can be attached simply by fitting the mounting portion between the outer peripheral wall and the water proof rib while arranging the connecting portion in the waterproof rib or the waterproof concave portion. Can do. In addition, it is not necessary to separately provide a mounting portion or the like for mounting the heat radiating member in the main body case, so that it can be easily retrofitted to a ready-made product, and the space in the main body case can be used effectively.

It is explanatory drawing which showed the intercom cordless handset from the front side. It is perspective explanatory drawing which showed the intercom subunit | mobile_unit in the decomposition | disassembly state from the front. It is perspective explanatory drawing which showed the intercom subunit | mobile_unit in the decomposition | disassembly state from the back. It is explanatory drawing which showed the front case from back. It is a perspective explanatory view of a heat radiating member. (A) is an explanatory view showing the heat dissipation member from above, (b) is an explanatory view showing the heat dissipation member from the rear, and (c) is an explanatory view showing the heat dissipation member from the left side. It is explanatory drawing which showed the state which installed the camera board | substrate and the sub board | substrate in the front case. It is explanatory drawing which showed the state which attached the heat radiating member to the front case. It is explanatory drawing which showed the state which installed the sub board | substrate in the front case. It is explanatory drawing which showed the partial cross section in the contact part of the main board | substrate of a intercom handset, and a heat radiating member.

  Hereinafter, an intercom device according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory diagram showing an interphone slave device 1 as an example of an interphone device from the front side. FIG. 2 is an explanatory perspective view showing the interphone slave device 1 in a disassembled state from the front. FIG. 3 is a perspective explanatory view showing the intercom slave 1 in the disassembled state from the rear. FIG. 4 is an explanatory view showing the front case 2 from the rear.
The intercom handset 1 has a main body case 4 composed of a front case 2 disposed on the front side and a rear case 3 disposed on the rear side. For example, a microphone unit 5 and a camera unit 6 for photographing a visitor are provided. In addition, a speaker unit 7 for calling is provided at a substantially central portion of the front surface of the main body case 4, and a push button 8 that can be pushed in is provided below the speaker unit 7.

  The front case 2 is formed in a box shape that opens rearward, and an outer peripheral portion thereof is a front outer peripheral wall 11 that extends rearward. Further, a waterproof rib 12 is provided on the rear surface of the front case 2 so as to protrude rearward at a position on the inner side of the front case 2 by a predetermined distance from the front outer peripheral wall 11. The waterproof rib 12 is for preventing water droplets from entering the main body case 4, and is provided along the left and right side surfaces and the upper surface of the front outer peripheral wall 11. On the other hand, the rear case 3 opens forward and is formed in a box shape that is slightly smaller than the front case 2, and the outer peripheral portion thereof is a rear outer peripheral wall 13 that extends forward. Further, at the front end portion of the rear outer peripheral wall 13, the front end portion (rear end portion) of the waterproof rib 12 is located at a position facing the waterproof rib 12 when assembled to the front case 2 (that is, the front side of the rear case 3). ) Is provided. Reference numeral 15 denotes an attachment base for attaching the interphone slave unit 1 to a wall surface or the like.

  Furthermore, on the front side of the internal space of the main body case 4 (the space inside the waterproof rib 12), the camera board 21 on which a camera unit (not shown) and the like are mounted, and the main operation (calling operation and A main board 22 for controlling an imaging operation or the like in the camera unit 6 is installed side by side in the vertical direction. Further, various signals are communicated to an external device (for example, an interphone master unit) on the rear side (rear side of the main board 22 etc.) inside the main body case 4 under the control of the main board 22. A sub board 23 is provided.

And the intercom handset 1 having the above-described configuration is constructed in such a manner that the waterproof ribs 12 of the front case 2 are fitted into the concave grooves 14 of the rear case 3 with various substrates 21 to 23 installed on the rear surface side of the front case 2. It is assembled by integrating the cases 2 and 3. And it installs in the wall surface etc. of an entrance via the mounting base 15. FIG.
In addition, when the intercom handset 1 assembled and installed in this manner is operated by pushing the push button 8 by a visitor, the intercom base unit (not shown) is called and the camera unit 6 is operated to photograph the visitor. And record. Thereafter, when a response operation is performed in the interphone base unit, a call can be made with the interphone base unit.

Here, the heat dissipation mechanism of the intercom handset 1 that is a main part of the present invention will be described in detail.
FIG. 5 is a perspective explanatory view of the heat dissipation member 31. 6A is an explanatory view showing the heat dissipation member 31 from above, FIG. 6B is an explanatory view showing the heat dissipation member 31 from the rear, and FIG. 6C is an explanatory view showing the heat dissipation member 31 from the left side.

  The intercom handset 1 is provided with a heat dissipation mechanism for lowering the temperature of the main board 22 and the sub board 23 and for radiating the heat generated in the main board 22 and the sub board 23 to the outside of the main body case 4. As one element of the mechanism, the heat radiating member 31 described below is provided in the main body case 4. The heat dissipating member 31 is formed by bending a thin metal plate, and includes a pair of mounting leg portions 32 and 32 and a substrate contact portion 33 provided so as to span between the mounting leg portions 32 and 32. Have. Each attachment leg 32 is a belt-like part in which the left-right direction is the thickness direction and the front-rear direction is the short direction, and the first attachment part extending in the up-down direction and the left and right inner sides of the body case 4 from the upper end of the first attachment part It is formed in the substantially L shape provided with the 2nd attaching part extended in the direction. In addition, a heat radiation sheet 34 including a heat conductive resin (for example, an acrylic resin or an olefin resin) is attached to the outer surfaces of the first attachment portion and the second attachment portion. Further, the vertical length of the first mounting portion is substantially the same as the vertical length of the left and right side portions of the waterproof rib 12, and the left and right length of the second mounting portion is approximately half of the left and right length of the upper portion of the waterproof rib 12. It has become. Then, the heat radiation member 31 can be mounted in the main body case 4 by fitting the mounting legs 32, 32 between the front outer peripheral wall 11 of the front case 2 and the waterproof rib 12.

  Further, the board contact portion 33 is a thin plate-like portion extending in the front-rear direction spanned between the lower portions of the first attachment portions of the attachment legs 32, 32, and is connected to the attachment legs 32a. 33a... And a contact portion 33b that protrudes rearward from the connecting portion and has a substantially flat surface. And the heat dissipation sheet 35 containing the heat conductive resin is affixed on the substantially front center of the contact part 33b similarly to what is affixed on the attachment leg part 32. FIG. In addition, a heat radiating body 36 containing a heat conductive resin is similarly attached to the center of the rear surface of the abutting portion 33b, although it is thicker in the front-rear direction than the heat radiating sheet 35.

On the other hand, as shown in FIG. 3, notches 37, 37... That are notched forward over a predetermined length in the vertical direction are provided on the left and right sides of the waterproof rib 12. When the rear case 3 is assembled to the front case 2, the heat radiating member 31 is disposed between the rear end of the waterproof rib 12 and the rear outer peripheral wall 13 of the rear case 3 at each notch 37. A gap in which the connecting portion 33a can be disposed is formed.
Further, as another element different from the heat radiating member 31 of the heat radiating mechanism, similarly to the heat radiating body 36, a heat radiating body 38 containing a heat conductive resin is attached to the rear surface of the sub-board 23, while the rear case. 3 is formed with a flat contact portion 39 with which the radiator 38 comes into contact when assembled to the front case 2.

  When configuring the heat dissipation mechanism, first, the camera substrate 21 and the main substrate 22 are installed on the rear surface side of the front case 2 (FIG. 7). Next, the connecting portions 33a, 33a,... Are disposed in the cutouts 37, 37,... And the mounting legs 32, 32 are fitted between the front outer peripheral wall 11 and the waterproof rib 12, thereby providing a camera. A heat radiating member 31 is attached to the rear of the substrate 21 and the main substrate 22 (FIG. 8). Then, the sub board | substrate 23 is installed behind the thermal radiation member 31 (FIG. 9). Finally, the rear case 3 may be assembled to the front case 2.

  Then, as shown in FIG. 10, the heat radiating sheet 35 attached to the front surface of the heat radiating member 31 contacts the surface of the main board 22 (here, the CPU mounted on the main board 22), and the heat radiating member 31 The radiator 36 attached to the rear surface comes into contact with the surface of the sub-board 23. Further, the heat radiation sheets 34, 34 attached to the outer surfaces of the mounting legs 32, 32 abut on the inner surface of the front outer peripheral wall 11. Further, the heat radiator 38 attached to the rear surface of the sub-board 23 comes into contact with the contact portion 39 of the rear case 3. Therefore, the heat generated in the main board 22 and the sub board 23 is transmitted to the front case 2 and the rear case 3 via the heat radiating member 31 and the heat radiating body 38 and is radiated to the outside of the main body case 4. The temperature of the sub-board 23 is lowered, and consequently the temperature of the internal space of the main body case 4 is lowered. As a result of the experiment, the CPU temperature of the main board 22 was reduced by about 20 ° C., and the surface temperature of the sub board 23 was reduced by about 3 ° C.

  According to the intercom handset 1 having the above-described configuration, the main body case 4 includes the heat radiating member 31 in contact with the main board 22, the sub board 23, and the front case 2, and thus the main board 22 and the sub board. The heat generated in the main body case 4 can be efficiently radiated to the outside of the main body case 4, and the local temperature rise of the main board 22 and the sub board 23 can be suppressed, and consequently the temperature rise in the internal space of the main body case 4 can be suppressed. it can.

  In addition, the heat dissipating member 31 is provided with mounting legs 32, 32 formed in a band shape, and the waterproof rib 12 is provided with notches 37, 37,... In which connecting portions 33a, 33a,. The connecting portions 33a, 33a,... Are disposed in the notches 37, 37,... And the heat radiation member 31 is mounted on the main body by fitting the mounting legs 32, 32 between the front outer peripheral wall 11 and the waterproof rib 12. Since it comprises so that it may attach in case 4, the heat radiating member 31 can be attached very easily. Furthermore, since the heat radiating member 31 is positioned on the outer side of the main body case 4 with respect to the waterproof rib 12, the heat dissipation effect is higher than when the heat radiating member 31 is positioned inside the waterproof rib 12. In addition, it is not necessary to separately provide a mounting portion or the like for mounting the heat radiating member 31 in the main body case 4, and it can be easily attached to the ready-made product, and the space in the main body case 4 can be used effectively.

  In addition, a radiator 38 is attached to the rear surface of the sub-board 23, and a contact portion 39 that can contact the radiator 38 is formed on the rear case 3. I am trying. Therefore, the temperature of the sub-board 23 can be further reduced.

  Note that the interphone device according to the present invention is not limited to the aspect of the embodiment described above, and the overall configuration of the interphone device as well as the configuration related to the heat dissipation structure and the like are within the scope of the present invention. Thus, it can be changed as necessary.

For example, in the said embodiment, although the heat radiating sheet 34 is stuck on the outer surface of the attachment leg part 32, you may comprise so that the heat radiating sheet 34 may not be attached. Furthermore, the outer surface of the mounting leg portion 32 does not necessarily have to be in contact with the inner surface of the front outer peripheral wall 11. By adopting this configuration, the heat dissipation member 31 after mounting is somewhat rattled and the temperature rise is suppressed. However, it is possible to prevent local high temperature of the substrate.
Moreover, about the shape of the attachment leg part 32, it is good also as a shape from which the 1st attachment part and the 2nd attachment part are not a series like the said embodiment, and also forming the 1st attachment part in intermittent strip | belt shape. Is also possible. That is, as long as it fits between the front outer peripheral wall 11 and the waterproof rib 12, the shape can be changed as appropriate.

Furthermore, it is possible to change the design as to whether or not the radiator 38 is attached to the sub-board 23, and the sub-board 23 may not be provided in the first place (that is, the present invention is also applicable to an interphone device without the sub-board 23. Is possible).
Furthermore, needless to say, it is possible to appropriately change where on which substrate the substrate contact portion 33 of the heat radiating member 31 is contacted.

Furthermore, in the above-described embodiment, the concave groove 14 is provided in the front end portion of the rear outer peripheral wall 13. For example, on the front side of the rear case 3, a position spaced a predetermined distance from the inner side of the rear outer peripheral wall 13. The groove 14 may be provided on the front side of the rear case 3, and the position of the groove 14 can be changed as appropriate.
Moreover, in the said embodiment, although notch 37, 37 ... is provided in the waterproof rib 12 as an arrangement | positioning part, a notch may be provided in the ditch | groove 14 side and a through-hole is formed in the waterproof rib 12. Thus, there is no problem even if the arrangement portion is provided, and the position and shape of the arrangement portion can be changed in design.
In addition, although the interphone slave unit has been described in the above embodiment, the interphone device of the present invention is an interphone device in which waterproof ribs protrude from the front outer peripheral wall of the front case at a predetermined interval. If so, the present invention can be favorably applied to other interphone devices such as an interphone master unit.

  1. Interphone equipment 2. Front case 3. Rear case 4. Main body case 11. Front outer peripheral wall (outer peripheral wall) 12. Waterproof ribs 13. Rear outer peripheral wall 14 ..Dove groove (waterproof recess) 22 ..Main board 23 ..Sub board 31 ..Heat dissipation member 32 ..Mounting leg (mounting part) 33 ..Board contact part 33 a. .., 33b..Contact part, 34, 35..Heat dissipation sheet, 36, 38..Heat radiator, 37..Notch (arrangement part), 39..Contact part.

Claims (3)

Various substrates are installed in a body case that covers the front of the rear case with a front case formed in a box shape that opens to the rear,
On the rear surface side of the front case, a waterproof rib extending along the outer peripheral wall is projected rearward at a position that is inward from the outer peripheral wall of the front case by a predetermined distance. In addition, an intercom device provided with a waterproof recess into which the tip of the waterproof rib can be inserted,
A contact portion that contacts at least a part of the substrate, a mounting portion that can be fitted between the outer peripheral wall and the waterproof rib, and the contact portion and the mounting portion. With a metal heat dissipating member having a connecting portion to be connected,
An interphone device, wherein a disposing portion for disposing the connecting portion is provided in the waterproof rib or the waterproof recess.   While sticking a heat radiating sheet containing a heat conductive resin to the outer surface of the mounting portion, when the mounting portion is fitted between the outer peripheral wall and the waterproof rib, the heat radiating sheet of the outer peripheral wall The intercom device according to claim 1, wherein the intercom device is in contact with an inner surface.   The interphone device according to claim 1 or 2, wherein a heat radiating body including a heat conductive resin is attached to the substrate, and a contact portion that contacts the heat radiating body is provided on an inner surface of the main body case. .

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