JP2008135672A - Temperature adjustment device for electronic device, its temperature adjusting method, and the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temperature adjusting device for an electronic device, which can adjust an electronic component mounted in the electronic device to an optimal temperature. <P>SOLUTION: A temperature adjusting device for an electronic device comprises an air introduction pipe 13 whose one end is arranged in a housing side comprising a body case 1A and a front panel 2 and whose other end is arranged in an electronic component 6 side arranged in a temperature adjusting object region out of a plurality of electronic components and a blast member 25 which is arranged in the air introduction pipe 13 and which sends air introduced from a housing 1A, 2 side into the electronic component 6 side arranged in the temperature adjusting object region. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present application belongs to technical fields such as a temperature control device and a temperature control method for various consumer electronic devices that are required to be miniaturized, such as in-vehicle electrical equipment such as car stereos and car navigation systems, and notebook computers.

  In recent years, in-vehicle electrical equipment such as car stereos and car navigation systems and various consumer electronic devices such as notebook computers have been required to be small and thin.

  FIG. 1 is a longitudinal sectional view showing a state where a general car stereo is attached to a console panel of a vehicle, and FIG. 2 is a transverse sectional view showing a substrate region of FIG.

  As shown in FIG. 1, a car stereo main body case 1 is attached so that a front panel 2 thereof is substantially flush with a console panel 3 of a vehicle. The inside of the main body case 1 is configured by a structure such as a plurality of (two in FIG. 1) substrate units 7 on which the DVD mechanical unit 4, the tuner unit 5, and the electronic component 6 are mounted. Further, on the back side inside the main body case 1, a board 8, a connector 9 attached thereto, an air cooling fan 10 using an axial fan, and a cable attachment connector 11 for pulling out a cable for attachment to a vehicle-side power harness. Etc. are arranged. Some car stereo models are provided with other structures such as a monitor driving unit.

  In such in-vehicle electrical equipment such as a car stereo and a car navigation system, the above-described structures are incorporated in the main body case 1 so as to be three-dimensionally overlapped with each other. The inner space is occupied by the density. In addition, electronic parts 6 such as ICs and LSIs that generate a large amount of heat are scattered in the main body case 1, and many electronic parts 6 take measures for cooling them.

  1 and 2 show a case where an air cooling fan 10 using an axial fan is arranged on the back side of the main body case 1 as an example. The air cooling fan 10 is driven to allow air to flow into the main body case 1 from the air inlet 2a opened in the front panel 2 as indicated by an arrow, and to be discharged from the air cooling fan 10 to the outside of the main body case 1. . That is, in FIG.1 and FIG.2, it is trying to radiate heat from the electronic component 6 used as cooling object by inhaling air into the main body case 1, and making it flow.

On the other hand, the invention disclosed in Patent Document 1 relates to an electronic device in which an electronic device that generates heat and a blower member that exhausts internal air are attached, and an opening provided in a main body case of the electronic device and the electronic device A cool air generating device provided in a room where the device is installed is detachably connected by a flexible pipe, and cool air blown from the cool air generating device is introduced into the electronic device to cool the electronic device. It is what.
JP 2000-349474 A

  However, in the prior art shown in FIG. 1 and FIG. 2, as the structure inside the main body case 1 increases in density, there are many cases where the fluidity of the air around the electronic component 6 that generates heat cannot be sufficiently obtained. Yes. Such a portion may have a problem in stable operation of the electronic component 6 as a portion having poor heat dissipation. Therefore, although air is caused to flow inside the main body case 1 by the air cooling fan 10 and radiated from the electronic component 6 to be cooled as described above, at present, the heat radiating effect of the air cooling fan 10 is used. There is a limit.

  Moreover, in the invention disclosed in Patent Document 1, since a flexible pipe is required outside the electronic device, a large-scale connection structure with an air conditioner or the like is required to achieve the same in a vehicle-mounted electrical device. There is a problem that the body becomes necessary and the apparatus becomes large.

  Furthermore, in the heat dissipation mechanism using the invention disclosed in Patent Document 1 and the conventional air cooling fan 10, the internal structure of the electronic device has a very high density and the flow of air inside the main body case 1 is difficult. Even if cold air is introduced from the main body case 1 to those having a shield structure, there is a problem in that it is impossible to efficiently cool a portion having such poor heat dissipation. If it is attempted to forcibly cool a place with such poor heat dissipation, adverse effects such as lowering the temperature of other parts more than necessary will occur, and the energy for introducing cold air required for cooling will be reduced. There is a problem that becomes very large. The air cooling fan 10 is difficult to solve this problem because it has a size limit for mounting on an electronic device to be mounted at high density.

  The present application has been made in consideration of the above circumstances, and as an example of the problem, an electronic device temperature adjustment device capable of adjusting an electronic component mounted inside the electronic device to an optimum temperature, and its The object is to provide a temperature control method.

  In order to solve the above-described problem, the temperature adjustment device for an electronic device according to claim 1 is an electronic device in which a plurality of electronic components are mounted in a housing, and one end is arranged on the housing side, and the plurality Among the electronic components, an air introduction pipe having the other end arranged on the electronic component side arranged in the temperature adjustment target area, and an air introduced from the housing side arranged in the air introduction pipe are arranged in the temperature adjustment target area And a blower member that is fed to the electronic component side.

  In order to solve the above-described problem, in the temperature adjustment method for an electronic device according to claim 11, one end is arranged on the housing side, and the other electronic component side arranged in the temperature adjustment target region among the plurality of electronic components is arranged. An air introduction pipe having an end disposed therein, and a blower member that is provided in the air introduction pipe and that feeds air introduced from the housing side to the electronic component side disposed in the temperature adjustment target region. A first detection step of detecting a temperature of the electronic component by a first temperature sensor, a second detection step of detecting a temperature of the electronic component arranged in the temperature adjustment target region by a second temperature sensor, and the first And a control step of performing on / off control of the air blowing member based on the temperature detected by the first detection step and the second detection step.

  In order to solve the above-described problem, a temperature adjustment program for an electronic device according to claim 12 is an electronic device in which a plurality of electronic components are mounted in a housing, wherein one end is disposed on the housing side, and Among the plurality of electronic components, an air introduction pipe having the other end arranged on the electronic component side arranged in the temperature adjustment target area, and the air introduced from the housing side provided in the air introduction pipe to the temperature adjustment target area A first detection means for detecting, by a first temperature sensor, a temperature outside the housing, a computer included in a temperature control device of an electronic device comprising a blower member that is sent to the arranged electronic component side; Based on the second detection means for detecting the temperature of the electronic component arranged in the adjustment target region by a second temperature sensor, and the temperature detected by the first detection means and the second detection means, On wind member, characterized in that to the control means for turning off control function as.

  In order to solve the above problem, a recording medium according to a thirteenth aspect is characterized in that the temperature adjustment program according to the twelfth aspect is recorded so as to be readable by a computer.

  Hereinafter, the best embodiment of the present application will be described with reference to the accompanying drawings. Note that each embodiment described below applies the present application to a car stereo as an electronic device mounted in a vehicle, and cools or heats an electronic component mounted in the car stereo to adjust the temperature. It is an embodiment in the case of doing. Moreover, in each embodiment described below, the same or corresponding parts as those in FIGS. 1 and 2 are described using the same reference numerals.

(First embodiment)
With reference to FIGS. 3-6, the temperature control apparatus of the electronic device in 1st Embodiment of this application is demonstrated.

  3 is a longitudinal sectional view showing a car stereo equipped with a temperature control device according to the first embodiment of the present application, FIG. 4 is a transverse sectional view showing a substrate region of FIG. 3, and FIG. 5 is a temperature control according to the first embodiment of the present application. FIG. 6 is a flowchart showing the operation of the controller of FIG. 5.

  As shown in FIGS. 3 and 4, a car stereo main body case 1 </ b> A that is an electronic device is attached so that the front panel 2 is substantially flush with the console panel 3 of the vehicle. The main body case 1A and the front panel 2 constitute a housing of the present invention. The inside of the main body case 1A is constituted by a structure such as a DVD mechanism unit 4, a tuner unit 5, and a plurality of (two in FIG. 3) substrate units 7 on which electronic components 6 such as IC and LSI are mounted. . In addition, on the back side inside the main body case 1A, a board 8, a connector 9 attached thereto, an air cooling fan 10 using an axial fan, and a cable attachment connector for pulling out a cable for attachment to a vehicle-side power harness. Structures such as 11 are arranged.

  In this embodiment, as shown in FIGS. 3 and 4, an air introduction tube 13 made of a synthetic resin such as a polyethylene tube having excellent electrical insulation, heat resistance, and flexibility is disposed in the main body case 1 </ b> A. The air introduction pipe 13 has one end serving as an intake port disposed in a vehicle interior outside the main body case 1A, and the other end serving as an exhaust port disposed in a temperature adjustment target region among a plurality of electronic components in the main body case 1A. The electronic component 6 is arranged on the side.

In addition, the air introduction pipe 13 has a tube 15 with one end drawn into the vehicle interior outside the main body case 1A. The tube 15 has an inner diameter area of 5 mm ² . A net-like protective film (not shown) is attached so as to prevent foreign substances such as obstacles from entering.

  The other end of the tube 15 is connected to an internal fan described later, and is branched from the internal fan into three branch pipes 16 to 18. These branch pipes 16 to 18 are arranged on the electronic component 6 whose tip is arranged in the temperature control target region via a connection pipe 19 made of a synthetic resin such as a polyethylene tube having a slightly larger diameter than the branch pipes 16 to 18 respectively. Connected to the built-in tubes 20-22. Therefore, the air introduction pipe 13 of the present application is constituted by these tubes 15, branch pipes 16 to 18, and incorporation tubes 20 to 22.

Here, since the inner diameter area of the tube 15 is 5 mm ² , for example, as shown in FIG. 4, the inner diameter area of the branch pipes 16 and 17 is 2 mm ² , and the inner diameter area of the branch pipe 18 is 1 mm ^2. The inner diameter areas of the mounting tubes 20 and 21 are 2 mm ² , and the inner diameter area of the mounting tube 22 is 1 mm ² . Thus, by making the inner diameter area of the intake side of the tube 15 equal to the combined inner diameter area of the discharge tubes of the installation tubes 20 to 22, the air sucked from the intake port of the tube 15 is incorporated. Without lowering the flow rate at 20 to 22, the air can be discharged from the tip of the tubes 20 to 22 while maintaining the flow rate of the air sucked from the tube 15.

  The other end of the tube 15 is provided with an internal fan 25 using an axial fan as a blower member. By driving the internal fan 25, air introduced from the vehicle interior outside the main body case 1A is obtained. Through the branch pipes 16 to 18, the electronic tubes 6 are forcibly sent from the built-in tubes 20 to 22 to the electronic components 6 arranged in the temperature control target region.

  Therefore, the temperature control apparatus according to the present embodiment is a tube 15 that is a fine tube that can be piped in a highly densified device with a small gap or in a shield, etc., and the tube 20 for incorporation. Since ˜22 is used, there is no influence on the product design except that the small-diameter inlet of the tube 15 is arranged in the vehicle interior. In FIGS. 3 and 4, although the air inlet which is one end of the tube 15 is drawn out to the back side of the main body case 1A, the air inlet 2a opened in the front panel 2 is not projected into the vehicle interior. You may make it attach.

  The air introduction pipe 13 including the tube 15, the branch pipes 16 to 18, and the installation tubes 20 to 22 is hermetically sealed including the internal fan 25 except for the intake port and the exhaust port, and only the power cable of the internal fan 25 is electrically connected. It is configured to allow connection. Note that the internal fan 25 is not limited to the axial flow type, and if a small fan is used, the position in the main body case 1A can be appropriately determined depending on the product, and the internal fan 25 can be arranged at a free position.

  As described above, in the temperature control device of the present embodiment, since the intake port of the tube 15 is arranged in the vehicle interior, the temperature is adjusted to a temperature at which the passenger can spend comfortably in a situation where the passenger is in the vehicle. You can inhale the air. Therefore, when the internal fan 25 is driven, air at a temperature at which a passenger can comfortably spend is sucked from the intake port of the tube 15 and is discharged from the built-in tubes 20 to 22 through the branch pipes 16 to 18, respectively. The arranged electronic component 6 can be reliably cooled or heated.

  Next, the temperature control circuit in this embodiment will be described with reference to FIG.

  As shown in FIG. 5, the first temperature sensor 26 is attached to the air inlet 2 a that opens to the front panel 2 that is the intake area, and detects the temperature in the vehicle interior outside the main body case 1 </ b> A. The second temperature sensor 27 is arranged in the temperature adjustment target area which is the target area, and detects the environmental temperature on the electronic component 6 side arranged in the temperature adjustment target area. For these temperature sensors 26 and 27, for example, a small chip type thermistor, a platinum thin film temperature sensor, or the like is used. The temperature sensor 26 is attached to the air inlet 2a opened in the front panel 2, so that the appearance design is not impaired.

  The controller 28 has a function as a control means, takes in a temperature signal detected by the temperature sensors 26 and 27, and performs on / off control of the internal fan 25. The controller 28 preferably uses an 8-bit microcomputer with a built-in A / D converter function. The controller 28 is not limited to the on / off control of the internal fan 25, and may adjust the fan air volume by voltage control. In this case, control is performed such as switching the voltage value to a plurality of stages to change the rotational speed of the fan in stages. Further, although the controller 28 can be relatively freely arranged in the empty space of the main body case 1A, a controller for a car stereo control system that is installed in advance may be used without providing a new one in this way. it can.

  Next, a design method for the temperature rise of the electronic component will be described.

First, the junction temperature (the upper limit temperature of the operating temperature range) should not be exceeded at the maximum operating temperature of the electronic component. That means
[Equation 1]
Tj = Trise + Tambient (A)
In the formula (A), Tj: junction temperature, Trize: temperature rise, Tambient: ambient temperature, and the junction temperature Tj is defined by the formula (A). In order to compensate for the operation of the product, the operating temperature range of the electronic component should be input to the junction temperature Tj for convenience of calculation. For example, in the case of an electronic component having a temperature range of −40 ° C. to + 85 ° C. If the temperature is 25 ° C., the allowable temperature rise Trise is Tj = 85 ° C., Tambient = 25 ° C.
[Equation 2]
Trise ≦ 85−25 = 60 [° C.] (B)
It is allowed up to 60 ° C, but when the ambient temperature Tambient is 60 ° C, the same calculation is performed.
[Equation 3]
Trise ≦ 85−60 = 25 [° C.] (C)
Thus, it is only acceptable up to about 25 ° C. Due to the internal structure of a product main body that has been mounted at a high density as in recent years, the temperature rise inside the product main body tends to increase, and this value increases the difficulty of design.

  Next, the temperature adjustment method in this embodiment is demonstrated based on the flowchart of FIG. In addition, the flowchart shown in FIG. 6 is started by turning on the temperature control device of the present embodiment. In the following description, the ambient temperature Tambient is the temperature of the target area (temperature adjustment target region).

  First, in step S 1, the temperature of the target area (temperature adjustment target region) detected by the second temperature sensor 27, that is, the ambient temperature Tambient is taken into the controller 28.

  Next, in step S2, it is determined whether the temperature of the target area (temperature adjustment target region) is within the set temperature. The value of the set temperature depends on the design specifications of the electronic component 6. For example, it is set as 10 degreeC <= Tambient <= 40 degreeC, and it is determined whether the ambient temperature Tambient of a target area (temperature adjustment object area | region) is in 10 to 40 degreeC. In addition, when the ambient temperature Tambient is outside the range of 10 ° C. to 40 ° C., for example, a case where the driver is not in the vehicle is assumed.

  When the ambient temperature Tambient is in the range of 10 ° C. to 40 ° C. (step S2; Yes), it is not necessary to adjust the temperature. Therefore, the power of the internal fan 25 is turned off in step S3, and the sampling time During this time, a standby state is set (step S4). That is, in this step S4, the ambient temperature Tambient is monitored at a constant period, and the controller 28 is in a standby state for the set time of the controller 28.

  On the other hand, when the ambient temperature Tambient is not within the range of 10 ° C. to 40 ° C. (step S2; No), it is determined in step S5 what the temperature of the target area is.

  When the temperature of the target area (temperature adjustment target region), that is, the ambient temperature Tambient exceeds 40 ° C., the process proceeds to step S6, and when the ambient temperature Tambient is less than 10 ° C., the process proceeds to step S7. In step S6 and step S7, the temperature Troom of the intake area (vehicle interior) detected by the first temperature sensor 26 is taken into the controller 28.

  In step S8, when the ambient temperature Tambient exceeds 40 ° C., the ambient temperature Tambient is compared with the vehicle interior temperature Troom. That is, the temperature of the target area (temperature adjustment target area) is compared with the temperature of the intake area. When the temperature of the target area (temperature adjustment target region) is equal to or lower than the temperature of the intake area (ambient temperature Tambient ≦ vehicle interior temperature Troom), the process proceeds to step S9. In step S9, the internal fan 25 is turned off. In this case, it is conceivable that the cooler is not yet cooled immediately after the occupant has boarded the vehicle left under the hot summer sun.

  In step S8, when the temperature of the target area (temperature adjustment target region) exceeds the temperature of the intake area (ambient temperature Tambient> vehicle interior temperature Troom), the process proceeds to step S10. In step S10, the internal fan 25 is powered on.

  Therefore, by turning on the power of the internal fan 25, air at a temperature at which the occupant can comfortably spend is sucked from the intake port of the tube 15 and discharged from the built-in tubes 20 to 22 through the branch pipes 16 to 18, respectively. The electronic component 6 whose temperature has risen above the temperature of the design specification arranged in the temperature adjustment target region can be cooled.

  On the other hand, in step S11, when the ambient temperature Tambient is less than 10 ° C., the ambient temperature Tambient and the vehicle interior temperature Troom are compared. When the temperature of the target area (temperature adjustment target region) is equal to or higher than the temperature of the intake area (ambient temperature Tambient ≧ vehicle interior temperature Troom), the process proceeds to step S12. In step S12, the internal fan 25 is turned off. That is, in step S12, since the vehicle interior temperature Troom is lower than the ambient temperature Tambient and is too low, the internal fan 25 is turned off. In this case, a situation may be considered in which the heating is not effective immediately after the occupant has boarded the vehicle left in the severe winter season.

  In step S11, when the temperature of the target area (temperature adjustment target region) is lower than the temperature of the intake area (ambient temperature Tambient <vehicle interior temperature Troom), the process proceeds to step S10 and the internal fan 25 is turned on. . In this case, since the ambient temperature Tambient is lower than the vehicle interior temperature Troom, it is possible to reliably heat the electronic component 6 that is disposed in the temperature adjustment target region and has a temperature lower than the design specification temperature.

  And after completion | finish of the process of step S9, step S10, and step S12, it progresses to step S13. In this step S13, a standby state is set during the sampling time. That is, in this step S13, the ambient temperature Tambient and the passenger compartment temperature Troom are monitored at regular intervals.

  Next, in step S14, it is determined whether or not the temperature of the target area (temperature adjustment target region) exceeds the limit. Specifically, it is determined whether the ambient temperature Tambient is higher than 85 ° C. or lower than −40 ° C. These set values depend on the specifications of the electronic component 6 and the like arranged in the temperature adjustment target area.

  When the temperature of the target area does not exceed the limit (step S14; No), the process returns to step S1 and the above process is executed again.

  When the temperature of the target area exceeds the limit (step S14; Yes), the process proceeds to step S15. In step S15, since the operating temperature range of the electronic component is exceeded, an emergency process such as issuing a warning with a buzzer, a lamp, etc., and turning off the power is performed, and then the entire process is terminated.

  Note that a program corresponding to the flowchart shown in FIG. 6 is recorded in an information recording medium such as a flexible disk or a hard disk (which may be installed in the electronic apparatus of the present embodiment), or the program is stored on the Internet or the like. It is possible to make the microcomputer function as the controller 28 according to the present embodiment by recording it after obtaining it through the network, reading it out with a general-purpose microcomputer, and executing it.

  Next, the operation and effect of this embodiment will be described.

  When the temperature control device of this embodiment including the tube 15, the branch pipes 16 to 18, the installation tubes 20 to 22 and the internal fan 25 is installed in the main body case 1 and the internal fan 25 is driven, the inside of the tube 15 is atmospheric pressure. As a result of this change, the air at the proper temperature in the vehicle compartment is sucked from the intake port, and is discharged from the tubes 20 to 22 through the branch pipes 16 to 18 respectively, and the air at the proper temperature in the vehicle interior is the target air. It is taken in around the electronic component 6.

  As a result, it is possible to obtain an effect of reducing a temperature rise at a location where heat dissipation is poor. For example, if the temperature rise in the electronic component 6 is 50 ° C. with the upper limit of the use temperature range of the electronic component 6 being + 85 ° C., if air of 15 ° C. to 35 ° C. flows into the electronic component 6, 35 ° C. + 50 ° C = 85 ° C, and the restriction of the above-described formula (A) can be easily allowed.

  Further, in this embodiment, it is only necessary to install a small intake port of the tube 15 on the exterior of the car stereo that is an electronic device, and the air sucked from the intake port is cold air blown directly from the dedicated cooling device. There is no need. Incidentally, since the air introduction tube 13 including the tube 15, the branch tubes 16 to 18, and the tubes 20 to 22 for incorporation is capable of a very fine structure, it is as if a human capillary vessel even for a high-density internal structure. As described above, the temperature adjustment operation can be locally performed on a portion with poor heat dissipation simply by devising the arrangement method.

  Furthermore, if the air introduction tube 13 of the present embodiment is stretched like a capillary blood vessel in the manufacturing process of the electronic device in which the structures are mounted at a high density, the difficulty of assembling work becomes extremely high. Therefore, in the present embodiment, only the fine assembling tubes 20 to 22 that are discharge portions to the temperature control target region are attached in the substrate unit attaching process in advance, and the tube 15 and the branch are branched during the assembling work into the main body case 1A. The connecting tubes 19 are connected between the built-in tubes 20 to 22 and the branch tubes 16 to 18 so that the pipes 16 to 18 can be connected.

  Therefore, in this embodiment, the tubes 20 to 22 for incorporation and the branch tubes 16 to 18 are connected to the temperature control target region by connecting the tubes 20 to 22 and the branch tubes 16 to 18 via the connection tube 19 reliably and easily. be able to.

  In this embodiment, the built-in tubes 20 to 22 and the branch pipes 16 to 18 are connected via the connection pipe 19. However, the internal fan 25 is built in the tube 15, and the tube 15 and the branch pipe 16 are connected. To 18 may be connected via a connecting pipe 19. And as for the tubes 20-22 for an assembly, you may make it branch the front-end | tip further into plurality.

  Further, in the present embodiment, the internal fan 25 can be arranged using an empty space in the main body case 1A. Incidentally, as in the prior art, it is necessary to attach an air cooling fan 10 to the exterior part so that air can be sucked and discharged, and an electronic device mounted with high density is additionally provided with a fan in the exterior part. It is difficult to do. Therefore, in the present embodiment, the internal fan 25 is arranged using the empty space in the main body case 1A, so that the internal fan 25 can be reliably arranged.

  As described above, according to the present embodiment, one end of the tube 15 is arranged on the housing side including the main body case 1 and the front panel 2 and the electronic component 6 arranged in the temperature adjustment target region among the plurality of electronic components is arranged. The tube 15 having the other ends of the built-in tubes 20 to 22, the branch pipes 16 to 18, and the air introducing pipe 13 including the incorporating tubes 20 to 22 and the air introducing pipe 13 are provided and introduced from the main body case 1 </ b> A side. And an internal fan 25 for sending the air to the electronic component 6 side disposed in the temperature control target region, air having a temperature at which a passenger can comfortably spend in the passenger compartment is sucked from the intake port of the tube 15. The electronic components 6 are discharged from the tubes 20 to 22 to the electronic components 6 through 16 to 18 and are arranged in the temperature adjustment target region to be adjusted to the optimum temperature. Rukoto can.

  Moreover, according to this embodiment, since the air introduction pipe | tube 13 which consists of the tube 15, the branch pipes 16-18, and the tubes 20-22 for incorporation is a flexible polyethylene tube, it goes into the main body case 1A. Assembling work becomes easier. The air introduction tube 13 radiates heat even in a high-density internal structure because the electronic component 6 side arranged in the temperature control target region is branched by the branch tubes 16 to 18 and the tubes 20 to 22 for incorporation. It is possible to locally adjust the temperature of a bad place.

  Furthermore, according to the present embodiment, the internal fan 25 is controlled to be turned on / off based on the detected temperatures of the first temperature sensor 26 and the second temperature sensor 27, so that it is arranged in the temperature adjustment target region. The electronic component 6 can be easily adjusted to an optimum temperature.

  In the present embodiment, the electronic component 6 side arranged in the temperature adjustment target region is branched by the branch pipes 16 to 18 and the built-in tubes 20 to 22. The electronic component 6 disposed in the temperature adjustment target region may be cooled or heated by sucking in air having an appropriate room temperature and discharging the air directly from the other end of the tube 15.

  Further, in the present embodiment, if one end of the air introduction pipe 13 is disposed in the air inlet 2a that opens to the front panel 2, a small intake port is not installed in the exterior of the car stereo, so that the appearance of the car stereo is improved. There is no loss of appearance. Similarly, the same effect can be obtained even if one end of the air introduction tube 13 is arranged so as to extend further outward from the back surface of the main body case 1A.

(Second Embodiment)
7 is a perspective view showing a discharge nozzle according to the second embodiment of the present application, FIG. 8 is a perspective view showing a state where the discharge nozzle of FIG. 7 is attached to a BGA package, FIG. 9 is a plan view of FIG. 8, and FIG. It is sectional drawing which shows the effect | action of 7 discharge nozzles. The same or corresponding parts as those in the first embodiment will be described using the same reference numerals.

  As shown in FIGS. 7-10, in this embodiment, the discharge nozzle 30 integrally formed from synthetic resin materials, such as polyester, is attached to the front-end | tip of the tubes 20-22 for an assembly. The discharge nozzle 30 includes a connecting portion 31 connected to the built-in tubes 20 to 22, an expanding portion 32 whose diameter expands flatly from the connecting portion 31, and a planar core connected to the expanding portion 32. The cover portion 33 is formed in a letter shape, and the mounting flange 35 is formed on both sides of the cover portion 33 and is fixed to the substrate 34.

  By the way, in the present embodiment, when an LSI that tends to be a heat source as an electronic component arranged in the temperature adjustment target region is a BGA (Ball Grid Allay) package 36, the BGA package 36 is cooled.

  In other words, the BGA package 36 is covered with the covering portion 33 of the discharge nozzle 30 to cover almost the outer peripheral surface of the BGA package 36. As in the first embodiment, when the power of the internal fan 25 is turned on, air at a temperature at which passengers in the passenger compartment can comfortably spend is sucked from the intake port of the tube 15, and the branch pipes 16 to 18 are incorporated. As shown in FIG. 9, it discharges | emits from the discharge nozzle 30 through the tubes 20-22. Then, as shown in FIG. 10, the air spreads in the horizontal direction through the widened portion 32 and the covering portion 3 of the discharge nozzle 30, and is mainly discharged through the gap between the solder balls 37 below the BGA package 36 to the opposite side. Therefore, air is accurately discharged to the chip located near the center of the LSI, the heated BGA package 36 can be reliably cooled, and the ambient temperature can be effectively controlled to an appropriate temperature.

  As described above, according to the present embodiment, the discharge nozzle 30 that covers the substantially half of the outer peripheral surface of the BGA package 36 is connected to the tips of the assembling tubes 20 to 22, so that the BGA package 36 is effectively brought to an appropriate temperature. Can do. Further, since the discharge nozzle 30 is attached so as to cover the BGA package 36, it can be attached without dividing the space in the main body case 1A. Furthermore, since the discharge nozzle 30 is manufactured by integral molding from a synthetic resin material such as polyester, it can be easily manufactured.

  In the present embodiment, the BGA package 36 is covered with the covering portion 33 of the discharge nozzle 30 so as to cover almost the outer peripheral surface of the BGA package 36. However, the BGA package 36 is covered with at least a part of the BGA package 36. That's fine.

(Third embodiment)
FIG. 11 is a perspective view showing the discharge nozzle in the third embodiment of the present application, and FIG. 12 is a cross-sectional view showing the operation of the discharge nozzle of FIG.

  As shown in FIG.11 and FIG.12, in this embodiment, the discharge nozzle 40 integrally formed from synthetic resin materials, such as polyester, is attached to the front-end | tip of the tubes 20-22 for an assembly. As in the second embodiment, the discharge nozzle 40 includes a connection portion 41 connected to the tubes 20 to 22 for installation, an expansion portion 42 whose diameter expands flatly from the connection portion 41, and the expansion portion. A box-shaped portion 43 provided continuously with the portion 42 and mounting flanges 44 formed on both sides of the box-shaped portion 43 and on the opposite side of the widened portion 42 to be fixed to the substrate 34 are formed.

  By the way, the discharge nozzle 40 of the present embodiment is an auxiliary member when the temperature adjusting device cannot be disposed on the mounting surface of the BGA package 36.

  Therefore, in the present embodiment, the box-shaped portion 43 of the discharge nozzle 30 is disposed so as to be sealed in the plurality of through holes 34 a disposed near the center of the BGA package 36. As in the first embodiment, when the power of the internal fan 25 is turned on, air at a temperature at which passengers in the passenger compartment can comfortably spend is sucked from the intake port of the tube 15, and the branch pipes 16 to 18 are incorporated. As shown in FIG. 12, it discharges | emits from the discharge nozzle 40 through the tubes 20-22. Then, the air spreads in the horizontal direction through the expanded portion 42 and the box-shaped portion 43 of the discharge nozzle 40, and air is sent from the back surface of the substrate 34 of the BGA package 36, and the BGA package 36 passes through the plurality of through holes 34a. Since the air is discharged from the four sides, air is accurately discharged to the chip located near the center of the LSI, the heated BGA package 36 can be reliably cooled, and the ambient temperature can be effectively controlled to an appropriate temperature.

(Fourth embodiment)
13 is a longitudinal sectional view showing a car stereo equipped with a temperature control device according to the fourth embodiment of the present application, FIG. 14 is a transverse sectional view showing the substrate region of FIG. 13, and FIG. 15 is a temperature control according to the fourth embodiment of the present application. The block diagram which shows a circuit, FIG. 16 is sectional drawing which shows the air pump in 4th Embodiment of this application. The same or corresponding parts as those in the first embodiment will be described using the same reference numerals.

  In the present embodiment, an air pump 50 that is driven by a DC power supply is provided in place of the internal fan 25 that uses an axial fan as a blower member in the first embodiment.

  As shown in FIGS. 13 and 14, one end of the tube 15 is drawn out into the vehicle interior outside the main body case 1 </ b> A, and the other end of the tube 15 is connected to the intake port of the air pump 50. Branch pipes 16 to 18 branched into three are connected to the outlet. These branch pipes 16 to 18 are respectively connected to tubes 20 to 22 for installation arranged in the electronic component 6 whose tip is arranged in the temperature adjustment target region via a connection pipe 19 having a slightly larger diameter than the branch pipes 16 to 18. It is connected.

  As shown in FIG. 15, the controller 28 takes in the temperature signal detected by the temperature sensors 26 and 27 and performs on / off control of the air pump 50. The controller 28 is not limited to the on / off control of the air pump 50, and may adjust the air volume by voltage control. In this case, control is performed such that the voltage value is switched to a plurality of stages and the rotational speed of a motor, which will be described later, which is a drive source, is changed in stages.

  As shown in FIG. 16, the air pump 50 includes a motor 51 driven by, for example, a DC 12 V power source, an eccentric cam 53 fitted to the output shaft 52 of the motor 51, and an upper portion inserted into the tip of the eccentric cam 53. A rubber diaphragm 54 that moves up and down as the eccentric cam 53 rotates, a pedestal 55 that fixes the edge of the diaphragm 54, and an air compression chamber partially constituted by the pedestal 55 and the diaphragm 54. 56.

  The air compression chamber 56 is surrounded by a diaphragm 54, a pedestal 55, an intake valve 57, and a discharge valve 58. The intake valve 57 is disposed on the intake port communication portion 59 side communicating with the intake port. The discharge valve 58 is disposed on the discharge port communication portion 60 side communicating with the discharge port. In the air compression chamber 56, a one-way flow of air from the intake port to the discharge port is generated using the intake valve 57 and the discharge valve 58.

  Next, operation | movement of the air pump 50 comprised in this way is demonstrated.

  As shown in FIG. 16, when the motor 51 is driven, the eccentric cam 53 fitted to the output shaft 52 rotates. As the eccentric cam 53 rotates, the diaphragm 54 moves up and down in the air compression chamber 56. Then, the air flowing into the air pump 50 is sent out in one direction by a pair of intake valves 57 and discharge valves 58 provided in the air compression chamber 56, and rectification is performed. That is, when the diaphragm 54 is pulled upward, the discharge valve 58 is closed and the intake valve 57 is opened, and when the diaphragm 54 is compressed downward, the intake valve 57 is closed and the discharge valve 58 is opened.

  As a result, air is sucked from one end of the tube 15 drawn into the vehicle interior outside the main body case 1A, and this air is drawn from the intake port of the air pump 50 to the intake port communication portion 59, the intake valve 57, and the air compression chamber 56. After passing through the discharge valve 58 and the discharge port communication portion 60, the tip is disposed in the electronic component 6 in the temperature control target region via the branch pipes 16 to 18 branched into three from the discharge port of the air pump 50. It is possible to cool the electronic component 6 that has been discharged from the tubes 20 to 22 and whose temperature has risen above the temperature of the design specification arranged in the temperature adjustment target region.

  As described above, according to the present embodiment, since the air pump 50 is used as the blower member, the air volume is remarkably increased, which is effective when the internal fan 25 of the first embodiment cannot obtain a sufficient air volume. is there.

  In addition, although this embodiment demonstrated the case where the air pump 50 shown in FIG. 16 was used, other than this, for example, the air pump disclosed by Unexamined-Japanese-Patent No. 2005-98195 and Unexamined-Japanese-Patent No. 2001-20867 is used. In short, if it is a general small air pump, the same effect is acquired.

  Further, the present application is not limited to the above embodiments, and various modifications can be made. For example, in each of the above-described embodiments, an example in which the present application is applied to a car stereo as an example of an electronic device has been described. However, the present invention is not limited thereto, and various other vehicle-mounted electrical devices such as a car navigation system and a notebook computer are used. It can also be applied to consumer electronic devices. When applied to a notebook computer, for example, air at a temperature at which an operator in the room can spend comfortably is sucked.

It is a longitudinal cross-sectional view which shows the state which attached the general car stereo to the console panel of a vehicle. It is a cross-sectional view which shows the board | substrate area | region of FIG. It is a longitudinal cross-sectional view which shows the car stereo which attached the temperature control apparatus in 1st Embodiment of this application. FIG. 4 is a transverse sectional view showing a substrate region of FIG. 3. It is a block diagram which shows the temperature control circuit in 1st Embodiment of this application. It is a flowchart which shows operation | movement of the controller of FIG. It is a perspective view which shows the discharge nozzle in 2nd Embodiment of this application. It is a perspective view which shows the state which attached the discharge nozzle of FIG. 7 to the BGA package. It is a top view of FIG. It is sectional drawing which shows the effect | action of the discharge nozzle of FIG. It is a perspective view which shows the discharge nozzle in 3rd Embodiment of this application. It is sectional drawing which shows the effect | action of the discharge nozzle of FIG. It is a longitudinal cross-sectional view which shows the car stereo which attached the temperature control apparatus in 4th Embodiment of this application. FIG. 14 is a transverse sectional view showing a substrate region of FIG. 13. It is a block diagram which shows the temperature control circuit in 4th Embodiment of this application. It is sectional drawing which shows the air pump in 4th Embodiment of this application.

Explanation of symbols

1A: Body case 2: Front panel 3: Console panel 4: DVD mechanical unit 5: Tuner unit 6: Electronic component 7: Board unit 8: Board 9: Connector 10: Air cooling fan 13: Air introduction pipe 15: Tube 16- 18: Branch pipe 19: Connection pipe 20-22: Tube for incorporation 25: Internal fan 26: First temperature sensor 27: Second temperature sensor 28: Controller 30: Discharge nozzle 34: Substrate 36: BGA package 40: Discharge Nozzle 50: Air pump

Claims (13)

An electronic device having a plurality of electronic components mounted in a housing,
An air introduction pipe having one end arranged on the housing side and the other end arranged on the electronic component side arranged in the temperature adjustment target region among the plurality of electronic components;
A blower member that is provided in the air introduction pipe and sends air introduced from the housing side to the electronic component side disposed in the temperature adjustment target region;
A temperature control device for electronic equipment, comprising: In the temperature control apparatus of the electronic device of Claim 1,
The temperature adjusting device for an electronic device, wherein the air introduction tube is a flexible resin tube. In the temperature control apparatus of the electronic device of Claim 1 or 2,
The electronic device temperature adjustment device, wherein the air introduction pipe is branched into a plurality of branch pipes on the electronic component side disposed in the temperature adjustment target region. In the temperature control apparatus of the electronic device of Claim 3,
The temperature control device for an electronic device, wherein the plurality of branch pipes are connected via a connection pipe. In the temperature control apparatus of the electronic device of Claim 1,
The temperature adjusting device for an electronic apparatus, wherein the casing includes a main body case and a front panel, and one end of the air introduction pipe is disposed at an air inlet opening in the front panel. In the temperature control apparatus of the electronic device of Claim 1,
The temperature adjustment device for an electronic device, wherein the housing includes a main body case and a front panel, and one end of the air introduction pipe is further extended from the rear surface of the main body case to the outside. In the temperature control apparatus of the electronic device as described in any one of Claims 1 thru | or 6,
A temperature control device for an electronic apparatus, wherein a discharge nozzle that covers at least a part of an electronic component disposed in the temperature control target region is connected to the other end of the air introduction pipe. In the temperature control apparatus of the electronic device as described in any one of Claims 1 thru | or 6,
An electronic apparatus temperature control apparatus, wherein an exhaust nozzle for exhausting air is connected to the other end of the air introduction pipe to a through hole of a substrate on which electronic components arranged in the temperature control target region are attached. In the temperature control apparatus of the electronic device of Claim 1,
A first temperature sensor for detecting a temperature outside the housing;
A second temperature sensor for detecting the temperature of the electronic component side disposed in the temperature adjustment target region;
Control means for performing on / off control of the air blowing member based on the detected temperature of the first temperature sensor and the second temperature sensor;
A temperature control device for electronic equipment, comprising: In the temperature control apparatus of the electronic device of Claim 1 or 9,
The temperature control device for an electronic device, wherein the air blowing member is an air pump. An air introduction pipe having one end arranged on the housing side and the other end arranged on the electronic component side arranged in the temperature adjustment target region among the plurality of electronic components;
A blower member that is provided in the air introduction pipe and sends air introduced from the housing side to the electronic component side disposed in the temperature adjustment target region;
A first detection step of detecting a temperature outside the housing by a first temperature sensor;
A second detection step of detecting a temperature on the electronic component side arranged in the temperature adjustment target region by a second temperature sensor;
A control step of controlling on / off of the air blowing member based on the temperature detected by the first detection step and the second detection step;
A method for adjusting the temperature of an electronic device, comprising: An electronic device in which a plurality of electronic components are mounted in a housing, wherein one end is disposed on the housing side, and the other end is disposed on the electronic component side disposed in the temperature adjustment target region among the plurality of electronic components. Included in a temperature adjustment device for an electronic device, comprising: an air introduction pipe; and a blower member that is provided in the air introduction pipe and feeds air introduced from the housing side to an electronic component side disposed in the temperature adjustment target region. Computer
First detection means for detecting a temperature outside the housing by a first temperature sensor;
A second detection means for detecting a temperature on the electronic component side arranged in the temperature adjustment target region by a second temperature sensor; and a temperature detected by the first detection means and the second detection means. And a function for controlling on / off of the air blowing member.   13. A recording medium in which the temperature control program according to claim 12 is recorded so as to be readable by a computer.

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