JP2563602Y2 - Heat dissipation mechanism of electronic equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat radiating mechanism for an electronic device which radiates heat from an electric component or the like to the outside and suppresses a rise in the temperature of the inside.

[0002]

2. Description of the Related Art FIG. 7 is a perspective view showing the appearance of a power amplifier as a conventional electronic device, and FIG. 8 is an explanatory view showing a blower portion of a heat radiation mechanism. In these figures, reference numeral 3 denotes a panel attached to the rear side, and an outlet 3a through which air from the blower 23 passes is provided at a portion corresponding to the blower 23 described later.

Reference numeral 4 denotes a net, and an outlet 3a of the panel 3
Is mounted on the panel 3 so as to cover from the inner side (blower 23 side). 5 shows the outer plate, the front plate portion 5f, the upper plate portion 5t, and the left, and a right side plate portion 5l, a 5r those formed integrally, the suction port 5f ₁ is provided on the front plate portion 5f . Reference numeral 23 denotes a blower, which is attached to a printed circuit board (not shown) corresponding to the outlet 3a of the panel 3, and has a configuration in which the blades 23f rotate along the outer peripheral surface of a driving unit 23m having a built-in cylindrical motor. ing.

FIG. 9 is a diagram showing a temperature change at a temperature measurement point between the inside and the outside of the power amplifier. In FIG. 9, P _I
Indicates a temperature measurement point near the heat radiator to which the electric component is attached, and P _O indicates a temperature measurement point outside the power amplifier.

Next, the operation will be described. First, when the power is turned on and the power amplifier is turned on (operating),
The electrical components operate and perform their intended function. Since vanes 23f of the fan 23 rotates, air flows from the suction port 5f ₁ of the front plate portion 5f therein is drained from the air outlet 3a.

[0006] In the process in this way the air flows in the air outlet 3a from the suction port 5f _1, the air is warmed by the heat of the electrical components and the heat radiating body, namely air to take the heat of the electrical components and the heat radiating body, the internal Can be released to the outside. Therefore, the temperatures of the temperature measurement points P _I and P _O change over time as shown in FIG. 9, and the internal temperature rise can be suppressed to a predetermined temperature.

[0007]

Since the conventional heat radiating mechanism of the electronic device has only the net 4 considering the safety on the front surface (the rear surface of the panel 3) of the blower 23, the blower 2
The flow of the air discharged by 3 becomes as shown in FIG.
When the flow of the air discharged from the blower 23 is disturbed, the flow velocity of the air is reduced, the flow rate is reduced, and the heat radiation (cooling) efficiency is poor. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described inconvenience, and it is an object of the present invention to provide a heat radiation mechanism for an electronic device that can improve heat radiation efficiency with an inexpensive configuration.

[0008]

According to the present invention, a heat radiating mechanism for an electronic device is supported on a panel by a plurality of ribs at a portion of an outlet of a panel corresponding to a cylindrical driving portion of a blower. Is provided with a protruding portion that protrudes toward the opposite side of the blower as it goes toward the axis of.

[0009]

[Function] The air flow from the blower in this invention is
The flow is rectified into a flow with little disturbance by a convex portion provided in front of the driving unit.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the appearance of a power amplifier as an electronic apparatus to which the present invention is applied, FIG. 2 is a perspective view showing a heat dissipation mechanism with a panel and an upper plate removed, and FIG. 3 is an illustration showing the flow of air in a blower portion. 9, the same or corresponding parts as in FIGS. 7 and 8 are denoted by the same reference numerals, and description thereof is omitted.
In these figures, reference numeral 1 denotes a housing, in which a bottom plate portion 1b, a front mounting plate portion 1f, and left and right mounting portion plates 11l, 1r are integrally formed, and the rear side and the upper side are open. Has become.

Reference numeral 2 denotes a printed circuit board mounted on the bottom plate portion 1b of the housing 1, and includes various electric components 21, a radiator 22 and an air blower 23, which are made of aluminum and have the electric components 21 having a large calorific value. Is attached. The heat radiator 22 is a housing 1 (printed circuit board 2), it is arranged to divide a room partitioned by panels 3 and outer plate 5 described later to the first room R ₁ and the second chamber R ₂ A plurality of air passages 22 a connecting the first room R ₁ and the second room R ₂ are provided in the radiator 22.

Reference numeral 3 denotes a panel mounted on the rear side of the left and right mounting plates 11 and 1r of the housing 1. The panel 3 is supported on the panel 3 by a plurality of ribs 3c at a portion corresponding to the driving portion 23m of the outlet 3a. In addition, a hemispherical projection 3b is provided which projects toward the axis X of the drive unit 23m on the opposite side to the blower 23. P _I and P _O indicate temperature measurement points (FIG. 2). The temperature measurement point P _I is located near the radiator 22 inside the power amplifier, and the temperature measurement point P _O is located outside the power amplifier.

An electric component 21 is also mounted inside the front mounting plate 1f of the housing 1. Then, the suction port 5f ₁ of the outer plate 5 is provided on the first chamber R ₁ part, part of the mounting plate portion 1f before corresponding to the suction port 5f ₁ is cut, the blower 23 and the second room It is provided in a portion of R _2. FIG. 4 is a diagram showing a temperature change at a temperature measuring point in the present invention.

Next, the operation will be described. First, when the power is turned on and the power amplifier is turned on (operating),
The electric component 21 operates to exhibit the desired function. Then, since the blade 23f of the blower 23 rotates, the front plate 5
f is the air that has entered the first room R ₁ from the inlet port 5f ₁ of,
After traveling through the air passage 22a of the heat sink 22 to the second chamber R _2, is discharged from the air outlet 3a.

[0015] In the process in this way the air flows in the air outlet 3a from the suction port 5f _1, the air is warmed by the heat of the electrical components 21 and heat radiator 22 operates, i.e. air in the electrical component 21 and heat radiator 22 In order to take away heat, internal heat can be released to the outside. The air discharged from the outlet 3a by the blower 23 as described above flows along the outer peripheral surface of the convex portion 3b provided on the panel 3, and thus flows as shown in FIG.

[0016] Thus, since the turbulence generated in the flow of air discharged from the blower 23 is reduced, the flow rate is increased flow velocity of the air becomes higher, the heat radiation (cooling) because the efficiency is improved, the temperature measuring point P _I , P _O changes with time as shown in FIG. 4, and the internal temperature rise can be suppressed by about 10 ° C. as compared with the conventional example. Further, since the projection 3b may be provided on the panel 3, a conventional fan can be used, and the projection 3b and the rib 3c can be integrally formed when the panel 3 is formed. The intended purpose can be achieved by the configuration.

FIG. 5 is an explanatory view showing a main part of a heat radiation mechanism of an electronic apparatus according to another embodiment of the present invention. In FIG. 5, 3b ₁ denotes a convex portion, an outer peripheral surface has a parabolic shape protruding on the opposite side of the blower 23 toward the axis X of the drive unit 23m. Then, the convex portions 3b ₁ is provided in a portion of the air outlet 3a of the panel 3 corresponding to the driving portion 23m of the blower 23, it is supported by the panel 3 by a plurality of ribs 3c.

FIG. 6 is an explanatory view showing a main part of a heat radiation mechanism of an electronic apparatus according to still another embodiment of the present invention. In FIG. 6, 3b ₂ shows a convex portion, an outer peripheral surface has a half spindle-shaped projecting on the opposite side of the blower 23 toward the axis X of the drive unit 23m. And the convex part 3b ₂ is a blower 2
The third drive unit 23m is provided at the outlet 3a of the panel 3 corresponding to the drive unit 23m, and is supported by the panel 3 by a plurality of ribs 3c.

Also in the embodiment of FIGS. 5 and 6, the air flow from the blower 23 flows along the outer peripheral surfaces of the convex portions 3b ₁ and 3b ₂ provided in front of the driving portion 23m. 6, the air flow has less turbulence as compared with the embodiment of FIGS. The air flow of the embodiment of FIG. 6 is less turbulent than that of the embodiment of FIG. Therefore, heat radiation (cooling) can be performed more efficiently than in the embodiment shown in FIGS.

[0020]

As described above, according to the present invention, the panel is supported by a plurality of ribs on the panel at the outlet of the blower corresponding to the cylindrical drive section, and the axial center of the drive section is Since the convex portion protruding on the opposite side to the blower was provided as it headed, the flow of air discharged by the blower was along the convex portion and turbulence was reduced, so that the flow rate of air became faster Since the flow rate is increased and the heat radiation efficiency is improved, the rise in internal temperature can be suppressed low.
In addition, a conventional blower can be used because a convex portion may be provided on the panel, and the convex portion and the rib can be integrally formed when the panel is formed. There is an effect that can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a power amplifier to which the present invention is applied.

FIG. 2 is a perspective view showing a heat radiation mechanism with a panel and an upper plate of FIG. 1 removed.

FIG. 3 is an explanatory view showing the flow of air in a blower portion of the present invention.

FIG. 4 is a diagram showing a temperature change at a temperature measuring point in the present invention.

FIG. 5 is an explanatory view showing a main part of a heat radiation mechanism of an electronic device according to another embodiment of the present invention.

FIG. 6 is an explanatory view showing a main part of a heat radiation mechanism of an electronic device according to still another embodiment of the present invention.

FIG. 7 is a perspective view showing the appearance of a conventional power amplifier.

FIG. 8 is an explanatory view showing a blower portion of a conventional heat dissipation mechanism.

FIG. 9 is a diagram showing a temperature change at a temperature measurement point of a conventional power amplifier.

[Explanation of symbols]

1 the housing 2 printed board 21 electrical components 22 heat radiator 23 blower 23m driver 23f blade 3 panel 3a outlet 3b, 3b _1, 3b ₂ protrusion 3c the ribs 5 outer plate 5f front plate portion 5f ₁ inlet X axis

Claims (1)

(57) [Scope of request for utility model registration] 1. A heat dissipating mechanism for an electronic device, comprising: a panel provided with an air outlet through which air from the air blower passes is disposed on a front surface of the air blower whose blades rotate along an outer peripheral surface of a cylindrical driving unit; An electronic device, wherein a projection is provided at a portion of the outlet corresponding to a driving unit, the projection being supported by the plurality of ribs on the panel, and protruding toward the axis of the driving unit on the side opposite to the blower. Heat dissipation mechanism of equipment.