JPH09275658A - Heat radiator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide size and weight reduction for a heat radiator by mounting a fan motor in a tilting condition to a radiator, and forming an exhaust hole communicating with the inside of a housing at the fan motor mounting lower part surface of the radiator so as to be capable of forcibly-cooling the radiator and the housing inside with one fan motor. SOLUTION: In a housing 1, at vent hole 4 for exhausting (or sucking) heat generated inside is formed at its upper surface. At a radiator 2, a plurality of fans are mounted to conduct heat dissipation with high efficiency, and a fan motor 3 is mounted so as to be orthogonal to fins and is in a tilting condition. At the lower surface where the fan motor 3 is mounted, a plurality of exhaust holes 5 communicating with the inside of the housing 1 are formed. At the single side of the fan motor 3, a wind guide 6 is fitted to regulate wind flow. By conducting air blasting with the fan motor 3, the wind enters the inside of the housing 1 from the exhaust holes 5 of the radiator 2 to exhaust (or sucking) the heat in the housing 1 forcibly from the vent holes 4. At the same time, the fans of the radiator 2 are forcibly-cooled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat dissipation device using a fan motor used in a motor control device or the like.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand for miniaturization and weight reduction of heat dissipation devices, and particularly for devices that generate a large amount of heat, a forced cooling system in which a fan motor is attached to a radiator is adopted.

FIG. 3 is an external perspective view of a heat radiating device in a conventional motor control device, in which 1 is a housing, 2 is a radiator, and 3 is a fan motor.

In FIG. 3, a housing 1 containing a circuit having a heat source such as a power element has ventilation holes 4 on its upper surface and lower surface for discharging heat generated inside the housing to the outside by natural convection. ing. Most of the heat generated inside the housing 1 is transferred to the housing 1 and the radiator 2 having a plurality of fins,
A fan motor 3 provided at an end of the radiator 2 blows air to a plurality of fins of the radiator 2 to forcibly cool the radiator 2.

FIG. 4 is a diagram showing the flow of wind in a conventional forced cooling type heat radiator. The wind generated by the fan motor 3 flows along the fins of the radiator 2 in the direction of the arrow.
Dissipate the heat of the outside.

[0006]

However, in the above conventional structure, the height of the fins of the radiator is equal to or higher than the height of the fan motor for the purpose of protecting the fan motor. In addition, the heat radiation inside the housing was only natural convection due to the ventilation holes on the upper surface and the lower surface, and a sufficient space was required inside the housing.

It is an object of the present invention to provide a radiator and a radiator that forcibly cools the radiator and the inside of the housing with a single fan motor.

[0008]

In order to solve this problem, according to the present invention, a fan motor is mounted in an inclined manner with respect to a radiator, and an exhaust hole communicating with the inside of the housing is provided on the lower surface of the radiator on which the fan motor is mounted. It is configured to be provided.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention comprises: a casing having a ventilation hole for accommodating a circuit having a heat source; and a radiator having a plurality of fins arranged in the casing. ,
A fan motor for sending a mounting wind to the radiator to cool the radiator, the fan motor being attached to the radiator at a tilt, and an exhaust air communicating with the inside of the housing on a lower surface on which the fan motor is attached. This is a heat dissipation device characterized by the provision of holes. The fan motor is installed at an angle to the radiator, and the exhaust holes that connect to the inside of the housing are also provided, so the fan motor mounting height is reduced. Therefore, one fan motor has a function of forcibly cooling both the radiator and the inside of the housing at the same time.

Embodiments of the present invention will be described below with reference to FIGS. (Embodiment 1) FIG. 1 is an external perspective view of a heat dissipation device according to an embodiment of the present invention. In FIG. 1, a housing 1 has a ventilation hole 4 for discharging (or sucking in) heat generated inside. It is provided on the upper surface. The radiator 2 is provided with a plurality of fins for efficient heat dissipation, and the fan motor 3 is mounted orthogonal to the fins and further inclined. Fan motor 3
Exhaust hole 5 communicating with the inside of the housing 1 is attached to the lower surface
Are provided. A wind guide 6 is provided on one side of the fan motor 3 to regulate the flow of wind.

FIG. 2 is a diagram showing the flow of wind in the heat radiating device according to the embodiment of the present invention. The air is blown from the fan motor 3 in FIG. The heat inside the housing 1 is forcibly discharged (or sucked) from the ventilation hole 4. At the same time, the fins of the radiator 2 are forcibly cooled. Further, since the inside of the casing 1 is forcibly cooled, a sufficient space for heat dissipation is not required inside the casing 1.

Although the ventilation hole 4 for discharging (or sucking in) the heat inside the housing 1 is provided on the upper surface portion in the above-described structure, the ventilation hole 4 has the upper surface portion, the lower surface portion, the side surface portion, A combination with the back surface can be similarly implemented. Further, the mounting angle of the fan motor 3 is determined by both cooling efficiency and height regulation.

[0013]

As described above, according to the present invention, since the radiator and the inside of the housing can be forcibly cooled simultaneously by one fan motor, there is an advantageous effect that the radiator can be reduced in size and weight. .

[Brief description of drawings]

FIG. 1 is an external perspective view of a heat dissipation device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a wind flow of the heat dissipation device according to the embodiment of the present invention.

FIG. 3 is an external perspective view of a conventional heat dissipation device.

FIG. 4 is a diagram showing a wind flow of a conventional heat dissipation device.

[Explanation of symbols]

 1 case 2 radiator 3 fan motor 4 ventilation hole 5 exhaust hole

Claims (1)

[Claims] 1. A housing having a ventilation hole for accommodating a circuit having a heat source, a radiator having a plurality of fins disposed in the housing, and a wind attached to the radiator to cool the radiator. And a fan motor that is mounted on the radiator, and an exhaust hole communicating with the inside of the casing is provided on a lower surface of the radiator on which the fan motor is mounted.