JPH03211796A - Radiator structure - Google Patents

Abstract

PURPOSE:To obtain excellent noise-free heat radiation structure at low cost without direct application of electric power by radiating the heat generated from a radiation components outside a frame by way of a ventilation hole, using the air which resonates with the sound pressure of a speaker in a resonance box and is discharged from an opening. CONSTITUTION:A sound pressure is generated when an attempt is made to drive a speaker 3. The sound pressure thus generated forces the air present in a resonance chamber 1d and a resonance pipe 1e to resonate the discharges the air in proportion to an output level of voice from an opening 1b. The air present in a radiation inter surface formed in the sheet-shaped radiation components 2 is warmed by the heat conveyed from a heating element 4 to the radiation component 2. As a result, the air discharged from an opening 1b moves the air heated by the components 2 and discharges forcedly outside a case 7 from a ventilation hole 7a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat dissipation structure for an audio device equipped with a resonance box.

[Conventional technology]

Conventional devices, as described in Japanese Utility Model Publication No. 63-185293, use an electric cooling fan to exhaust warm air inside the housing to the outside.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not take into account cost and quietness, and has problems such as increased power consumption, increased product cost, and noise such as motor drive noise and fan wind noise.

An object of the present invention is to provide a heat dissipation structure that does not directly use electric power, is low cost, and has excellent quietness.

[Means to solve the problem]

In order to achieve the above object, one aspect of the present invention is to install a heat dissipation component such as a heat dissipation fan in front of an opening provided on the front surface of a resonance box,
Furthermore, it is characterized by providing a slit-shaped ventilation hole in the front casing.

[Effect]

When the speaker inside the resonance box is driven, sound pressure is generated, which causes the air inside the resonance box to resonate, causing air to be blown out from the opening of the resonance box in proportion to the output level of the sound. Thereby, the air blown out from the opening is heated by the heat dissipation component and is discharged to the outside of the housing from the ventilation hole of the housing.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a perspective view of an embodiment of the present invention. A partition plate 1a divides the air inside a resonance box 1 installed inside a housing 7 of a radio cassette player or the like into a resonance chamber 1c and a sealed chamber 1d. It communicates with an opening 1b provided in the lower right corner. Further, the speaker 3 is fixed to the partition plate 1a with its vibration surface facing the resonance chamber.

A heat dissipating component 2 fixed to a substrate 6 by a fixing member 5 is installed on the entire surface of the opening 1b so that its heat dissipating surface formed in the shape of several plates is perpendicular to the opening 1b.

Further, a heating element 4 electrically connected to a substrate 5 is fixed to the lower surface of the heat dissipating component 2 so that the heating surface is brought into close contact with the heating element 4. A slit-shaped ventilation hole 7a is provided on the wall surface of the casing 7 facing the heat dissipation component 2.

The operation of this embodiment will be explained below. When the speaker 3 is driven, sound pressure is generated and it is transmitted to the resonance chamber 1.
d and resonance 'fJ 1 c=, and the air is blown out from the opening 1e in proportion to the audio output level. Further, the air between the plate-shaped heat radiating surfaces of the heat radiating component 2 is warmed by the heat transmitted from the heating element 4 to the heat radiating component 2.

As a result, the air discharged from the opening 1b is transferred to the heat dissipating component 2.
The heated air is moved and forcibly discharged to the outside of the casing 7 through the ventilation hole 7a.

According to this embodiment, forced heat radiation can be performed at low cost and with excellent quietness.

FIG. 2 is a perspective view of another embodiment of the invention.

The difference from FIG. 1 is the shape of the heat dissipation component 8. The embodiment shown in FIG. 1 had several plate-shaped heat dissipation surfaces, whereas the second embodiment
In the illustrated embodiment, a cylindrical heat radiation surface is used. Therefore, the sound generated from the opening 1b passes through the tube of the heat dissipation component 8 and exits to the outside, so that it is not trapped inside the housing 7, and a reduction in the acoustic effect can be suppressed.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the following effects.

That is, since electric power is not directly used for heat radiation, there is no need to increase power consumption. Furthermore, since no electric cooling fan is used, there are no parts costs, and no noise such as motor drive noise or cooling fan wind noise is generated. In addition, since heat is radiated using the wind pressure blown from the resonance box, it is possible to radiate heat more efficiently than natural heat radiation.

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the invention, and FIG. 2 is a perspective view of another embodiment of the invention. 1... Resonance box, 1a... Partition plate, lb... Opening, 1c... Resonance chamber, 1d... Closed chamber, le...
Resonance tube, 2... Heat dissipation component, 3... Speaker, 4...
...Heating element, 5...Fixing member, 6...Substrate, 7.
...Housing, 7a...Vent hole, 8...Heat dissipation parts.

Claims (2)

[Claims] 1. A heat dissipation structure consisting of a resonance box inside a housing, an opening provided on the front surface of the resonance box, a heat dissipation component installed in front of the opening, and a ventilation hole provided on the wall surface of the housing in front of the heat dissipation component, Heat radiation characterized in that heat generated from the heat radiation component is radiated to the outside of the housing through the ventilation hole using air that resonates with the sound pressure of a speaker inside the resonance box and is blown out from the opening. structure. 2. The heat dissipation structure according to claim 1, wherein the heat generating component has a cylindrical shape.