JPH0229278Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a small fan that uses a piezoelectric vibrator to vibrate a vibrating blade plate and blows air using the principle of beating blades.

[Conventional technology]

In the conventional small fan of this type, one end of a piezoelectric vibrator 1 is fixed to a support part 4 as shown in the third figure, and a vibrating blade plate 2 is connected to the other end of the piezoelectric vibrator 1 via a connecting member 3. It is installed in the vertical direction, and an alternating current voltage is applied between both electrodes 5a and 5b of the piezoelectric vibrator 1 to vibrate the vibrating blade plate 2 and blow air using the principle of beating blades. It is used to cool the cooled components 7 of the circuit device 8.

[The problem that the idea aims to solve]

In the above-mentioned conventional small fan, the vibrating blade plate 2 is vertically attached to the piezoelectric vibrator 1 and is long in the vertical direction. There was a problem in that the electronic circuit device 8 had to be made large in order to cool the electronic circuit device 7.

[Means to solve the problem]

In order to solve the above problems, the small fan of the present invention fixes one end of the piezoelectric vibrator 1 to the support part 4 as shown in the first figure, and attaches the vibrating blade plate 2 to the other end of the piezoelectric vibrator 1. The structure is such that the vibrator 1 is attached in a direction perpendicular to the direction of extension of the vibrator 1.

[Effect]

By doing so, the length in the vertical direction becomes shorter than the conventional one, and the length in the horizontal direction does not become longer than the length in the vertical direction. Therefore, the installation space is small.

〔Example〕

Embodiments of the small fan of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing an embodiment of the small fan of the present invention. 1 is a piezoelectric vibrator, for example, a piezoelectric film 6
Membrane electrodes 5a and 5b are provided on both sides of the electrode, and if necessary, the membrane electrodes 5a and 5b are insulated with an insulator.

One end of this piezoelectric vibrator 1 is fixed to a support part 4, and a connecting member 3 is attached to the other end of the piezoelectric vibrator 1 with a vibrating vane plate 2 made of synthetic resin that is lightweight and has a high breakage rate, such as polyethylene phthalate. The piezoelectric vibrator 1 is attached at a mounting angle of 90° with respect to the extending direction of the piezoelectric vibrator 1 via the piezoelectric vibrator 1.

The small fan according to this embodiment configured as described above has a cooling component (heat generating component such as a transistor of an amplifier) 7 of an electronic circuit device 8 as shown in the second diagram.
The vibrating blade plate 2 is installed with the vibrating vane plate 2 facing. When an alternating current voltage is applied between both electrodes 5a and 5b of the piezoelectric vibrator 1, the vibrating vane plate 2 vibrates, and the component 7 to be cooled can be cooled by blowing air to the component 7 according to the principle of beating wings.

In the small fan according to this embodiment, the vibrating blade plate 2 is installed laterally at an installation angle of 90 degrees with respect to the extending direction of the piezoelectric vibrator 1, so the length in the vertical direction is shortened, and the length in the horizontal direction is shortened. Since the length is not longer than the length in the vertical direction, the installation space is small, and even if the electronic circuit device 8 is in a narrow place as shown in the second figure, the device 8 can be made larger as shown in the fourth figure. It can be installed without having to do anything.

The mounting angle of the vibrating blade plate 2 may be smaller than 90° or slightly larger than 90°, and generally it can be mounted at an angle of 90°±30°. It may be installed on.

As described above, according to the present invention, since the vibrating vane plate 2 is attached perpendicularly to the piezoelectric vibrator 1,
The vertical length is shorter than conventional ones that are installed vertically, and the horizontal length is not as long as the vertical length, so less space is required for installation. Even in a narrow space such as the electronic circuit device 8, the device 8 can be installed without increasing its size.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the small fan of the present invention, Fig. 2 is a front view showing a state in which this embodiment is used to cool parts to be cooled in an electronic circuit device, and Fig. 3 4 is a front view showing an example of a conventional small fan, and FIG. 4 is a front view showing a state in which the conventional example is used to cool parts to be cooled of an electronic circuit device. DESCRIPTION OF SYMBOLS 1... Piezoelectric vibrator, 2... Vibrating blade plate, 3... Connection member, 4... Support part.

Claims (1)

[Scope of utility model registration request] A small fan characterized in that one end of a piezoelectric vibrator is fixed to a support part, and a vibrating blade plate is attached to the other end of the piezoelectric vibrator in a direction perpendicular to the direction of extension of the piezoelectric vibrator.