JP2632048B2 - Ventilation fan - Google Patents

Description

The present invention relates to a ventilation fan having a ventilation filter.

(B) Conventional technology Conventionally, as this kind of ventilation fan, for example, Japanese Patent Application Laid-Open No. 62-2689
No. 37 is known. This ventilation fan draws letters and the like on the filter of the ventilation filter using a material that is difficult to get dirty, and when the ventilation filter becomes dirty, the letters are raised to indicate the time of replacement of the ventilation filter.

However, since the oil and the like do not adhere to the portion where the characters and the like are formed, the ability of collecting the oil and the like is reduced, and there is no material suitable for mass production of forming the characters and the like, so that the practicality is poor. .

(C) Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned drawbacks, and has as its object to provide a ventilation fan capable of easily and reliably displaying a time for replacing a ventilation filter.

(D) Means for solving the problem The filter of the ventilation filter is formed by dispersing and forming characters, patterns, etc. by printing different colors from the color of the filter dirt at approximately equal intervals over the entire surface and ventilating the color density. The higher the volume, the darker it becomes.

(E) Function Dirt such as oil is collected in proportion to the amount of air passing through the filter, and the color density of characters and patterns dispersed and formed at equal intervals over the entire surface of the filter is determined by the amount of air. By increasing the density as the number of parts increases, it becomes impossible to determine the characters, patterns, and the like at substantially the same time as a whole.

(F) Embodiment One embodiment of the present invention will be described below in detail with reference to the drawings.

Reference numeral 1 denotes a metal plate body, to which a motor 3 is fixed by a mounting piece 2, and a fan 4 is detachably mounted on a rotating shaft 3 a of the motor 3. Reference numeral 5 denotes a shutter rotatably mounted on the back side of the main body 1 and is opened when the fan 4 rotates.

Reference numeral 6 denotes a front panel made of synthetic resin which is detachably mounted on the front of the main body 1 and integrally forms the orifice 7 of the fan 4 with the orifice 7 when the front panel 6 is mounted on the main body 1. 1. 8
Reference numeral denotes an oil receiving container which is detachably attached to a lower portion of the front panel 6.

Reference numeral 9 denotes a ventilation filter which is detachably mounted on the front surface of the front panel 6 and includes a filter 10 formed of fibers such as polyester, and a synthetic resin frame 11 for reinforcing the filter 10. The ventilation filter 9 is configured such that the ventilation filter is elastically deformed, and the claw pieces 12 formed on the frame body 11 are engaged with the engagement holes 13 formed on the front panel 6 to be mounted. The filter 10 of the ventilation filter 9
Has characters printed at almost equal intervals over the entire surface,
Patterns and the like 14 are formed. This printing is performed using a commercially available ink of a color different from the color when the filter 10 becomes dirty and different from the color of the filter 10. Also, characters,
The pattern or the like 14 is the darkest in the printing of the central portion B outside the central portion A of the filter 10, the darkest in the printing of the central portion A, the lightest in the printing of the outer peripheral portion C, and the center portion A and the outer peripheral portion C. Is thinner as the distance from the central portion B increases.

When the motor 3 is energized, the motor 3 rotates,
The fan 4 rotates to draw air in the room from the front side of the main body 1, dirt such as oil is collected by the ventilation filter 9, and the air from which the oil or the like has been removed is exhausted from the rear side of the main body 1. Oil and the like are collected by the ventilation filter 9, so that the front panel 6
Oil and the like do not adhere to the fan 4 and the front panel 6
Etc. can be simplified.

Since the characters and patterns 14 are formed by printing, oil and the like are collected on the entire surface of the filter 10 regardless of the presence or absence of the characters and patterns 14.

In the ventilation filter 9, the central portion B has the largest air permeability, the central portion A has the largest amount, and the smallest portion has the outer peripheral portion C.
It is. Accordingly, oil and the like are also collected in proportion to the amount of air flow. However, since the printing of the central portion B is formed the darkest, the printing of the central portion A is formed next deeper, and the printing of the outer peripheral portion C is formed the thinnest. The characters and patterns 14 cannot be discriminated as a whole at substantially the same time, so that the user has high discriminability.

At the time of replacement, the characters and patterns 14 are printed in a color different from the stained color of the filter 10, so the characters and patterns 14
Can not be determined, it is possible to easily and surely confirm.

In the present embodiment, the density of printing on the filter 10 is changed in consideration of the ventilation amount of the ventilation filter 9, but the brightness and color of the printing may be changed in accordance with the ventilation amount.

(G) Effects of the Invention As described above, according to the present invention, the color density of characters, patterns, and the like dispersed and formed at equal intervals over the entire surface of a filter is increased in a portion having a larger amount of ventilation, so that the whole is substantially the same. At that time, the character, pattern, etc. cannot be determined, so that the user can easily and reliably recognize the time to replace the ventilation filter. In addition, since the characters, patterns, and the like of the ventilation filter can be formed by printing ink, there is an effect that mass productivity and practicality can be significantly improved.

[Brief description of the drawings]

Each of the drawings shows an embodiment of the present invention, FIG. 1 is a front view, and FIG. 2 is a sectional view. 1 ... body, 3 ... motor, 4 ... fan, 6 ... front panel, 9 ... ventilation filter, 10 ... filter, 14
.... letters, patterns, etc.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hideki Yukiyama 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Masafumi Maruyama 2-18-18 Keihanhondori, Moriguchi-shi, Osaka (72) Inventor Hidetoshi Fukuoka 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Atsushi 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric (56) References JP-A-62-268937 (JP, A)

Claims (1)

(57) [Claims] 1. A main body equipped with a motor having a fan, a front panel mounted on the front surface of the pair, and a ventilation filter covering the front surface of the front panel. A ventilation fan characterized by dispersing and forming characters, patterns, and the like by printing of different colors from the filter stains at substantially equal intervals over the area, and increasing the color density in a portion having a larger amount of ventilation.