JPS61168399A - Electric iron - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an electric iron having a printed circuit board on which electronic components for controlling energization of electrical components such as heaters are arranged.

(C4 Prior Art Conventionally, for example, as disclosed in Japanese Unexamined Patent Application Publication No. 58-136399, a control board on which electronic parts for controlling energization of heaters, indicator lamps, etc. are disposed was installed inside the handle or Although the handle was placed inside with the handle facing backwards, the temperature of this internal space was considerably increased by the heat generated by the heater, and as a result, the performance of the electronic components deteriorated due to the influence of heat.

f] Problems to be Solved by the Invention Accordingly, there is an attempt to protect the electronic components by suppressing the rise in temperature of the atmosphere in which a printed circuit board having electronic components is placed.

B) Means for Solving the Problems The present invention has a structure in which a hollow handle body having a grip portion is erected on the upper surface of a base on which a heater is disposed, and a hollow handle body is provided on the rear surface of the handle body. A pair of standing ribs are formed inside the handle body in the vertical direction and are spaced apart from the inner wall of the handle body, and a printed circuit board on which an electronic component for controlling energization of electrical components such as the heater is disposed is mounted on the upstanding rib. It is attached to the upper rib at a distance from the rear wall of the handle body.

(e) Effects Due to this configuration, the hot air heated by the heater does not stay near the printed circuit board (it flows out), so it is possible to prevent performance deterioration of electronic components due to thermal effects.

(f) Example (1) is an electric iron body with a base (3) in which a heater (2) is embedded, and a screw (4) that covers this base (3).
a heat insulating cover (5) fixed with a heat insulating cover (5);
The handle body (6) is the same as the hollow grip part (7) (with a hollow front part (not shown)) fixed to the upper surface of the handle body (6). , a hollow rear part (9) that can be opened and closed by a back cover (8), and a lower part α0 that is fixed to the heat insulating cover (5) with its lower face open. The surface part (9) has a pair of inner walls uz
n+ is formed, and a pair of rising ribs (13) αj are formed with an interval (to) from this inner wall (121 (121), and both lower ends of the rising ribs (13) (13) are connected to a connecting rib circle. and both upper ends are open (151L).A short support part (13a) is integrally formed on the inner surface of the rising rib R13)U and the connecting rib (14). (1) is a fixing part having a pair of holding pieces (30a) (30a), and the upper end pressing part (8a) of the back cover (8).
) rotatably supports a protector αη that protects the power cord α6). A is a temperature sensor that detects the base temperature, and α9 is a voltage drop resistor. ■
is a printed circuit board that includes a power transformer, a relay, a triac,
Electronic components such as transistors, diodes, resistors, etc. (21
) are placed on its surface. This printed circuit board (1) is the supporting portion (13a) of the rising rib (13)...
and at that time, the rear plate (9) of the rear part (9).
a) and a gap fB) to form a heat insulating space (S).

According to such a configuration, hot air during use rises through the rising path (251G25+) formed at the interval (f), is guided by the holding piece (30a) of the fixing part (3), and penetrates the protector 09. The through hole (311) is discharged to the outside, so hot air does not stay near the printed circuit board ■, which prevents abnormal temperature rises in the electronic components (21).Moreover, there is a heat insulating space +81 on the back side of the printed circuit board ■. Because it is interposed, it is possible to prevent the temperature of the electronic component (■) from rising even further.This insulation space β) has an opening (2) at the top, so it is possible to efficiently (discharge) the hot air that has risen in temperature. (to) is a boss part for fixing the back cover (8) with screws.

(G) Effects Since the present invention is constructed as described above, hot air escapes upward, and temperature rise near the printed circuit board is prevented.
This can prevent performance deterioration or deterioration of electronic components due to heat.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of the electric iron of the present invention, and FIG. 2 is a rear perspective view of the same. (13 (13... rising rib, ■... printed circuit board,
West...interval, (b)...gap. Applicant Sanyo Electric Co., Ltd. and one other agent Patent attorney Shizuka Sano Fumi Kuha

Claims (1)

[Claims] (1) A hollow handle body having a grip portion is provided upright on the upper surface of the base on which the heater is arranged, and the handle body extends vertically within the hollow rear surface of the handle body and inside the handle body. A pair of rising ribs are formed with a gap between them and the wall, and a printed circuit board on which an electronic component for controlling energization of the electrical components such as the heater is arranged is placed on the riser ribs with a gap between the rear plate of the handle body and the printed circuit board. An electric iron characterized by the fact that it is attached to the iron.