JPS63281384A - High frequency heating device - Google Patents

Abstract

PURPOSE:To provide easy-to-see indication of the time and display the residual time even under operation by forming a dial from mold resin having light penetrating property, and by furnishing an electric lamp in such a manner as facing the dial and the light penetrating part of air guide. CONSTITUTION:A light penetrating part 25 is furnished at an air guide 24, which is to lead the wind sent by a blower into a heating chamber 11 from a magnetron, and another light penetrating part 31 is provided at a control panel facing a dial 28 for indication of the time. This dial 28 is made of a substance having light penetrating property such as synthetic resin or glass, and an electric lamp 13 is furnished in such a manner as mating with the light penetrating part 25 and dial 28. Thereby the light from the lamp 13 is allowed to illuminate the object to be cooked in the heating chamber through an air suction hole 12 of heating chamber and also the dial 28 having light penetrative property for indication of the time, that passes through the light penetrating part of the control panel and serves for seeing. According to this arrangement, the set cooking time is indicated in such a manner as easy to check even in case the place the high frequency heating device is installed is dark, and thereby the residual time can be checked easily under operation.

Description

DETAILED DESCRIPTION OF THE INVENTION 2 to 7' Field of Industrial Application The present invention relates to a structure for illuminating a heating chamber in a high-frequency heating device and a dial for displaying the time of a timer.

Conventional technology As shown in Fig. 4, a conventional high-frequency heating device has a propeller fan 2 and an electric motor 3 for cooling attached to the back side 1 of the main body case, and air is drawn in from the outside through an intake port 4 provided on the back side 1 of the main body case. It cooled electric components such as a magnetron 5 for generating high-frequency waves and a high-voltage transformer 6 to be supplied to the heating chamber 11.

In addition, the wind that cools the magnetron 5 is guided by an air guide 1o, and is directed to a heating chamber intake port 1 provided on the right side of the heating chamber 11.
Enter 2. A light bulb 13 for illuminating the food to be cooked is mounted inside the air guide 10 with a screw 14.

Further, as shown in FIGS. 5 and 6, a timer 16 for setting the cooking time is attached to the operation panel 15, and a dial 1 that displays the timer of the timer 16 is attached to the operation panel 15.
7 is fixed to the shaft 3 base/base 18 of the timer 16.

Problems to be Solved by the Invention However, although it is possible to illuminate the food to be cooked in the heating chamber 11 with such an arrangement of the light bulbs 13, the illumination of the dial 17 of the operation panel 160 and timer device operated by the user is not possible. Therefore, when the place where the high-frequency heating device is installed is dark, it is difficult to see the set time even if you turn the dial 17 that displays the time limit to set the cooking time, and it is also difficult to see the remaining time even when the high-frequency heating device is in operation. be. For this reason, conventionally, as shown in FIG.
An illumination section 19 that does not transmit high-frequency radio waves but transmits light is provided, and the illumination section 19 and the operation panel 2
The light bulb 2 is placed oppositely to both of the display cover 21 provided on the o.
There is a high-frequency heating device that is provided with a light bulb 22 and illuminates the inside of the heating chamber 11 through the illumination section 19, and also causes the display cover 21 to emit light to indicate the operating state. (
(Japanese Utility Model Publication No. 48-5077) However, in this method, only the light bulb 22 is used to
It only illuminates the inside of the heating chamber 11 through the lamp and causes the display cover 21 to emit light to display the operating status, and the dial of the timer of the operation knob 20 operated by the user cannot be illuminated. When the high-frequency heating device is installed in a dark place, the problem remains that it is difficult to see the set time even when turning the dial that displays the time limit to set the cooking time, and it is also difficult to see the remaining time even when the device is in operation.

The present invention solves these conventional problems, and provides a high-frequency heating device with a simple configuration and excellent operability that can illuminate the heating chamber and the dial that displays the time limit of the timer. It is something.

Means for Solving the Problems The high-frequency heating device of the present invention includes a heating chamber for storing food to be cooked, a high-frequency generator for generating high-frequency waves into the heating chamber, and a magnetron constituting the high-frequency generator. a blower for cooling the electrical parts included; an air guide for guiding wind from the blower from the magnetron into the heating chamber; an operation panel to which a cooking time timer is attached; and a dial for displaying the timer. A heating chamber intake hole that is not transparent to high-frequency radio waves but transmits light is provided on the side of the chamber, a light-transmitting part is provided in the air guide, and the operation knob opposite to the dial that displays the time limit is also provided with light. A transparent part is provided, the dial is made of light-transparent synthetic resin or glass, and a light bulb is provided opposite the light-transmissive part of the air guide and the dial.
The heating chamber and the dial displaying the time limit are illuminated.

Function: The high-frequency heating device of the present invention includes a light-transmitting portion in the air guide that guides air from the blower from the magnetron constituting the high-frequency generator into the heating chamber, and also includes a light-transmitting portion in the operation panel facing the dial that displays the time limit. In addition, the dial is made of light-transparent synthetic resin, glass, etc., and a light bulb is placed opposite the light-transmitting part of the air guide and the dial. 6. By illuminating the food to be cooked in the heating chamber through the heating chamber, illuminating the light-transmitting dial that displays the time limit, and displaying the time limit on the dial through the light-transmitting part of the operation panel, the high-frequency heating device Even when the place where the cooking time is installed is dark, the time limit display for setting the cooking time is easy to see, and the remaining time is easy to see even during operation.

EXAMPLE Hereinafter, a high frequency heating device according to an example of the present invention will be explained with reference to the drawings. As shown in Figure 1, the back of the main body case 1
A propeller fan 2 for cooling and an electric motor 3 are attached to the main unit, and air is sucked in from the outside through an intake port 4 provided on the back side of the main body case, and a magnetron 5 for generating high frequency, a high voltage transformer 6, etc. are supplied to the heating chamber 11. cooling electrical components.

The air that cools the T & magnetron 5 is guided by an air guide 23 to the heating chamber intake hole 1 provided on the right side of the heating chamber 11.
Enter 2. Air guide opening holes 26 are provided in the air guide wall surface 24 to transmit light.

7, and as shown in FIGS. 2 and 3, the operation panel 26
A timer 27 for setting the cooking time is attached to the holder, and a dial 28 displaying the timer of the timer 27 is fixed to a shaft 29 of the timer 27. The dial 28 is made of a molded resin that is transparent to light.
The numbers indicating the time limit are printed in white with non-light-transparent paint.

The operation panel 26 facing the dial 28 is also provided with an operation panel aperture 3o for transmitting light. A resin plate 31 printed with a non-light-transparent paint or the like is attached. Then, the light bulb 13 is placed opposite to the air guide opening 25 and the dial 28.
is attached to the upper surface of the air guide 23 with a screw 14.

This light bulb 13 is electrically wired so that it lights up when a timer is activated and the high-frequency heating device is energized.

In this way, when the timer is activated, the light beam of the light bulb 13 illuminates the food to be cooked in the heating chamber 11 through the air guide opening 26.

In addition, the dial 28, which is made of light-transparent synthetic resin and has white numbers representing the time limit printed with non-light-transparent paint, is also illuminated, so the number representing the time limit shines, and the operation panel facing the dial 28 is illuminated. A resin plate 31 is attached to the opening 30, which is made of a light-transparent synthetic resin and has a power-off indicator printed with a non-light-transparent paint or the like, so that the cooking time limit can be known.

Furthermore, the operation panel opening hole 3 facing the dial 28
If o is made of a light-transmitting synthetic resin and is provided with a magnifying mechanism such as a lens, the numbers representing the time period on the dial can be enlarged, making it easier for the user to see.

Note that air guide openings 25 were provided in the air guide wall surface 24 to transmit light; however, the air guide openings 25
The air guide 23 is made of a synthetic resin with optical transparency instead of
It goes without saying that the same effect can be obtained by forming the entire structure or by blocking the air guide opening 26 with a light-transmissive synthetic resin, glass, etc., as long as light is transmitted therethrough.

Page 9/ Effects of the Invention As described above, the high frequency heating device of the present invention has the following effects.

■ A light-transmitting part is provided in the air guide that guides the air blown by an electric motor with a propeller fan from the magnetron that makes up the high-frequency generator to the heating chamber, and a light-transmitting part is also provided in the operation panel opposite to the dial that displays the time limit. It is made of a molded resin that is transparent to light, and a light bulb is placed opposite the light-transmitting part of the air guide and the dial, so that the light from the bulb passes through the air intake hole of the heating chamber and hits the food to be cooked in the heating chamber. By illuminating the dial made of a molded resin with light transmittance and displaying the time limit, the time limit can be displayed through the light transmitting part of the operation panel, when the high frequency heating device is installed in a dark place. However, the time limit display for setting the cooking time is easy to see.
It also makes it easy to understand the remaining time during operation.

■ The light from the light bulb passes through the air intake hole of the heating chamber into the heating chamber 10'\
The high-frequency heating device The operating status of the machine is notified to the user through a dual illumination display, increasing safety.

■ An air guide opening is provided as a light transmitting part in the air guide that guides air from the magnetron that constitutes the high frequency generator to the heating chamber by an electric motor with a propeller fan, and a light bulb is provided so as to be opposite to the air guide opening and the dial. As a result, the light bulb is exposed to wind from an electric motor with a propeller fan, which cools the light bulb, extending its lifespan and increasing its reliability.

■ By providing an air guide opening hole as a light transmitting part in the air guide that guides air from the magnetron that makes up the high frequency generator to the heating chamber by a motor with a propeller fan, the exhaust resistance of the air guide that guides air from the magnetron to the heating chamber is reduced. It is smaller and the cooling efficiency of the magnetron is 11 ba.

Since the high-voltage transformer that makes up the high-frequency generator can be made smaller, the high-frequency heating device can be made smaller.

It became possible to reduce the weight.

■ By using a single light bulb to both illuminate the food to be cooked in the heating chamber and display the time limit on the dial, the number of electrical components and processing steps can be reduced, which is another advantage.

■ If the operation panel aperture facing the dial is made of light-transmitting synthetic resin and is equipped with a magnifying mechanism such as a lens, the number representing the time limit on the dial can be enlarged, making it easier for the user to see and use. has improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of a high-frequency heating device according to an embodiment of the present invention, Fig. 2 is a front view of the operating section, Fig. 3 is a schematic sectional view of the operating section, and Fig. 4 is a conventional high-frequency heating device. FIG. 5 is a schematic front view of the operating section, FIG. 6 is a sectional view of the operating section, and FIG. 7 is a sectional view of another conventional example. 11...Heating chamber, 12...Heating chamber intake hole,
13...Light bulb, 24...Air guide wall, 25...Air guide opening hole, 26...
Operation panel 27...Timer, 28...
...Dial, 3o...Operation panel opening hole, 31
...Resin plate. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure QC---4 Arrogant Ward 1'Fl (Book Hano 3l---fn Temporary Figure 3 f3 List Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] a heating chamber for storing food to be cooked; a high-frequency generator for generating high-frequency waves into the heating chamber; a blower for cooling electric components including a magnetron constituting the high-frequency generator; and a blower from the magnetron into the heating chamber. The heating chamber is equipped with an air guide that guides the air, an operation panel to which a cooking time timer is attached, and a dial that displays the timer of the timer. A heating chamber intake hole is provided for the heating chamber, a light transmitting part is provided in the air guide, a light transmitting part is also provided in the operation panel facing the dial that displays the time limit, the dial is formed of a light transmitting member, and the air guide is provided with a light transmitting part. A high-frequency heating device having a structure in which a light bulb is provided so as to be opposite to the light transmission part and the dial, and the interior of the heating chamber and the dial displaying the time are illuminated.