KR20000051276A - Microwave oven having a control panel - Google Patents

Abstract

PURPOSE: A microwave oven with manipulating panel is provided to allow an indicating plate attached on a display plate to be replaced according to a type of a model, so that manufacturing cost can be reduced. CONSTITUTION: A microwave oven with manipulating panel includes a display plate(30) having a segment section(37) for displaying a cooking time and a plurality of light emitting diodes(LEDs)(36); a printed circuit board(PCB)(35) to which the display plate(30) is attached; and a manipulating panel(25) having a panel casing(28) which is provided with a display window(29) through which the display plate(30) is seen, in which the PCB(35) is accommodated. The microwave oven is characterized by comprising an indicating plate(40) mounted on the display plate(30), in which icons indicating the state of operation are provided on a position corresponding to the LED(36).

Description

Microwave oven with control panel {MICROWAVE OVEN HAVING A CONTROL PANEL}

The present invention relates to a microwave oven having an operation panel, and more particularly, to a microwave oven having an operation panel compatible with the specification.

As illustrated in FIG. 1, the microwave oven includes an inner casing 7 and an outer casing 3 coupled to the outside of the inner casing 7 to form an exterior. The inner casing 7 is formed with a square cylindrical cooking chamber 2 for accommodating food and cooking, and a component chamber 10 containing a plurality of device parts for microwave operation.

The cooking chamber 2 is formed in the left region of the inner casing 7, and the tray 17 in which food is placed is accommodated in the cooking chamber 2. In the component chamber 10 formed at one side of the cooking chamber 2, an HVT 11 for generating a high voltage in response to the supply of power, an HVC 12 for charging the high voltage from the HVT 11, and an HVC ( The magnetron 15, which generates electromagnetic waves in response to the voltage supply from 12) and supplies them into the cooking chamber 2, is housed.

On the other hand, the front of the cooking chamber 2 is formed with a window for viewing the inside, the door 5 for opening and closing the opening of the cooking chamber is installed, the front of the component chamber 10 to operate the microwave oven by an external operation An operation panel 25 in which a plurality of operation buttons 26 are formed is provided. The door 5 and the operation panel 25 are arranged in parallel to form a front surface of the microwave oven.

As shown in FIG. 4, the operation panel 25 has a PCB substrate 85 and a panel casing 78 which accommodates the PCB substrate 85 and is attached to the front of the component chamber 10, and the PCB substrate. In the upper region of 85, a display panel 80 for displaying the operation state is attached. The display panel 80 is provided with a plurality of leads 81 for receiving an electrical signal, and a segment 87 for indicating cooking time is formed in four spaces. In accordance with the model specification, a plurality of icons 86 representing driving states are formed around the segment 87.

When the icon 86 is formed on the display panel 80, the icon is formed using the LED or the VFD. In the case of VFD, the unit price is expensive and is used only for high-end specifications. However, in the case of forming and using the icon 86 shape in the LED, there is a problem in that the shape of the icon 86 applied to each model is different, so that a mold must be manufactured every time a new model is released.

Accordingly, it is an object of the present invention to provide a microwave oven having an operation panel that allows an icon of a display panel to be easily displayed.

1 is an exploded perspective view of a microwave oven,

2 is an exploded perspective view of a microwave oven operating panel according to the present invention;

3 is a plan view of the display unit of FIG. 2;

4 is an exploded perspective view of a conventional microwave operation panel.

<Description of the symbols for the main parts of the drawings>

25: operation panel 28: panel casing

29: display window 30: display panel

31: Lead 35: PCB Board

36: LED 37: segment

40: display plate 45: dark

46: icon

The above object is, according to the present invention, a display unit having a segment portion for displaying the cooking time, and a plurality of LEDs for displaying the operating state; A PCB substrate having the display plate attached thereto; In a microwave oven having an operation panel having a display casing through which the display panel is projected and having a panel casing for accommodating the PCB, an icon attached to the display panel and displaying an operation state at a position corresponding to the LED is provided. It is achieved by a microwave oven having an operation panel, characterized in that it comprises a formed display panel.

Here, it is preferable that the LED is formed in the peripheral region of the segment.

The display panel may include a dark portion through which light is blocked along a circumferential region, and the icon may be transparently formed so that light passes through the dark portion corresponding to the LED to display an icon according to the lighting of the LED.

Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in FIG. 2, the operation panel has a panel casing 28 attached to the front of the component chamber and a PCB substrate 35 housed in the panel casing 28, and a plurality of panel casings 28 are provided on the front surface of the panel casing 28. Membrane panel (not shown) formed with the operation buttons is attached, and the display panel 30 for displaying the operation state is attached to the upper region of the PCB substrate 35. In addition, a display window 29 corresponding to the display panel 30 is formed in the upper region of the panel casing 28 so that the display panel 30 is exposed to the outside.

A plurality of leads 31 are attached to the rear of the display panel 30 to receive an electrical signal, and are electrically connected to the PCB board 35 by the leads 31. In addition, a segment 37 for indicating cooking time is formed in four spaces on the front surface of the display panel 30, and a plurality of LEDs 36 are formed around the segment 37, and the segment 37 is formed. And LED 36 are connected to leads 31, respectively, and blink in accordance with an electrical signal from the PCB substrate 35.

The display panel 40 formed of a film is attached to the front of the display panel 30. The display panel 40 is formed with a black part coated with black to prevent light transmission along the circumferential area, and the central area is formed to be transparent so as to transmit the segment 37. In addition, a plurality of icons 46 representing an operation state of the microwave oven are formed in the arm part 45, and the icons 46 are formed to be transparent to allow light to pass therethrough.

When the display panel 40 is attached to the display panel 30 having the segment 37 and the LED 36 formed thereon, as shown in FIG. 3, the segment 37 is positioned in the central region of the display panel 40. Each LED 36 is located behind each icon 46 of the display panel 40. Here, when the LED 36 is not lit, it is hidden by the arm 45 of the display panel 40 and does not appear to the outside.

When power is applied to the microwave oven, the segment 37 of the display panel 30 is turned on. When the cooking method and time are selected by the operation of the operation panel, and when cooking is started, the icon corresponding to the selected cooking state 46 LED 36 located behind the lamp is lit. Then, light passes through the icon 46 corresponding to the cooking state to be visualized. For example, when automatic cooking is selected, the icon 46 called 'AUTO' is visualized.

In this way, the display panel 30 is formed with a plurality of LEDs 36, and by attaching the display panel 40 having the icon 46 formed in front of the display panel 30, the display panel 30 can be easily produced. have. When the new model is released, the shape of the icon 46 of the display panel 40 may be changed to another shape.

Therefore, according to the model specification, since only the display panel 40 attached to the display panel 30 may be used, it is possible to prevent an increase in the cost, which is caused by molding the LED 36.

As described above, according to the present invention, there is provided a microwave oven having an operation panel that can reduce the cost.

Claims (3)

A display panel having a segment portion for displaying a cooking time and a plurality of LEDs for displaying an operating state; A PCB substrate having the display plate attached thereto; In a microwave oven having an operation panel having a display casing through which the display plate is projected, the panel casing is accommodated, And a display panel attached to the display panel, the display panel having an icon indicating an operation state at a position corresponding to the LED. The method of claim 1, And the LED is formed in the circumferential region of the segment. The method of claim 1, The display panel may include a dark portion for blocking light along a circumferential region, and the icon may be transparently formed so that light passes through the dark portion corresponding to the LED.