KR950010003Y1 - Room lamp of electronic range - Google Patents

Abstract

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Description

Microwave light driving circuit

1 is a high internal light driving circuit diagram of the present invention.

2a to c are operation circuit diagrams for explaining the operating state of the present design circuit.

* Explanation of symbols for main parts of the drawings

LS / W: Lamp switch S ₁ , S ₂ : Door switch

T S / W: Timer switch WL, RL: Incandescent lamp

The present invention relates to a high-light lamp driving circuit of a microwave oven, in particular, by connecting two high-light lamps having different colors in parallel between a plurality of switches to create a beautiful atmosphere during cooking and at the same time when lighting the high light It relates to a high-light lamp driving circuit of a microwave oven to easily recognize the open state of the door by the color change.

In general, the interior light of the microwave oven reveals the interior of the oven in consideration of the confirmation of the cooking status and usability when entering and exiting the food.The door, as invented in Japanese Patent Application No. 2-4104, filed January 11, 1990 Invention of Japanese Patent Application Laid-Open No. 63-282426, filed Nov. 18, 1988, applies an oven lamp by short-circuiting the timer switch when the timer control unit is operated. These are illuminated.

In recent years, in addition to the above-mentioned purposes, expensive quartz tube lamps are used to illuminate the interior, as well as to create a more colorful atmosphere using the color of the lamp.

However, as described above, the quartz tube lamps used to change the atmosphere inside the furnace to color are much more expensive than the general incandescent lamps in terms of their price, and thus, the production cost of the microwave oven has increased.

In addition, when a general incandescent lamp is used as a lamp, it is inferior in color and cannot create a beautiful appearance.In general, a single incandescent lamp is used. There was a problem that distinction during use was very difficult.

For example, Japanese Patent Application No. 2-4104, filed on January 11, 1990, is designed to operate a microwave oven or heat food because the lighting lamp lit by the door's opening operation illuminates the operation panel. If the interior lamp is turned on when the door is opened, it causes consumer anxiety that the microwave oven is being driven even when the door is opened, and Japanese Unexamined Patent Application No. 63-282426, filed November 18, 1988, operates the timer control unit. Since the timer switch is energized by the short circuit of the timer switch and the timer scale is illuminated, when the interior lamp was turned on only during use, the customer was very nervous because the interior lamp was turned on when the door was opened or the food was checked. .

The present invention has been devised to solve such a conventional problem, as well as the appearance of a beautiful atmosphere, and further illuminates the interior, making it easy to check the contents, and also by changing the color of the lamp according to the use of the microwave, The purpose of the present invention is to provide a microwave internal driving light circuit that can greatly ease anxiety and increase usability.

The above object can be achieved by connecting two incandescent lamps having different colors, which are half the rated capacity of the existing interior lamp, between two door switches, lamp switches, and timer switches that interlock with each other.

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

In the high-light lamp driving circuit of the present invention, as shown in FIG. ₁ , the fixed terminal A ₁ of the door switch S ₁ having the movable terminal C ₁ connected to one side of the power supply is configured with a timer switch TS / W. A lamp in which one end of the incandescent lamp WL and the movable terminal C ₃ of the lamp switch LS / W are in contact with each other, and the fixed terminal B ₃ is connected to the fixed terminal B ₁ of the door switch S ₁ . The fixed terminal A ₃ of the switch LS / W is in contact with the red incandescent lamp RL and one side of the load 1, and the door switch S _{2 with the} movable terminal C ₂ connected to the other side of the power supply. The fixed terminals A ₂ and B ₂ are obtained by being in common with the other ends of the incandescent lamps WL and RL and the load 1.

The operation and effects of the present invention constructed as described above will be described with reference to FIGS. 1 and 2a to c.

First, when the door is closed and the timer switch TS / W is "on" and the microwave oven is operating, the movable terminals C ₁ and C ₂ of the door switches S ₁ and S ₂ are respectively fixed terminals ( A ₁ , A ₂ ) and the movable terminal C ₃ of the lamp switch LS / W are connected to the fixed terminal A ₃ , so that a connection loop as shown in FIG. 1 is formed and two incandescent lamps WL, Since RL) is turned on in parallel with each other, the brightness in the refrigerator is increased and the red color makes the food look fresher.

In this state, when the timer switch TS / W is "off" in this state, the connection circuit as shown in FIG. 2a is formed, and thus the power voltage applied to the two incandescent lamps WL and RL is cut off, and thus the incandescent lamp WL, RL) is turned off.

Therefore, the user can easily understand that the microwave is stopped by looking at the unlit state of the incandescent lamps (WL, RL).

In addition, if the door is opened while cooking is performed while the timer switch (TS / W) is in the "on" state, the operation of the door switch (S ₁ , S ₂ ) and the lamp switch (LS / W) is performed. Since (C ₁ -C ₃ ) are connected to the fixed terminals (B ₁ -B ₃ ), respectively, it forms a loop as shown in FIG. 2B so that only the white incandescent lamp (WL) is turned on so that the user can easily recognize the open state of the door. You can do it.

On the other hand, even if the timer switch (TS / W) is "off" even when the door is opened as described above, only the incandescent lamp (WL) is lit as shown in 2c, so that the entry and exit of the food can be performed smoothly through the illumination. Usability of the stove is improved.

As described above, according to the present proposal, while the microwave oven is operating normally, incandescent lamps of different colors with a rated capacity of half the size of the existing lamps are turned on, thereby improving the freshness of the foods being cooked. The function of warning is generated at the same time, and the brightness of the lamp and the life of the lamp can be increased, so that the reliability of the product is further improved, and the different colors of light are generated in the lamp due to the opening and closing of the door. It is a useful design that can give a sense of beauty.

Claims (1)

In constructing a high-light lamp driving circuit of the microwave oven, the fixed terminal (A ₁ ) of the door switch (S ₁ ) connected to the movable terminal (C ₁ ) to one terminal of the power source is incandescent lamp through the timer switch (TS / W) connected to the movable terminal (C ₃₎ of the one end and gongjeop lamp switch (LS / W) of (WL), and a fixed terminal (B ₁₎ the fixed terminal (B ₃₎ in the door switch (S ₁₎ gongjeop The fixed terminal of the lamp switch (LS / W) is connected to one side of the incandescent lamp (RL), and the fixed terminal (A ₂ , B ₂ ) of the door switch (S ₂ ) in which the movable terminal (C ₂ ) is connected to the other terminal of the power source. ) Is the high-light lamp driving circuit of the microwave oven, characterized in that the incandescent bulbs (WL, RL) are in common with each other.